PSoC(R) 3: CY8C34 Family Datasheet (R) Programmable System-on-Chip (PSoC ) General Description PSoC(R) 3 is a true programmable embedded system-on-chip, integrating configurable analog and digital peripherals, memory, and a microcontroller on a single chip. The PSoC 3 architecture boosts performance through: 8051 core plus DMA controller at up to 50 MHz Ultra low power with industry's widest voltage range Programmable digital and analog peripherals enable custom functions Flexible routing of any analog or digital peripheral function to any pin PSoC devices employ a highly configurable system-on-chip architecture for embedded control design. They integrate configurable analog and digital circuits, controlled by an on-chip microcontroller. A single PSoC device can integrate as many as 100 digital and analog peripheral functions, reducing design time, board space, power consumption, and system cost while improving system quality. Features Operating characteristics Analog peripherals Voltage range: 1.71 to 5.5 V, up to six power domains [1] Temperature range (ambient) -40 to 85 C DC to 50-MHz operation Power modes * Active mode 1.2 mA at 6 MHz, and 12 mA at 48 MHz * 1-A sleep mode * 200-nA hibernate mode with RAM retention Boost regulator from 0.5-V input up to 5-V output Configurable 8- to 12-bit delta-sigma ADC Two 8-bit DACs Four comparators Two opamps Two programmable analog blocks, to create: * Programmable gain amplifier (PGA) * Transimpedance amplifier (TIA) * Mixer * Sample and hold circuit (R) CapSense support, up to 62 sensors 1.024 V 1% internal voltage reference Performance 8-bit 8051 CPU, 32 interrupt inputs 24-channel direct memory access (DMA) controller Versatile I/O system Memories 29 to 72 I/O pins - up to 62 general-purpose I/Os (GPIOs) Up to eight performance I/O (SIO) pins * 25 mA current sink * Programmable input threshold and output high voltages * Can act as a general-purpose comparator * Hot swap capability and overvoltage tolerance Two USBIO pins that can be used as GPIOs Route any digital or analog peripheral to any GPIO LCD direct drive from any GPIO, up to 46 x 16 segments CapSense support from any GPIO 1.2-V to 5.5-V interface voltages, up to four power domains Up to 64 KB program flash, with cache and security features Up to 8 KB additional flash for error correcting code (ECC) Up to 8 KB RAM Up to 2 KB EEPROM Digital peripherals Four 16-bit timer, counter, and PWM (TCPWM) blocks I2C, 1 Mbps bus speed USB 2.0 certified Full-Speed (FS) 12 Mbps peripheral interface (TID#40770053) using internal oscillator[2] Full CAN 2.0b, 16 Rx, 8 Tx buffers 16 to 24 universal digital blocks (UDB), programmable to create any number of functions: * 8-, 16-, 24-, and 32-bit timers, counters, and PWMs * I2C, UART, SPI, I2S, LIN 2.0 interfaces * Cyclic redundancy check (CRC) * Pseudo random sequence (PRS) generators * Quadrature decoders * Gate-level logic functions Programming and debug JTAG (4-wire), serial wire debug (SWD) (2-wire), and single wire viewer (SWV) interfaces 2 Bootloader programming through I C, SPI, UART, USB, and other interfaces Package options: 48-pin SSOP, 48-pin QFN, 68-pin QFN, and 100-pin TQFP Development support with free PSoC CreatorTM tool Programmable clocking 3- to 62-MHz internal oscillator, 2% accuracy at 3 MHz 4- to 25-MHz external crystal oscillator Internal PLL clock generation up to 50 MHz Low-power internal oscillator at 1, 33, and 100 kHz 32.768-kHz external watch crystal oscillator 12 clock dividers routable to any peripheral or I/O Schematic and firmware design support Over 100 PSoC ComponentsTM integrate multiple ICs and system interfaces into one PSoC. Components are free embedded ICs represented by icons. Drag and drop component icons to design systems in PSoC Creator. Includes free Keil 8051 compiler Supports device programming and debugging Notes 1. The maximum storage temperature is 150 C in compliance with JEDEC Standard JESD22-A103, High Temperature Storage Life. 2. This feature on select devices only. See Ordering Information on page 121 for details. Cypress Semiconductor Corporation Document Number: 001-53304 Rev. *Z * 198 Champion Court * San Jose, CA 95134-1709 * 408-943-2600 Revised June 9, 2017 PSoC(R) 3: CY8C34 Family Datasheet More Information Cypress provides a wealth of data at www.cypress.com to help you to select the right PSoC device for your design, and to help you to quickly and effectively integrate the device into your design. For a comprehensive list of resources, see the knowledge base article KBA86521, How to Design with PSoC 3, PSoC 4, and PSoC 5LP. Following is an abbreviated list for PSoC 3: Overview: PSoC Portfolio, PSoC Roadmap Product Selectors: PSoC 1, PSoC 3, PSoC 4, PSoC 5LP In addition, PSoC Creator includes a device selection tool. Application notes: Cypress offers a large number of PSoC application notes and code examples covering a broad range of topics, from basic to advanced level. Recommended application notes for getting started with PSoC 3 are: AN54181: Getting Started With PSoC 3 AN61290: Hardware Design Considerations AN57821: Mixed Signal Circuit Board Layout AN58304: Pin Selection for Analog Designs AN81623: Digital Design Best Practices AN73854: Introduction To Bootloaders Development Kits: CY8CKIT-030 is designed for analog performance, for developing high-precision analog, low-power, and low-voltage applications. CY8CKIT-001 provides a common development platform for any one of the PSoC 1, PSoC 3, PSoC 4, or PSoC 5LP families of devices. The MiniProg3 device provides an interface for flash programming and debug. Technical Reference Manuals (TRM) Architecture TRM Registers TRM Programming Specification PSoC Creator PSoC Creator is a free Windows-based Integrated Design Environment (IDE). It enables concurrent hardware and firmware design of PSoC 3, PSoC 4, and PSoC 5LP based systems. Create designs using classic, familiar schematic capture supported by over 100 pre-verified, production-ready PSoC Components; see the list of component datasheets. With PSoC Creator, you can: 1. Drag and drop component icons to build your hardware 3. Configure components using the configuration tools system design in the main design workspace 4. Explore the library of 100+ components 2. Codesign your application firmware with the PSoC hardware, 5. Review component datasheets using the PSoC Creator IDE C compiler Figure 1. Multiple-Sensor Example Project in PSoC Creator Document Number: 001-53304 Rev. *Z Page 2 of 137 PSoC(R) 3: CY8C34 Family Datasheet Contents 1. Architectural Overview ..................................................... 4 2. Pinouts ............................................................................... 6 3. Pin Descriptions .............................................................. 11 4. CPU ................................................................................... 12 4.1 8051 CPU ................................................................. 12 4.2 Addressing Modes .................................................... 12 4.3 Instruction Set .......................................................... 13 4.4 DMA and PHUB ....................................................... 17 4.5 Interrupt Controller ................................................... 18 5. Memory ............................................................................. 22 5.1 Static RAM ............................................................... 22 5.2 Flash Program Memory ............................................ 22 5.3 Flash Security ........................................................... 22 5.4 EEPROM .................................................................. 22 5.5 Nonvolatile Latches (NVLs) ...................................... 23 5.6 External Memory Interface ....................................... 24 5.7 Memory Map ............................................................ 25 6. System Integration .......................................................... 27 6.1 Clocking System ....................................................... 27 6.2 Power System .......................................................... 30 6.3 Reset ........................................................................ 34 6.4 I/O System and Routing ........................................... 36 7. Digital Subsystem ........................................................... 43 7.1 Example Peripherals ................................................ 43 7.2 Universal Digital Block .............................................. 45 7.3 UDB Array Description ............................................. 48 7.4 DSI Routing Interface Description ............................ 49 7.5 CAN .......................................................................... 50 7.6 USB .......................................................................... 52 7.7 Timers, Counters, and PWMs .................................. 53 7.8 I2C ............................................................................ 54 8. Analog Subsystem .......................................................... 56 8.1 Analog Routing ......................................................... 57 8.2 Delta-sigma ADC ...................................................... 59 8.3 Comparators ............................................................. 60 8.4 Opamps .................................................................... 61 8.5 Programmable SC/CT Blocks .................................. 61 8.6 LCD Direct Drive ...................................................... 63 8.7 CapSense ................................................................. 64 8.8 Temp Sensor ............................................................ 64 8.9 DAC .......................................................................... 64 8.10 Up/Down Mixer ....................................................... 64 8.11 Sample and Hold .................................................... 65 Document Number: 001-53304 Rev. *Z 9. Programming, Debug Interfaces, Resources ................ 65 9.1 JTAG Interface ......................................................... 66 9.2 Serial Wire Debug Interface ..................................... 67 9.3 Debug Features ........................................................ 68 9.4 Trace Features ......................................................... 68 9.5 Single Wire Viewer Interface .................................... 68 9.6 Programming Features ............................................. 68 9.7 Device Security ........................................................ 68 10. Development Support ................................................... 69 10.1 Documentation ....................................................... 69 10.2 Online ..................................................................... 69 10.3 Tools ....................................................................... 69 11. Electrical Specifications ............................................... 70 11.1 Absolute Maximum Ratings .................................... 70 11.2 Device Level Specifications .................................... 71 11.3 Power Regulators ................................................... 75 11.4 Inputs and Outputs ................................................. 79 11.5 Analog Peripherals ................................................. 88 11.6 Digital Peripherals ................................................ 105 11.7 Memory ................................................................ 108 11.8 PSoC System Resources ..................................... 114 11.9 Clocking ................................................................ 117 12. Ordering Information ................................................... 121 12.1 Part Numbering Conventions ............................... 122 13. Packaging ..................................................................... 123 14. Acronyms ..................................................................... 126 15. Reference Documents ................................................. 127 16. Document Conventions .............................................. 128 16.1 Units of Measure .................................................. 128 17. Revision History .......................................................... 129 18. Sales, Solutions, and Legal Information ................... 137 Worldwide Sales and Design Support.......................... 137 Products ....................................................................... 137 PSoC(R) Solutions ......................................................... 137 Cypress Developer Community.................................... 137 Technical Support ........................................................ 137 Page 3 of 137 PSoC(R) 3: CY8C34 Family Datasheet 1. Architectural Overview Introducing the CY8C34 family of ultra low-power, flash Programmable System-on-Chip (PSoC(R)) devices, part of a scalable 8-bit PSoC 3 and 32-bit PSoC 5 platform. The CY8C34 family provides configurable blocks of analog, digital, and interconnect circuitry around a CPU subsystem. The combination of a CPU with a flexible analog subsystem, digital subsystem, routing, and I/O enables a high level of integration in a wide variety of consumer, industrial, and medical applications. Figure 1-1. Simplified Block Diagram Analog Interconnect Quadrature Decoder UDB Sequencer Usage Example for UDB Universal Digital Block Array ( 24 x UDB) 8- Bit Timer UDB UDB UDB 16- Bit PWM UDB UDB UDB UDB UDB UDB UDB UDB 22 UDB UDB UDB UDB Logic UDB FS USB 2.0 4x Timer Counter PWM 12- Bit SPI UDB Master/ Slave UDB UDB 8- Bit Timer UDB 8- Bit SPI I2C Slave UDB I2C CAN 2.0 16- Bit PRS Logic UDB UART UDB USB PHY GPIOs GPIOs IMO Clock Tree 32.768 KHz ( Optional) Digital System System Wide Resources Xtal Osc SIO 4- 25 MHz ( Optional) GPIOs Digital Interconnect 12- Bit PWM RTC Timer System Bus GPIOs EEPROM EMIF SRAM CPU System 8051 or Cortex M3 CPU Interrupt Controller Program Debug & Trace PHUB DMA FLASH ILO Program & Debug GPIOs Memory System WDT and Wake Boundary Scan Clocking System GPIOs SIOs Analog System Power Management System LCD Direct Drive ADC POR and LVD 1.8V LDO SMP 3 per Opamp 2 x SC/ CT Blocks (TIA, PGA, Mixer etc) Temperature Sensor Del Sig ADC + 4x CMP 2 x DAC - GPIOs 1.71 to 5.5V Sleep Power + 2x Opamp - CapSense 0. 5 to 5.5V ( Optional) Figure 1-1 illustrates the major components of the CY8C34 family. They are: 8051 CPU subsystem Nonvolatile subsystem Programming, debug, and test subsystem Inputs and outputs Clocking Power Digital subsystem Document Number: 001-53304 Rev. *Z Analog subsystem PSoC's digital subsystem provides half of its unique configurability. It connects a digital signal from any peripheral to any pin through the digital system interconnect (DSI). It also provides functional flexibility through an array of small, fast, lowpower UDBs. PSoC Creator provides a library of prebuilt and tested standard digital peripherals (UART, SPI, LIN, PRS, CRC, timer, counter, PWM, AND, OR, and so on) that are mapped to the UDB array. You can also easily create a digital circuit using boolean primitives by means of graphical design entry. Each UDB contains programmable array logic (PAL)/PLD functionality, together with a small state machine engine to support a wide variety of peripherals. Page 4 of 137 PSoC(R) 3: CY8C34 Family Datasheet In addition to the flexibility of the UDB array, PSoC also provides configurable digital blocks targeted at specific functions. For the CY8C34 family these blocks can include four 16-bit timer, counter, and PWM blocks; I2C slave, master, and multi-master; Full-Speed USB; and Full CAN 2.0b. For more details on the peripherals see the "Example Peripherals" section on page 43 of this data sheet. For information on UDBs, DSI, and other digital blocks, see the "Digital Subsystem" section on page 43 of this data sheet. PSoC's analog subsystem is the second half of its unique configurability. All analog performance is based on a highly accurate absolute voltage reference with less than 1-percent error over temperature and voltage. The configurable analog subsystem includes: Analog muxes Comparators Voltage references Analog-to-digital converter (ADC) Digital-to-analog converters (DACs) All GPIO pins can route analog signals into and out of the device using the internal analog bus. This allows the device to interface up to 62 discrete analog signals. The heart of the analog subsystem is a fast, accurate, configurable delta-sigma ADC with these features: Less than 100 V offset A gain error of 0.2 percent INL less than 1 LSB DNL less than 1 LSB SINAD better than 66 dB This converter addresses a wide variety of precision analog applications, including some of the most demanding sensors. Two high-speed voltage or current DACs support 8-bit output signals at update rate of 8 Msps in current DAC (IDAC) and 1 Msps in voltage DAC (VDAC). They can be routed out of any GPIO pin. You can create higher resolution voltage PWM DAC outputs using the UDB array. This can be used to create a pulse width modulated (PWM) DAC of up to 10 bits, at up to 48 kHz. The digital DACs in each UDB support PWM, PRS, or delta-sigma algorithms with programmable widths. In addition to the ADC and DACs, the analog subsystem provides multiple: Uncommitted opamps Configurable switched capacitor/continuous time (SC/CT) blocks. These support: Transimpedance amplifiers Programmable gain amplifiers Mixers Other similar analog components See the "Analog Subsystem" section on page 56 of this data sheet for more details. PSoC's 8051 CPU subsystem is built around a single cycle pipelined 8051 8-bit processor running at up to 50 MHz. The CPU subsystem includes a programmable nested vector interrupt controller, DMA controller, and RAM. PSoC's nested vector interrupt controller provides low latency by allowing the CPU to vector directly to the first address of the interrupt service routine, bypassing the jump instruction required by other architectures. The DMA controller enables peripherals to exchange data without CPU involvement. This allows the CPU to run slower (saving power) or use those CPU cycles to improve the performance of firmware algorithms. The single cycle 8051 CPU runs ten times faster than a standard 8051 processor. The processor speed itself is configurable, allowing you to tune active power consumption for specific applications. PSoC's nonvolatile subsystem consists of flash, byte-writeable EEPROM, and nonvolatile configuration options. It provides up to 64 KB of on-chip flash. The CPU can reprogram individual blocks of flash, enabling bootloaders. You can enable an error correcting code (ECC) for high reliability applications. A powerful and flexible protection model secures the user's sensitive information, allowing selective memory block locking for read and write protection. Up to 2 KB of byte-writeable EEPROM is available on-chip to store application data. Additionally, selected configuration options such as boot speed and pin drive mode are stored in nonvolatile memory. This allows settings to activate immediately after power-on reset (POR). The three types of PSoC I/O are extremely flexible. All I/Os have many drive modes that are set at POR. PSoC also provides up to four I/O voltage domains through the VDDIO pins. Every GPIO has analog I/O, LCD drive[3], CapSense[4], flexible interrupt generation, slew rate control, and digital I/O capability. The SIOs on PSoC allow VOH to be set independently of VDDIO when used as outputs. When SIOs are in input mode they are high impedance. This is true even when the device is not powered or when the pin voltage goes above the supply voltage. This makes the SIO ideally suited for use on an I2C bus where the PSoC may not be powered when other devices on the bus are. The SIO pins also have high current sink capability for applications such as LED drives. The programmable input threshold feature of the SIO can be used to make the SIO function as a general purpose analog comparator. For devices with Full-Speed USB the USB physical interface is also provided (USBIO). When not using USB these pins may also be used for limited digital functionality and device programming. All of the features of the PSoC I/Os are covered in detail in the "I/O System and Routing" section on page 36 of this data sheet. The PSoC device incorporates flexible internal clock generators, designed for high stability and factory trimmed for high accuracy. The Internal Main Oscillator (IMO) is the clock base for the system, and has 2-percent accuracy at 3 MHz. The IMO can be configured to run from 3 MHz up to 24 MHz. Multiple clock derivatives can be generated from the main clock frequency to meet application needs. Notes 3. This feature on select devices only. See Ordering Information on page 121 for details. 4. GPIOs with opamp outputs are not recommended for use with CapSense. Document Number: 001-53304 Rev. *Z Page 5 of 137 PSoC(R) 3: CY8C34 Family Datasheet The device provides a PLL to generate clock frequencies up to 50 MHz from the IMO, external crystal, or external reference clock. It also contains a separate, very low-power Internal low-speed oscillator (ILO) for the sleep and watchdog timers. A 32.768-kHz external watch crystal is also supported for use in RTC applications. The clocks, together with programmable clock dividers, provide the flexibility to integrate most timing requirements. The CY8C34 family supports a wide supply operating range from 1.71 V to 5.5 V. This allows operation from regulated supplies such as 1.8 V 5 percent, 2.5 V 10 percent, 3.3 V 10 percent, or 5.0 V 10 percent, or directly from a wide range of battery types. In addition, it provides an integrated high efficiency synchronous boost converter that can power the device from supply voltages as low as 0.5 V. This enables the device to be powered directly from a single battery or solar cell. In addition, you can use the boost converter to generate other voltages required by the device, such as a 3.3-V supply for LCD glass drive. The boost's output is available on the VBOOST pin, allowing other devices in the application to be powered from the PSoC. PSoC supports a wide range of low-power modes. These include a 200-nA hibernate mode with RAM retention and a 1-A sleep mode with RTC. In the second mode the optional 32.768-kHz watch crystal runs continuously and maintains an accurate RTC. Power to all major functional blocks, including the programmable digital and analog peripherals, can be controlled independently by firmware. This allows low-power background processing when some peripherals are not in use. This, in turn, provides a total device current of only 1.2 mA when the CPU is running at 6 MHz, or 0.8 mA running at 3 MHz. The details of the PSoC power modes are covered in the "Power System" section on page 30 of this data sheet. PSoC uses JTAG (4-wire) or SWD (2-wire) interfaces for programming, debug, and test. The 1-wire SWV may also be used for `printf' style debugging. By combining SWD and SWV, you can implement a full debugging interface with just three pins. Using these standard interfaces enables you to debug or program the PSoC with a variety of hardware solutions from Cypress or third party vendors. PSoC supports on-chip break points and 4 KB instruction and data race memory for debug. Details of the programming, test, and debugging interfaces are discussed in the "Programming, Debug Interfaces, Resources" section on page 65 of this data sheet. 2. Pinouts Each VDDIO pin powers a specific set of I/O pins. (The USBIOs are powered from VDDD.) Using the VDDIO pins, a single PSoC can support multiple voltage levels, reducing the need for off-chip level shifters. The black lines drawn on the pinout diagrams in Figure 2-3 through Figure 2-6, as well as Table 2-1, show the pins that are powered by each VDDIO. Each VDDIO may source up to 100 mA total to its associated I/O pins, as shown in Figure 2-1. Figure 2-1. VDDIO Current Limit IDDIO X = 100 mA VDDIO X I/O Pins PSoC Conversely, for the 100-pin and 68-pin devices, the set of I/O pins associated with any VDDIO may sink up to 100 mA total, as shown in Figure 2-2. Figure 2-2. I/O Pins Current Limit Ipins = 100 mA VDDIO X I/O Pins PSoC VSSD For the 48-pin devices, the set of I/O pins associated with VDDIO0 plus VDDIO2 may sink up to 100 mA total. The set of I/O pins associated with VDDIO1 plus VDDIO3 may sink up to a total of 100 mA. Document Number: 001-53304 Rev. *Z Page 6 of 137 PSoC(R) 3: CY8C34 Family Datasheet Figure 2-3. 48-pin SSOP Part Pinout (SIO) P12[2] (SIO) P12[3] (OPAMP2OUT, GPIO) P0[0] (OPAMP0OUT, GPIO) P0[1] (OPAMP0+, GPIO) P0[2] (OPAMP0-/EXTREF0, GPIO) P0[3] VDDIO0 (OPAMP2+, GPIO) P0[4] (OPAMP2-, GPIO) P0[5] (IDAC0, GPIO) P0[6] (IDAC2, GPIO) P0[7] VCCD VSSD VDDD (GPIO) P2[3] (GPIO) P2[4] VDDIO2 (GPIO) P2[5] (GPIO) P2[6] (GPIO) P2[7] VSSB IND VBOOST VBAT 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 48 47 Lines show 46 VDDIO to I/O 45 supply 44 association 43 42 41 40 39 38 SSOP 37 36 35 34 33 32 31 30 29 28 27 26 25 VDDA VSSA VCCA P15[3] (GPIO, KHZ XTAL: XI) P15[2] (GPIO, KHZ XTAL: XO) P12[1] (SIO, I2C1: SDA) P12[0] (SIO, I2C1: SCL) VDDIO3 P15[1] (GPIO, MHZ XTAL: XI) P15[0] (GPIO, MHZ XTAL: XO) VCCD VSSD VDDD [5] P15[7] (USBIO, D-, SWDCK) [5] P15[6] (USBIO, D+, SWDIO) P1[7] (GPIO) P1[6] (GPIO) VDDIO1 P1[5] (GPIO, NTRST) P1[4] (GPIO, TDI) P1[3] (GPIO, TDO, SWV) P1[2] (GPIO, CONFIGURABLE XRES) P1[1] (GPIO, TCK, SWDCK) P1[0] (GPIO, TMS, SWDIO) VDDIO1 (GPIO, Configurable XRES) P1[2] (GPIO, TDO, SWV) P1[3] (GPIO, TDI) P1[4] (GPIO, NTRST) P1[5] 7 8 9 10 11 12 46 45 44 43 42 41 40 39 38 37 Lines show VDDIO to I/O supply association QFN (TOP VIEW ) 36 P0[3] (OPAMP0-/EXTREF0, GPIO) 35 P0[2] (OPAMP0+, GPIO) 34 P0[1] (OPAMP0OUT, GPIO) 33 P0[0] (OPAMP2OUT, GPIO) 32 P12[3] (SIO) 31 P12[2] (SIO) 30 VDDA 29 VSSA 28 VCCA 27 P15[3] (GPIO, KHZ XTAL: XI) 26 P15[2] (GPIO, KHZ XTAL: XO) 25 P12[1] (SIO, I2C1: SDA) 13 14 15 16 17 18 19 20 21 22 23 24 VSSB IND VBOOST VBAT (GPIO, TMS, SWDIO) P1[0] (GPIO, TCK, SWDCK) P1[1] 1 2 3 4 5 6 (GPIO) P1[6] (GPIO) P1[7] [6] (USBIO, D+, SWDIO) P15[6] [6] (USBIO, D-, SWDCK) P15[7] VDDD VSSD VCCD (GPIO, MHZ XTAL: XO) P15[0] (GPIO, MHZ XTAL: XI) P15[1] VDDIO3 (SIO, I2C1: SCL) P12[0] (GPIO) P2[6] (GPIO) P2[7] 48 47 P2[5] (GPIO) VDDIO2 P2[4] (GPIO) P2[3] (GPIO) VDDD VSSD VCCD P0[7] (IDAC2, GPIO) P0[6] (IDAC0, GPIO) P0[5] (OPAMP2-, GPIO) P0[4] (OPAMP2+, GPIO) VDDIO0 Figure 2-4. 48-pin QFN Part Pinout[7] Notes 5. Pins are Do Not Use (DNU) on devices without USB. The pin must be left floating. 6. Pins are Do Not Use (DNU) on devices without USB. The pin must be left floating. 7. The center pad on the QFN package should be connected to digital ground (VSSD) for best mechanical, thermal, and electrical performance. If not connected to ground, it should be electrically floated and not connected to any other signal. For more information, see AN72845, Design Guidelines for QFN Devices. Document Number: 001-53304 Rev. *Z Page 7 of 137 PSoC(R) 3: CY8C34 Family Datasheet 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 P2[5] (GPIO) VDDIO2 P2[4] (GPIO) P2[3] (GPIO) P2[2] (GPIO) P2[1] (GPIO) P2[0] (GPIO) P15[5] (GPOI) P15[4] (GPIO) VDDD VSSD VCCD P0[7] (GPIO, IDAC2) P0[6] (GPIO, IDAC0) P0[5] (GPIO, OPAMP2-) P0[4] (GPIO, OPAMP2+) VDDIO0 Figure 2-5. 68-Pin QFN Part Pinout[9] 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 51 50 Lines show VDDIO to I/O supply association QFN (Top View) 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 P0[3] (GPIO, OPAMP0-/EXTREF0) P0[2] (GPIO, OPAMP0+) P0[1] (GPIO, OPAMP0OUT) P0[0] (GPIO, OPAMP2OUT) P12[3] (SIO) P12[2] (SIO) VSSD VDDA VSSA VCCA P15[3] (GPIO, KHZ XTAL: XI) P15[2] (GPIO, KHZ XTAL: XO) P12[1] (SIO, I2C1: SDA) P12[0] (SIO, 12C1: SCL) P3[7] (GPIO) P3[6] (GPIO) VDDIO3 (GPIO) P1[6] (GPIO) P1[7] (SIO) P12[6] (SIO) P12[7] [8] (USBIO, D+, SWDIO) P15[6] [8] (USBIO, D-, SWDCK) P15[7] VDDD VSSD VCCD (MHZ XTAL: XO, GPIO) P15[0] (MHZ XTAL: XI, GPIO) P15[1] (GPIO) P3[0] (GPIO) P3[1] (EXTREF1, GPIO) P3[2] (GPIO) P3[3] (GPIO) P3[4] (GPIO) P3[5] 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 (GPIO) P2[6] (GPIO) P2[7] (I2C0: SCL, SIO) P12[4] (I2C0: SDA, SIO) P12[5] VSSB IND VBOOST VBAT VSSD XRES (TMS, SWDIO, GPIO) P1[0] (TCK, SWDCK, GPIO) P1[1] (CONFIGURABLE XRES, GPIO) P1[2] (TDO, SWV, GPIO) P1[3] (TDI, GPIO) P1[4] (NTRST, GPIO) P1[5] VDDIO1 Notes 8. Pins are Do Not Use (DNU) on devices without USB. The pin must be left floating. 9. The center pad on the QFN package should be connected to digital ground (VSSD) for best mechanical, thermal, and electrical performance. If not connected to ground, it should be electrically floated and not connected to any other signal. For more information, see AN72845, Design Guidelines for QFN Devices. Document Number: 001-53304 Rev. *Z Page 8 of 137 PSoC(R) 3: CY8C34 Family Datasheet P4[5] (GPIO) P4[4] (GPIO) P4[3] (GPIO) P4[2] (GPIO) P0[7] (GPIO, IDAC2) P0[6] (GPIO, IDAC0) P0[5] (GPIO, OPAMP2-) P0[4] (GPIO, OPAMP2+) 75 74 Lines show VDDIO to I/O supply association TQFP 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 VDDIO0 P0[3] (GPIO, OPAMP0-/EXTREF0) P0[2] (GPIO, OPAMP0+) P0[1] (GPIO, OPAMP0OUT) P0[0] (GPIO, OPAMP2OUT) P4[1] (GPIO) P4[0] (GPIO) P12[3] (SIO) P12[2] (SIO) VSSD VDDA VSSA VCCA NC NC NC NC NC NC P15[3] (GPIO, KHZ XTAL: XI) P15[2] (GPIO, KHZ XTAL: XO) P12[1] (SIO, I2C1: SDA) P12[0] (SIO, I2C1: SCL) P3[7] (GPIO) P3[6] (GPIO) VDDIO1 (GPIO) P1[6] (GPIO) P1[7] (SIO) P12[6] (SIO) P12[7] (GPIO) P5[4] (GPIO) P5[5] (GPIO) P5[6] [10] (GPIO) P5[7] [10] (USBIO, D+, SWDIO) P15[6] (USBIO, D-, SWDCK) P15[7] VDDD VSSD VCCD NC NC (MHZ XTAL: XO, GPIO) P15[0] (MHZ XTAL: XI, GPIO) P15[1] (GPIO) P3[0] (GPIO) P3[1] (EXTREF1, GPIO) P3[2] (GPIO) P3[3] (GPIO) P3[4] (GPIO) P3[5] VDDIO3 (GPIO) P2[5] (GPIO) P2[6] (GPIO) P2[7] (I2C0: SCL, SIO) P12[4] (I2C0: SDA, SIO) P12[5] (GPIO) P6[4] (GPIO) P6[5] (GPIO) P6[6] (GPIO) P6[7] VSSB IND VBOOST VBAT VSSD XRES (GPIO) P5[0] (GPIO) P5[1] (GPIO) P5[2] (GPIO) P5[3] (TMS, SWDIO, GPIO) P1[0] (TCK, SWDCK, GPIO) P1[1] (CONFIGURABLE XRES, GPIO) P1[2] (TDO, SWV, GPIO) P1[3] (TDI, GPIO) P1[4] (NTRST, GPIO) P1[5] 100 99 98 97 96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81 80 79 78 77 76 VDDIO2 P2[4] (GPIO) P2[3] (GPIO) P2[2] (GPIO) P2[1] (GPIO) P2[0] (GPIO) P15[5] (GPIO) P15[4] (GPIO) P6[3] (GPIO) P6[2] (GPIO) P6[1] (GPIO) P6[0] (GPIO) VDDD VSSD VCCD P4[7] (GPIO) P4[6] (GPIO) Figure 2-6. 100-pin TQFP Part Pinout Table 2-1. VDDIO and Port Pin Associations VDDIO Port Pins VDDIO0 P0[7:0], P4[7:0], P12[3:2] VDDIO1 P1[7:0], P5[7:0], P12[7:6] VDDIO2 P2[7:0], P6[7:0], P12[5:4], P15[5:4] VDDIO3 P3[7:0], P12[1:0], P15[3:0] VDDD P15[7:6] (USB D+, D-) Note 10. Pins are Do Not Use (DNU) on devices without USB. The pin must be left floating. Document Number: 001-53304 Rev. *Z Page 9 of 137 PSoC(R) 3: CY8C34 Family Datasheet Figure 2-7 and Figure 2-8 on page 11 show an example schematic and an example PCB layout, for the 100-pin TQFP part, for optimal analog performance on a two-layer board. The two pins labeled VDDD must be connected together. The two pins labeled VCCD must be connected together, with capacitance added, as shown in Figure 2-7 and Power System on page 30. The trace between the two VCCD pins should be as short as possible. The two pins labeled VSSD must be connected together. For information on circuit board layout issues for mixed signals, refer to the application note AN57821 - Mixed Signal Circuit Board Layout Considerations for PSoC(R) 3 and PSoC 5. Figure 2-7. Example Schematic for 100-pin TQFP Part With Power Connections VDDD C1 1uF VDDD VSSD VSSD VDDD 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51 VDDA C8 0.1uF VSSD VSSD VDDA VSSA VCCA C17 1uF VSSA VDDA C9 1uF C10 0.1uF VSSA VDDD C11 0.1uF VCCD VDDD VSSD C12 0.1uF VSSD VDDD VDDIO0 OA0-, REF0, P0[3] OA0+, P0[2] OA0OUT, P0[1] OA2OUT, P0[0] P4[1] P4[0] SIO, P12[3] SIO, P12[2] VSSD VDDA VSSA VCCA NC NC NC NC NC NC KHZXIN, P15[3] KHZXOUT, P15[2] SIO, P12[1] SIO, P12[0] OA3OUT, P3[7] OA1OUT, P3[6] VDDIO1 P1[6] P1[7] P12[6], SIO P12[7], SIO P5[4] P5[5] P5[6] P5[7] P15[6], USB D+ P15[7], USB DVDDD VSSD VCCD NC NC P15[0], MHZXOUT P15[1], MHZXIN P3[0], IDAC1 P3[1], IDAC3 P3[2], OA3-, REF1 P3[3], OA3+ P3[4], OA1P3[5], OA1+ VDDIO3 P2[5] P2[6] P2[7] P12[4], SIO P12[5], SIO P6[4] P6[5] P6[6] P6[7] VSSB IND VBOOST VBAT VSSD XRES P5[0] P5[1] P5[2] P5[3] P1[0], SWIO, TMS P1[1], SWDIO, TCK P1[2] P1[3], SWV, TDO P1[4], TDI P1[5], NTRST 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 VSSD VCCD VSSD VDDIO2 P2[4] P2[3] P2[2] P2[1] P2[0] P15[5] P15[4] P6[3] P6[2] P6[1] P6[0] VDDD VSSD VCCD P4[7] P4[6] P4[5] P4[4] P4[3] P4[2] IDAC2, P0[7] IDAC0, P0[6] OA2-, P0[5] OA2+, P0[4] VSSD VSSD C2 0.1uF 100 99 98 97 96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81 80 79 78 77 76 C6 0.1uF VDDD VDDD 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 VDDD C15 1uF C16 0.1uF VSSD VSSD Note The two VCCD pins must be connected together with as short a trace as possible. A trace under the device is recommended, as shown in Figure 2-8 on page 11. For more information on pad layout, refer to http://www.cypress.com/cad-resources/psoc-3-cad-libraries. Document Number: 001-53304 Rev. *Z Page 10 of 137 PSoC(R) 3: CY8C34 Family Datasheet Figure 2-8. Example PCB Layout for 100-pin TQFP Part for Optimal Analog Performance VSSA VDDD VSSD VDDA VSSA Plane VSSD Plane 3. Pin Descriptions IDAC0, IDAC2 Low resistance output pin for high current DACs (IDAC). OpAmp0out, OpAmp2out High current output of uncommitted opamp[11]. Extref0, Extref1 MHz XTAL: Xo, MHz XTAL: Xi 4- to 25-MHz crystal oscillator pin. nTRST Optional JTAG test reset programming and debug port connection to reset the JTAG connection. SIO Opamp0-, Opamp2- Special I/O provides interfaces to the CPU, digital peripherals and interrupts with a programmable high threshold voltage, analog comparator, high sink current, and high impedance state when the device is unpowered. Inverting input to uncommitted opamp. SWDCK External reference input to the analog system. Opamp0+, Opamp2+ Noninverting input to uncommitted opamp. Serial wire debug clock programming and debug port connection. GPIO SWDIO General purpose I/O pin provides interfaces to the CPU, digital peripherals, analog peripherals, interrupts, LCD segment drive, and CapSense[11]. Serial wire debug input and output programming and debug port connection. I2C0: SCL, I2C1: SCL Single wire viewer debug output. I2C SCL line providing wake from sleep on an address match. Any I/O pin can be used for I2C SCL if wake from sleep is not required. SWV TCK JTAG test clock programming and debug port connection. I2C0: SDA, I2C1: SDA TDI I2C JTAG test data In programming and debug port connection. SDA line providing wake from sleep on an address match. Any I/O pin can be used for I2C SDA if wake from sleep is not required. Ind Inductor connection to boost pump. kHz XTAL: Xo, kHz XTAL: Xi TDO JTAG test data out programming and debug port connection. TMS JTAG test mode select programming and debug port connection. 32.768-kHz crystal oscillator pin. Note 11. GPIOs with opamp outputs are not recommended for use with CapSense. Document Number: 001-53304 Rev. *Z Page 11 of 137 PSoC(R) 3: CY8C34 Family Datasheet USBIO, D+ XRES (and configurable XRES) Provides D+ connection directly to a USB 2.0 bus. May be used as a digital I/O pin. Pins are Do Not Use (DNU) on devices without USB. External reset pin. Active low with internal pull-up. Pin P1[2] may be configured to be a XRES pin; see "Nonvolatile Latches (NVLs)" on page 23. USBIO, D- Provides D- connection directly to a USB 2.0 bus. May be used as a digital I/O pin. Pins are No Connect (NC) on devices without USB. VBOOST Power sense connection to boost pump. VBAT Battery supply to boost pump. VCCA. Output of the analog core regulator or the input to the analog core. Requires a 1uF capacitor to VSSA. The regulator output is not designed to drive external circuits. Note that if you use the device with an external core regulator (externally regulated mode), the voltage applied to this pin must not exceed the allowable range of 1.71 V to 1.89 V. When using the internal core regulator, (internally regulated mode, the default), do not tie any power to this pin. For details see Power System on page 30. VCCD. Output of the digital core regulator or the input to the digital core. The two VCCD pins must be shorted together, with the trace between them as short as possible, and a 1uF capacitor to VSSD. The regulator output is not designed to drive external circuits. Note that if you use the device with an external core regulator (externally regulated mode), the voltage applied to this pin must not exceed the allowable range of 1.71 V to 1.89 V. When using the internal core regulator (internally regulated mode, the default), do not tie any power to this pin. For details see Power System on page 30. VDDA Supply for all analog peripherals and analog core regulator. VDDA must be the highest voltage present on the device. All other supply pins must be less than or equal to VDDA. VDDD Supply for all digital peripherals and digital core regulator. VDDD must be less than or equal to VDDA. VSSA Ground for all analog peripherals. VSSB Ground connection for boost pump. VSSD Ground for all digital logic and I/O pins. VDDIO0, VDDIO1, VDDIO2, VDDIO3 Supply for I/O pins. See pinouts for specific I/O pin to VDDIO mapping. Each VDDIO must be tied to a valid operating voltage (1.71 V to 5.5 V), and must be less than or equal to VDDA. Document Number: 001-53304 Rev. *Z 4. CPU 4.1 8051 CPU The CY8C34 devices use a single cycle 8051 CPU, which is fully compatible with the original MCS-51 instruction set. The CY8C34 family uses a pipelined RISC architecture, which executes most instructions in 1 to 2 cycles to provide peak performance of up to 24 MIPS with an average of 2 cycles per instruction. The single cycle 8051 CPU runs ten times faster than a standard 8051 processor. The 8051 CPU subsystem includes these features: Single cycle 8051 CPU Up to 64 KB of flash memory, up to 2 KB of EEPROM, and up to 8 KB of SRAM 512-byte instruction cache between CPU and flash Programmable nested vector interrupt controller Direct memory access (DMA) controller Peripheral HUB (PHUB) External memory interface (EMIF) 4.2 Addressing Modes The following addressing modes are supported by the 8051: Direct Addressing: The operand is specified by a direct 8-bit address field. Only the internal RAM and the SFRs can be accessed using this mode. Indirect Addressing: The instruction specifies the register which contains the address of the operand. The registers R0 or R1 are used to specify the 8-bit address, while the data pointer (DPTR) register is used to specify the 16-bit address. Register Addressing: Certain instructions access one of the registers (R0 to R7) in the specified register bank. These instructions are more efficient because there is no need for an address field. Register Specific Instructions: Some instructions are specific to certain registers. For example, some instructions always act on the accumulator. In this case, there is no need to specify the operand. Immediate Constants: Some instructions carry the value of the constants directly instead of an address. Indexed Addressing: This type of addressing can be used only for a read of the program memory. This mode uses the Data Pointer as the base and the accumulator value as an offset to read a program memory. Bit Addressing: In this mode, the operand is one of 256 bits. Page 12 of 137 PSoC(R) 3: CY8C34 Family Datasheet 4.3 Instruction Set 4.3.1 Instruction Set Summary The 8051 instruction set is highly optimized for 8-bit handling and Boolean operations. The types of instructions supported include: 4.3.1.1 Arithmetic Instructions Arithmetic instructions Logical instructions Data transfer instructions Arithmetic instructions support the direct, indirect, register, immediate constant, and register-specific instructions. Arithmetic modes are used for addition, subtraction, multiplication, division, increment, and decrement operations. Table 4-1 lists the different arithmetic instructions. Boolean instructions Program branching instructions Table 4-1. Arithmetic Instructions Mnemonic Description Bytes Cycles ADD A,Rn Add register to accumulator 1 1 ADD A,Direct Add direct byte to accumulator 2 2 ADD A,@Ri Add indirect RAM to accumulator 1 2 ADD A,#data Add immediate data to accumulator 2 2 ADDC A,Rn Add register to accumulator with carry 1 1 ADDC A,Direct Add direct byte to accumulator with carry 2 2 ADDC A,@Ri Add indirect RAM to accumulator with carry 1 2 ADDC A,#data Add immediate data to accumulator with carry 2 2 SUBB A,Rn Subtract register from accumulator with borrow 1 1 SUBB A,Direct Subtract direct byte from accumulator with borrow 2 2 SUBB A,@Ri Subtract indirect RAM from accumulator with borrow 1 2 SUBB A,#data Subtract immediate data from accumulator with borrow 2 2 INC A Increment accumulator 1 1 INC Rn Increment register 1 2 INC Direct Increment direct byte 2 3 INC @Ri Increment indirect RAM 1 3 DEC A Decrement accumulator 1 1 DEC Rn Decrement register 1 2 DEC Direct Decrement direct byte 2 3 DEC @Ri Decrement indirect RAM 1 3 INC DPTR Increment data pointer 1 1 Multiply accumulator and B 1 2 MUL DIV Divide accumulator by B 1 6 DAA Decimal adjust accumulator 1 3 Document Number: 001-53304 Rev. *Z Page 13 of 137 PSoC(R) 3: CY8C34 Family Datasheet 4.3.1.2 Logical Instructions The logical instructions perform Boolean operations such as AND, OR, XOR on bytes, rotate of accumulator contents, and swap of nibbles in an accumulator. The Boolean operations on the bytes are performed on the bit-by-bit basis. Table 4-2 shows the list of logical instructions and their description. Table 4-2. Logical Instructions Mnemonic Description Bytes Cycles ANL A,Rn AND register to accumulator 1 1 ANL A,Direct AND direct byte to accumulator 2 2 ANL A,@Ri AND indirect RAM to accumulator 1 2 ANL A,#data AND immediate data to accumulator 2 2 ANL Direct, A AND accumulator to direct byte 2 3 ANL Direct, #data AND immediate data to direct byte 3 3 ORL A,Rn OR register to accumulator 1 1 ORL A,Direct OR direct byte to accumulator 2 2 ORL A,@Ri OR indirect RAM to accumulator 1 2 ORL A,#data OR immediate data to accumulator 2 2 ORL Direct, A OR accumulator to direct byte 2 3 ORL Direct, #data OR immediate data to direct byte 3 3 XRL A,Rn XOR register to accumulator 1 1 XRL A,Direct XOR direct byte to accumulator 2 2 XRL A,@Ri XOR indirect RAM to accumulator 1 2 XRL A,#data XOR immediate data to accumulator 2 2 XRL Direct, A XOR accumulator to direct byte 2 3 XRL Direct, #data XOR immediate data to direct byte 3 3 CLR A Clear accumulator 1 1 CPL A Complement accumulator 1 1 RL A Rotate accumulator left 1 1 RLC A Rotate accumulator left through carry 1 1 RR A Rotate accumulator right 1 1 RRC A Rotate accumulator right though carry 1 1 SWAP A Swap nibbles within accumulator 1 1 Document Number: 001-53304 Rev. *Z Page 14 of 137 PSoC(R) 3: CY8C34 Family Datasheet 4.3.1.3 Data Transfer Instructions 4.3.1.4 Boolean Instructions The data transfer instructions are of three types: the core RAM, xdata RAM, and the lookup tables. The core RAM transfer includes transfer between any two core RAM locations or SFRs. These instructions can use direct, indirect, register, and immediate addressing. The xdata RAM transfer includes only the transfer between the accumulator and the xdata RAM location. It can use only indirect addressing. The lookup tables involve nothing but the read of program memory using the Indexed addressing mode. Table 4-3 lists the various data transfer instructions available. The 8051 core has a separate bit addressable memory location. It has 128 bits of bit-addressable RAM and a set of SFRs that are bit addressable. The instruction set includes the whole menu of bit operations such as move, set, clear, toggle, OR, and AND instructions and the conditional jump instructions. Table 4-4 on page 16 lists the available Boolean instructions. Table 4-3. Data Transfer Instructions Mnemonic Description Bytes Cycles MOV A,Rn Move register to accumulator 1 1 MOV A,Direct Move direct byte to accumulator 2 2 MOV A,@Ri Move indirect RAM to accumulator 1 2 MOV A,#data Move immediate data to accumulator 2 2 MOV Rn,A Move accumulator to register 1 1 MOV Rn,Direct Move direct byte to register 2 3 MOV Rn, #data Move immediate data to register 2 2 MOV Direct, A Move accumulator to direct byte 2 2 MOV Direct, Rn Move register to direct byte 2 2 MOV Direct, Direct Move direct byte to direct byte 3 3 MOV Direct, @Ri Move indirect RAM to direct byte 2 3 MOV Direct, #data Move immediate data to direct byte 3 3 MOV @Ri, A Move accumulator to indirect RAM 1 2 MOV @Ri, Direct Move direct byte to indirect RAM 2 3 MOV @Ri, #data Move immediate data to indirect RAM 2 2 MOV DPTR, #data16 Load data pointer with 16-bit constant 3 3 MOVC A, @A+DPTR Move code byte relative to DPTR to accumulator 1 5 MOVC A, @A + PC Move code byte relative to PC to accumulator 1 4 MOVX A,@Ri Move external RAM (8-bit) to accumulator 1 4 MOVX A, @DPTR Move external RAM (16-bit) to accumulator 1 3 MOVX @Ri, A Move accumulator to external RAM (8-bit) 1 5 MOVX @DPTR, A Move accumulator to external RAM (16-bit) 1 4 PUSH Direct Push direct byte onto stack 2 3 POP Direct Pop direct byte from stack 2 2 XCH A, Rn Exchange register with accumulator 1 2 XCH A, Direct Exchange direct byte with accumulator 2 3 XCH A, @Ri Exchange indirect RAM with accumulator 1 3 Exchange low order indirect digit RAM with accumulator 1 3 XCHD A, @Ri Document Number: 001-53304 Rev. *Z Page 15 of 137 PSoC(R) 3: CY8C34 Family Datasheet Table 4-4. Boolean Instructions Mnemonic Description Bytes Cycles CLR C Clear carry 1 1 CLR bit Clear direct bit 2 3 SETB C Set carry 1 1 SETB bit Set direct bit 2 3 CPL Complement carry 1 1 C CPL bit Complement direct bit 2 3 ANL C, bit AND direct bit to carry 2 2 ANL C, /bit AND complement of direct bit to carry 2 2 OR direct bit to carry 2 2 ORL C, /bit OR complement of direct bit to carry 2 2 MOV C, bit Move direct bit to carry 2 2 MOV bit, C Move carry to direct bit 2 3 JC Jump if carry is set 2 3 JNC rel Jump if no carry is set 2 3 JB Jump if direct bit is set 3 5 JNB bit, rel Jump if direct bit is not set 3 5 JBC bit, rel Jump if direct bit is set and clear bit 3 5 ORL C, bit rel bit, rel 4.3.1.5 Program Branching Instructions The 8051 supports a set of conditional and unconditional jump instructions that help to modify the program execution flow. Table 4-5 shows the list of jump instructions. Table 4-5. Jump Instructions Mnemonic Description Bytes Cycles ACALL addr11 Absolute subroutine call 2 4 LCALL addr16 Long subroutine call 3 4 RET Return from subroutine 1 4 RETI Return from interrupt 1 4 AJMP addr11 Absolute jump 2 3 LJMP addr16 Long jump 3 4 SJMP rel Short jump (relative address) 2 3 JMP @A + DPTR Jump indirect relative to DPTR 1 5 JZ rel Jump if accumulator is zero 2 4 JNZ rel Jump if accumulator is nonzero 2 4 CJNE A,Direct, rel Compare direct byte to accumulator and jump if not equal 3 5 CJNE A, #data, rel Compare immediate data to accumulator and jump if not equal 3 4 CJNE Rn, #data, rel Compare immediate data to register and jump if not equal 3 4 CJNE @Ri, #data, rel Compare immediate data to indirect RAM and jump if not equal 3 5 DJNZ Rn,rel Decrement register and jump if not zero 2 4 DJNZ Direct, rel Decrement direct byte and jump if not zero 3 5 NOP No operation 1 1 Document Number: 001-53304 Rev. *Z Page 16 of 137 PSoC(R) 3: CY8C34 Family Datasheet Any digitally routable signal, the CPU, or another DMA channel, 4.4 DMA and PHUB The PHUB and the DMA controller are responsible for data transfer between the CPU and peripherals, and also data transfers between peripherals. The PHUB and DMA also control device configuration during boot. The PHUB consists of: A central hub that includes the DMA controller, arbiter, and router Multiple spokes that radiate outward from the hub to most peripherals There are two PHUB masters: the CPU and the DMA controller. Both masters may initiate transactions on the bus. The DMA channels can handle peripheral communication without CPU intervention. The arbiter in the central hub determines which DMA channel is the highest priority if there are multiple requests. 4.4.1 PHUB Features CPU and DMA controller are both bus masters to the PHUB Eight Multi-layer AHB Bus parallel access paths (spokes) for peripheral access Simultaneous CPU and DMA access to peripherals located on different spokes Simultaneous DMA source and destination burst transactions on different spokes Supports 8, 16, 24, and 32-bit addressing and data Table 4-6. PHUB Spokes and Peripherals can trigger a transaction Each channel can generate up to two interrupts per transfer Transactions can be stalled or canceled Supports transaction size of infinite or 1 to 64 KB TDs may be nested and/or chained for complex transactions 4.4.3 Priority Levels The CPU always has higher priority than the DMA controller when their accesses require the same bus resources. Due to the system architecture, the CPU can never starve the DMA. DMA channels of higher priority (lower priority number) may interrupt current DMA transfers. In the case of an interrupt, the current transfer is allowed to complete its current transaction. To ensure latency limits when multiple DMA accesses are requested simultaneously, a fairness algorithm guarantees an interleaved minimum percentage of bus bandwidth for priority levels 2 through 7. Priority levels 0 and 1 do not take part in the fairness algorithm and may use 100 percent of the bus bandwidth. If a tie occurs on two DMA requests of the same priority level, a simple round robin method is used to evenly share the allocated bandwidth. The round robin allocation can be disabled for each DMA channel, allowing it to always be at the head of the line. Priority levels 2 to 7 are guaranteed the minimum bus bandwidth shown in Table 4-7 after the CPU and DMA priority levels 0 and 1 have satisfied their requirements. Table 4-7. Priority Levels Priority Level % Bus Bandwidth SRAM 0 100.0 1 IOs, PICU, EMIF 1 100.0 2 PHUB local configuration, Power manager, Clocks, IC, SWV, EEPROM, Flash programming interface 2 50.0 3 25.0 4 12.5 5 6.2 6 3.1 7 1.5 PHUB Spokes 0 Peripherals 3 Analog interface and trim, Decimator 4 USB, CAN, I2C, Timers, Counters, and PWMs 5 Reserved 6 UDBs group 1 7 UDBs group 2 4.4.2 DMA Features When the fairness algorithm is disabled, DMA access is granted based solely on the priority level; no bus bandwidth guarantees are made. Twenty-four DMA channels 4.4.4 Transaction Modes Supported Each channel has one or more Transaction Descriptors (TDs) to configure channel behavior. Up to 128 total TDs can be defined TDs can be dynamically updated The flexible configuration of each DMA channel and the ability to chain multiple channels allow the creation of both simple and complex use cases. General use cases include, but are not limited to: Eight levels of priority per channel Document Number: 001-53304 Rev. *Z Page 17 of 137 PSoC(R) 3: CY8C34 Family Datasheet 4.4.4.1 Simple DMA In a simple DMA case, a single TD transfers data between a source and sink (peripherals or memory location). The basic timing diagrams of DMA read and write cycles are shown in Figure 4-1. For more description on other transfer modes, refer to the Technical Reference Manual. Figure 4-1. DMA Timing Diagram ADDRESS Phase DATA Phase ADDRESS Phase CLK ADDR 16/32 DATA Phase CLK A ADDR 16/32 B WRITE A B WRITE DATA (A) DATA READY DATA (A) DATA READY Basic DMA Write Transfer without wait states Basic DMA Read Transfer without wait states A ping pong DMA case uses double buffering to allow one buffer to be filled by one client while another client is consuming the data previously received in the other buffer. In its simplest form, this is done by chaining two TDs together so that each TD calls the opposite TD when complete. can set up this configuration information anywhere in system memory and copy it with a simple TD to the peripheral. After the configuration phase, a data phase TD (or a series of data phase TDs) can begin (potentially using scatter gather). When the data phase TD(s) finish, a status phase TD can be invoked that reads some memory mapped status information from the peripheral and copies it to a location in system memory specified by the CPU for later inspection. Multiple sets of configuration, data, and status phase "subchains" can be strung together to create larger chains that transmit multiple packets in this way. A similar concept exists in the opposite direction to receive the packets. 4.4.4.4 Circular DMA 4.4.4.7 Nested DMA 4.4.4.2 Auto Repeat DMA Auto repeat DMA is typically used when a static pattern is repetitively read from system memory and written to a peripheral. This is done with a single TD that chains to itself. 4.4.4.3 Ping Pong DMA Circular DMA is similar to ping pong DMA except it contains more than two buffers. In this case there are multiple TDs; after the last TD is complete it chains back to the first TD. 4.4.4.5 Scatter Gather DMA In the case of scatter gather DMA, there are multiple noncontiguous sources or destinations that are required to effectively carry out an overall DMA transaction. For example, a packet may need to be transmitted off of the device and the packet elements, including the header, payload, and trailer, exist in various noncontiguous locations in memory. Scatter gather DMA allows the segments to be concatenated together by using multiple TDs in a chain. The chain gathers the data from the multiple locations. A similar concept applies for the reception of data onto the device. Certain parts of the received data may need to be scattered to various locations in memory for software processing convenience. Each TD in the chain specifies the location for each discrete element in the chain. One TD may modify another TD, as the TD configuration space is memory mapped similar to any other peripheral. For example, a first TD loads a second TD's configuration and then calls the second TD. The second TD moves data as required by the application. When complete, the second TD calls the first TD, which again updates the second TD's configuration. This process repeats as often as necessary. 4.5 Interrupt Controller The interrupt controller provides a mechanism for hardware resources to change program execution to a new address, independent of the current task being executed by the main code. The interrupt controller provides enhanced features not found on original 8051 interrupt controllers: Thirty two interrupt vectors Jumps directly to ISR anywhere in code space with dynamic vector addresses 4.4.4.6 Packet Queuing DMA Multiple sources for each vector Packet queuing DMA is similar to scatter gather DMA but specifically refers to packet protocols. With these protocols, there may be separate configuration, data, and status phases associated with sending or receiving a packet. Flexible interrupt to vector matching For instance, to transmit a packet, a memory mapped configuration register can be written inside a peripheral, specifying the overall length of the ensuing data phase. The CPU Document Number: 001-53304 Rev. *Z Each interrupt vector is independently enabled or disabled Each interrupt can be dynamically assigned one of eight priorities Eight level nestable interrupts Page 18 of 137 PSoC(R) 3: CY8C34 Family Datasheet Multiple I/O interrupt vectors Software can send interrupts Software can clear pending interrupts When an interrupt is pending, the current instruction is completed and the program counter is pushed onto the stack. Code execution then jumps to the program address provided by the vector. After the ISR is completed, a RETI instruction is executed and returns execution to the instruction following the previously interrupted instruction. To do this the RETI instruction pops the program counter from the stack. direct connections to the most common interrupt sources and provide the lowest resource cost connection. The DMA interrupt sources provide direct connections to the two DMA interrupt sources provided per DMA channel. The third interrupt source for vectors is from the UDB digital routing array. This allows any digital signal available to the UDB array to be used as an interrupt source. Fixed function interrupts and all interrupt sources may be routed to any interrupt vector using the UDB interrupt source connections. Figure 4-2 represents typical flow of events when an interrupt triggered. Figure 4-3 on page 20 shows the interrupt structure and priority polling. If the same priority level is assigned to two or more interrupts, the interrupt with the lower vector number is executed first. Each interrupt vector may choose from three interrupt sources: Fixed Function, DMA, and UDB. The fixed function interrupts are Figure 4-2. Interrupt Processing Timing Diagram 1 2 3 4 5 6 7 8 9 10 11 S CLK Arrival of new Interrupt INT_INPUT S Pend bit is set on next clock active edge POST and PEND bits cleared after IRQ is sleared PEND S Interrupt is posted to ascertain the priority POST S Interrupt request sent to core for processing IRQ ACTIVE_INT_NUM (#10) INT_VECT_ADDR NA NA 0x0010 IRQ cleared after receiving IRA S S The active interrupt number is posted to core The active interrupt ISR address is posted to core 0x0000 S S NA S IRA S IRC Interrupt generation and posting to CPU CPU Response Int. State Clear S Completing current instruction and branching to vector address Complete ISR and return TIME Notes 1: Interrupt triggered asynchronous to the clock 2: The PEND bit is set on next active clock edge to indicate the interrupt arrival 3: POST bit is set following the PEND bit 4: Interrupt request and the interrupt number sent to CPU core after evaluation priority (Takes 3 clocks) 5: ISR address is posted to CPU core for branching Document Number: 001-53304 Rev. *Z Page 19 of 137 PSoC(R) 3: CY8C34 Family Datasheet 6: CPU acknowledges the interrupt request 7: ISR address is read by CPU for branching 8, 9: PEND and POST bits are cleared respectively after receiving the IRA from core 10: IRA bit is cleared after completing the current instruction and starting the instruction execution from ISR location (takes 7 cycles) 11: IRC is set to indicate the completion of ISR, Active int. status is restored with previous status The total interrupt latency (ISR execution) = POST + PEND + IRQ + IRA + Completing current instruction and branching = 1+1+1+2+7 cycles = 12 cycles Figure 4-3. Interrupt Structure Interrupt Polling logic Interrupts form Fixed function blocks, DMA and UDBs Highest Priority Interrupt Enable/ Disable, PEND and POST logic Interrupts 0 to 31 from UDBs 0 Interrupts 0 to 31 from Fixed Function Blocks 1 IRQ 8 Level Priority decoder for all interrupts Polling sequence Interrupt routing logic to select 32 sources Interrupt 2 to 30 Interrupts 0 to 31 from DMA Individual Enable Disable bits 0 to 31 ACTIVE_INT_NUM [15:0] INT_VECT_ADDR IRA IRC 31 Global Enable disable bit Document Number: 001-53304 Rev. *Z Lowest Priority Page 20 of 137 PSoC(R) 3: CY8C34 Family Datasheet Table 4-8. Interrupt Vector Table # Fixed Function DMA phub_termout0[0] UDB 0 LVD udb_intr[0] 1 Cache/ECC phub_termout0[1] udb_intr[1] 2 Reserved phub_termout0[2] udb_intr[2] 3 Sleep (Pwr Mgr) phub_termout0[3] udb_intr[3] 4 PICU[0] phub_termout0[4] udb_intr[4] 5 PICU[1] phub_termout0[5] udb_intr[5] 6 PICU[2] phub_termout0[6] udb_intr[6] 7 PICU[3] phub_termout0[7] udb_intr[7] 8 PICU[4] phub_termout0[8] udb_intr[8] 9 PICU[5] phub_termout0[9] udb_intr[9] 10 PICU[6] phub_termout0[10] udb_intr[10] 11 PICU[12] phub_termout0[11] 12 PICU[15] phub_termout0[12] udb_intr[12] 13 Comparators Combined phub_termout0[13] udb_intr[13] 14 Switched Caps Combined phub_termout0[14] udb_intr[14] 15 I2C phub_termout0[15] udb_intr[15] 16 CAN phub_termout1[0] udb_intr[16] 17 Timer/Counter0 phub_termout1[1] udb_intr[17] 18 Timer/Counter1 phub_termout1[2] udb_intr[18] 19 Timer/Counter2 phub_termout1[3] udb_intr[19] 20 Timer/Counter3 phub_termout1[4] udb_intr[20] 21 USB SOF Int phub_termout1[5] udb_intr[21] 22 USB Arb Int phub_termout1[6] udb_intr[22] 23 USB Bus Int phub_termout1[7] udb_intr[23] 24 USB Endpoint[0] phub_termout1[8] udb_intr[24] 25 USB Endpoint Data phub_termout1[9] udb_intr[25] 26 Reserved phub_termout1[10] udb_intr[26] udb_intr[11] 27 LCD phub_termout1[11] 28 Reserved phub_termout1[12] udb_intr[28] 29 Decimator Int phub_termout1[13] udb_intr[29] 30 PHUB Error Int phub_termout1[14] udb_intr[30] 31 EEPROM Fault Int phub_termout1[15] udb_intr[31] Document Number: 001-53304 Rev. *Z udb_intr[27] Page 21 of 137 PSoC(R) 3: CY8C34 Family Datasheet 5. Memory 5.1 Static RAM CY8C34 Static RAM (SRAM) is used for temporary data storage. Up to 8 KB of SRAM is provided and can be accessed by the 8051 or the DMA controller. See Memory Map on page 25. Simultaneous access of SRAM by the 8051 and the DMA controller is possible if different 4-KB blocks are accessed. "Device Security" section on page 68). For more information about how to take full advantage of the security features in PSoC, see the PSoC 3 TRM. Table 5-1. Flash Protection Protection Setting Allowed Not Allowed Unprotected External read and write + internal read and write Flash memory in PSoC devices provides nonvolatile storage for user firmware, user configuration data, bulk data storage, and optional ECC data. The main flash memory area contains up to 64 KB of user program space. Factory Upgrade External write + internal read and write External read Field Upgrade Internal read and write External read and write Up to an additional 8 KB of flash space is available for Error Correcting Codes (ECC). If ECC is not used this space can store device configuration data and bulk user data. User code may not be run out of the ECC flash memory section. ECC can correct one bit error and detect two bit errors per 8 bytes of firmware memory; an interrupt can be generated when an error is detected. Full Protection Internal read External read and write + internal write 5.2 Flash Program Memory The CPU reads instructions located in flash through a cache controller. This improves instruction execution rate and reduces system power consumption by requiring less frequent flash access. The cache has 8 lines at 64 bytes per line for a total of 512 bytes. It is fully associative, automatically controls flash power, and can be enabled or disabled. If ECC is enabled, the cache controller also performs error checking and correction, and interrupt generation. Flash programming is performed through a special interface and preempts code execution out of flash. The flash programming interface performs flash erasing, programming and setting code protection levels. Flash in-system serial programming (ISSP), typically used for production programming, is possible through both the SWD and JTAG interfaces. In-system programming, typically used for bootloaders, is also possible using serial interfaces such as I2C, USB, UART, and SPI, or any communications protocol. 5.3 Flash Security All PSoC devices include a flexible flash-protection model that prevents access and visibility to on-chip flash memory. This prevents duplication or reverse engineering of proprietary code. Flash memory is organized in blocks, where each block contains 256 bytes of program or data and 32 bytes of ECC or configuration data. A total of up to 256 blocks is provided on 64-KB flash devices. The device offers the ability to assign one of four protection levels to each row of flash. Table 5-1 lists the protection modes available. Flash protection levels can only be changed by performing a complete flash erase. The Full Protection and Field Upgrade settings disable external access (through a debugging tool such as PSoC Creator, for example). If your application requires code update through a boot loader, then use the Field Upgrade setting. Use the Unprotected setting only when no security is needed in your application. The PSoC device also offers an advanced security feature called Device Security which permanently disables all test, programming, and debug ports, protecting your application from external access (see the Document Number: 001-53304 Rev. *Z Disclaimer Note the following details of the flash code protection features on Cypress devices. Cypress products meet the specifications contained in their particular Cypress data sheets. Cypress believes that its family of products is one of the most secure families of its kind on the market today, regardless of how they are used. There may be methods, unknown to Cypress, that can breach the code protection features. Any of these methods, to our knowledge, would be dishonest and possibly illegal. Neither Cypress nor any other semiconductor manufacturer can guarantee the security of their code. Code protection does not mean that we are guaranteeing the product as "unbreakable." Cypress is willing to work with the customer who is concerned about the integrity of their code. Code protection is constantly evolving. We at Cypress are committed to continuously improving the code protection features of our products. 5.4 EEPROM PSoC EEPROM memory is a byte-addressable nonvolatile memory. The CY8C34 has up to 2 KB of EEPROM memory to store user data. Reads from EEPROM are random access at the byte level. Reads are done directly; writes are done by sending write commands to an EEPROM programming interface. CPU code execution can continue from flash during EEPROM writes. EEPROM is erasable and writeable at the row level. The EEPROM is divided into 128 rows of 16 bytes each. The factory default values of all EEPROM bytes are 0. Because the EEPROM is mapped to the 8051 xdata space, the CPU cannot execute out of EEPROM. There is no ECC hardware associated with EEPROM. If ECC is required it must be handled in firmware. It can take as much as 20 milliseconds to write to EEPROM or flash. During this time the device should not be reset, or unexpected changes may be made to portions of EEPROM or flash. Reset sources (see Section 6.3.1) include XRES pin, software reset, and watchdog; care should be taken to make sure that these are not inadvertently activated. In addition, the low voltage detect circuits should be configured to generate an interrupt instead of a reset. Page 22 of 137 PSoC(R) 3: CY8C34 Family Datasheet 5.5 Nonvolatile Latches (NVLs) PSoC has a 4-byte array of nonvolatile latches (NVLs) that are used to configure the device at reset. The NVL register map is shown in Table 5-2. Table 5-2. Device Configuration NVL Register Map Register Address 7 6 5 4 3 2 1 0 0x00 PRT3RDM[1:0] PRT2RDM[1:0] PRT1RDM[1:0] PRT0RDM[1:0] 0x01 PRT12RDM[1:0] PRT6RDM[1:0] PRT5RDM[1:0] PRT4RDM[1:0] 0x02 XRESMEN 0x03 DBGEN DIG_PHS_DLY[3:0] PRT15RDM[1:0] ECCEN DPS[1:0] The details for individual fields and their factory default settings are shown in Table 5-3:. Table 5-3. Fields and Factory Default Settings Field Description Settings PRTxRDM[1:0] Controls reset drive mode of the corresponding IO 00b (default) - high impedance analog port. See "Reset Configuration" on page 42. All pins 01b - high impedance digital of the port are set to the same mode. 10b - resistive pull up 11b - resistive pull down XRESMEN Controls whether pin P1[2] is used as a GPIO or as 0 (default for 68-pin 72-pin, and 100-pin parts) - GPIO an external reset. See "Pin Descriptions" on page 11, 1 (default for 48-pin parts) - external reset XRES description. DBGEN Debug Enable allows access to the debug system, for 0 - access disabled third-party programmers. 1 (default) - access enabled DPS[1:0] Controls the usage of various P1 pins as a debug port. 00b - 5-wire JTAG See "Programming, Debug Interfaces, Resources" on 01b (default) - 4-wire JTAG page 65. 10b - SWD 11b - debug ports disabled ECCEN Controls whether ECC flash is used for ECC or for general configuration and data storage. See "Flash Program Memory" on page 22. 0 - ECC disabled 1 (default) - ECC enabled DIG_PHS_DLY[3:0] Selects the digital clock phase delay. See the TRM for details. Although PSoC Creator provides support for modifying the device configuration NVLs, the number of NVL erase / write cycles is limited - see "Nonvolatile Latches (NVL))" on page 109. Document Number: 001-53304 Rev. *Z Page 23 of 137 PSoC(R) 3: CY8C34 Family Datasheet 5.6 External Memory Interface CY8C34 provides an External Memory Interface (EMIF) for connecting to external memory devices. The connection allows read and write accesses to external memories. The EMIF operates in conjunction with UDBs, I/O ports, and other hardware to generate external memory address and control signals. At 33 MHz, each memory access cycle takes four bus clock cycles. Figure 5-1 is the EMIF block diagram. The EMIF supports synchronous and asynchronous memories. The CY8C34 supports only one type of external memory device at a time. External memory can be accessed via the 8051 xdata space; up to 24 address bits can be used. See "xdata Space" section on page 26. The memory can be 8 or 16 bits wide. Figure 5-1. EMIF Block Diagram Address Signals External_ MEM_ ADDR[23:0] I/O PORTs Data Signals External_ MEM_ DATA[15:0] I/O PORTs Control Signals I/O PORTs Data, Address, and Control Signals I/O IF PHUB Data, Address, and Control Signals Control DSI Dynamic Output Control UDB DSI to Port Data, Address, and Control Signals EM Control Signals Other Control Signals EMIF Document Number: 001-53304 Rev. *Z Page 24 of 137 PSoC(R) 3: CY8C34 Family Datasheet 5.7 Memory Map Figure 5-2. 8051 Internal Data Space The CY8C34 8051 memory map is very similar to the MCS-51 memory map. 5.7.1 Code Space The CY8C34 8051 code space is 64 KB. Only main flash exists in this space. See the "Flash Program Memory" section on page 22. 5.7.2 Internal Data Space The CY8C34 8051 internal data space is 384 bytes, compressed within a 256-byte space. This space consists of 256 bytes of RAM (in addition to the SRAM mentioned in Static RAM on page 22) and a 128-byte space for Special Function Registers (SFRs). See Figure 5-2. The lowest 32 bytes are used for 4 banks of registers R0-R7. The next 16 bytes are bit-addressable. 0x00 0x1F 0x20 0x2F 0x30 0x7F 0x80 0xFF 4 Banks, R0-R7 Each Bit-Addressable Area Lower Core RAM Shared with Stack Space (direct and indirect addressing) Upper Core RAM Shared with Stack Space (indirect addressing) SFR Special Function Registers (direct addressing) In addition to the register or bit address modes used with the lower 48 bytes, the lower 128 bytes can be accessed with direct or indirect addressing. With direct addressing mode, the upper 128 bytes map to the SFRs. With indirect addressing mode, the upper 128 bytes map to RAM. Stack operations use indirect addressing; the 8051 stack space is 256 bytes. See the "Addressing Modes" section on page 12 5.7.3 SFRs The Special Function Register (SFR) space provides access to frequently accessed registers. The memory map for the SFR memory space is shown in Table 5-4. Table 5-4. SFR Map Address 0/8 0xF8 SFRPRT15DR 0xF0 B 0xE8 SFRPRT12DR 0xE0 ACC 0xD8 SFRPRT6DR 0xD0 PSW 0xC8 0xC0 1/9 SFRPRT15PS 2/A 3/B 4/C 5/D 6/E 7/F SFRPRT15SEL SFRPRT12SEL SFRPRT12PS MXAX SFRPRT6PS SFRPRT6SEL SFRPRT5DR SFRPRT5PS SFRPRT5SEL SFRPRT4DR SFRPRT4PS SFRPRT4SEL SFRPRT3DR SFRPRT3PS SFRPRT3SEL 0xB8 0xB0 0xA8 IE 0xA0 P2AX SFRPRT1SEL 0x98 SFRPRT2DR SFRPRT2PS 0x90 SFRPRT1DR SFRPRT1PS 0x88 0x80 SFRPRT0DR SFRPRT2SEL DPX0 SFRPRT0PS SFRPRT0SEL SP DPL0 Document Number: 001-53304 Rev. *Z DPH0 DPX1 DPL1 DPH1 DPS Page 25 of 137 PSoC(R) 3: CY8C34 Family Datasheet The CY8C34 family provides the standard set of registers found on industry standard 8051 devices. In addition, the CY8C34 devices add SFRs to provide direct access to the I/O ports on the device. The following sections describe the SFRs added to the CY8C34 family. 5.7.4 XData Space Access SFRs The 8051 core features dual DPTR registers for faster data transfer operations. The data pointer select SFR, DPS, selects which data pointer register, DPTR0 or DPTR1, is used for the following instructions: MOVX @DPTR, A MOVX A, @DPTR MOVC A, @A+DPTR JMP @A+DPTR INC DPTR MOV DPTR, #data16 The extended data pointer SFRs, DPX0, DPX1, MXAX, and P2AX, hold the most significant parts of memory addresses during access to the xdata space. These SFRs are used only with the MOVX instructions. During a MOVX instruction using the DPTR0/DPTR1 register, the most significant byte of the address is always equal to the contents of DPX0/DPX1. During a MOVX instruction using the R0 or R1 register, the most significant byte of the address is always equal to the contents of MXAX, and the next most significant byte is always equal to the contents of P2AX. 5.7.5 I/O Port SFRs The I/O ports provide digital input sensing, output drive, pin interrupts, connectivity for analog inputs and outputs, LCD, and access to peripherals through the DSI. Full information on I/O ports is found in I/O System and Routing on page 36. I/O ports are linked to the CPU through the PHUB and are also available in the SFRs. Using the SFRs allows faster access to a limited set of I/O port registers, while using the PHUB allows boot configuration and access to all I/O port registers. Each SFR supported I/O port provides three SFRs: SFRPRTxDR sets the output data state of the port (where x is 5.7.5.1 xdata Space The 8051 xdata space is 24-bit, or 16 MB in size. The majority of this space is not "external"--it is used by on-chip components. See Table 5-5. External, that is, off-chip, memory can be accessed using the EMIF. See External Memory Interface on page 24. Table 5-5. XDATA Data Address Map Address Range 0x00 0000 - 0x00 1FFF 0x00 4000 - 0x00 42FF 0x00 4300 - 0x00 43FF 0x00 4400 - 0x00 44FF 0x00 4500 - 0x00 45FF 0x00 4700 - 0x00 47FF 0x00 4800 - 0x00 48FF 0x00 4900 - 0x00 49FF 0x00 4E00 - 0x00 4EFF 0x00 4F00 - 0x00 4FFF 0x00 5000 - 0x00 51FF 0x00 5400 - 0x00 54FF 0x00 5800 - 0x00 5FFF 0x00 6000 - 0x00 60FF 0x00 6400 - 0x00 6FFF 0x00 7000 - 0x00 7FFF 0x00 8000 - 0x00 8FFF 0x00 A000 - 0x00 A400 0x01 0000 - 0x01 FFFF 0x05 0220 - 0x05 02F0 0x08 0000 - 0x08 1FFF 0x80 0000 - 0xFF FFFF Purpose SRAM Clocking, PLLs, and oscillators Power management Interrupt controller Ports interrupt control Flash programming interface Cache controller I2C controller Decimator Fixed timer/counter/PWMs I/O ports control External Memory Interface (EMIF) control registers Analog Subsystem interface USB controller UDB Working Registers PHUB configuration EEPROM CAN Digital Interconnect configuration Debug controller Flash ECC bytes External Memory Interface port number and includes ports 0-6, 12 and 15) The SFRPRTxSEL selects whether the PHUB PRTxDR register or the SFRPRTxDR controls each pin's output buffer within the port. If a SFRPRTxSEL[y] bit is high, the corresponding SFRPRTxDR[y] bit sets the output state for that pin. If a SFRPRTxSEL[y] bit is low, the corresponding PRTxDR[y] bit sets the output state of the pin (where y varies from 0 to 7). The SFRPRTxPS is a read only register that contains pin state values of the port pins. Document Number: 001-53304 Rev. *Z Page 26 of 137 PSoC(R) 3: CY8C34 Family Datasheet 6. System Integration Seven general purpose clock sources 3- to 24-MHz IMO, 2 percent at 3 MHz 4- to 25-MHz external crystal oscillator (MHzECO) Clock doubler provides a doubled clock frequency output for the USB block, see USB Clock Domain on page 30 DSI signal from an external I/O pin or other logic 24- to 50- MHz fractional PLL sourced from IMO, MHzECO, or DSI 1 kHz, 33 kHz, 100 kHz ILO for Watch Dog Timer (WDT) and Sleep Timer 32.768-kHz external crystal oscillator (kHzECO) for RTC IMO has a USB mode that auto locks to the USB bus clock requiring no external crystal for USB. (USB equipped parts only) 6.1 Clocking System The clocking system generates, divides, and distributes clocks throughout the PSoC system. For the majority of systems, no external crystal is required. The IMO and PLL together can generate up to a 50 MHz clock, accurate to 2 percent over voltage and temperature. Additional internal and external clock sources allow each design to optimize accuracy, power, and cost. Any of the clock sources can be used to generate other clock frequencies in the 16-bit clock dividers and UDBs for anything the user wants, for example a UART baud rate generator. Clock generation and distribution is automatically configured through the PSoC Creator IDE graphical interface. This is based on the complete system's requirements. It greatly speeds the design process. PSoC Creator allows you to build clocking systems with minimal input. You can specify desired clock frequencies and accuracies, and the software locates or builds a clock that meets the required specifications. This is possible because of the programmability inherent in PSoC. Key features of the clocking system include: Independently sourced clock in all clock dividers Eight 16-bit clock dividers for the digital system Four 16-bit clock dividers for the analog system Dedicated 16-bit divider for the bus clock Dedicated 4-bit divider for the CPU clock Automatic clock configuration in PSoC Creator Table 6-1. Oscillator Summary Source IMO MHzECO Fmin 3 MHz 4 MHz Tolerance at Fmin 2% over voltage and temperature Crystal dependent Fmax 24 MHz 25 MHz Tolerance at Fmax 4% Crystal dependent Startup Time 13 s max 5 ms typ, max is crystal dependent DSI PLL Doubler ILO 0 MHz 24 MHz 48 MHz 1 kHz Input dependent Input dependent Input dependent -50%, +100% 33 MHz 50 MHz 48 MHz 100 kHz Input dependent Input dependent Input dependent -55%, +100% Input dependent 250 s max 1 s max 15 ms max in lowest power mode kHzECO 32 kHz Crystal dependent 32 kHz Crystal dependent 500 ms typ, max is crystal dependent Document Number: 001-53304 Rev. *Z Page 27 of 137 PSoC(R) 3: CY8C34 Family Datasheet Figure 6-1. Clocking Subsystem 3-24 MHz IMO 4-25 MHz ECO External IO or DSI 0-33 MHz 32 kHz ECO 1,33,100 kHz ILO CPU Clock Divider 4 bit 48 MHz Doubler for USB 24-50 MHz PLL Master Mux Bus Clock Bus Clock Divider 16 bit 7 Digital Clock Divider 16 bit Digital Clock Divider 16 bit Analog Clock Divider 16 bit s k e w Digital Clock Divider 16 bit Digital Clock Divider 16 bit Analog Clock Divider 16 bit s k e w 7 Digital Clock Divider 16 bit Digital Clock Divider 16 bit Analog Clock Divider 16 bit s k e w Digital Clock Divider 16 bit Digital Clock Divider 16 bit Analog Clock Divider 16 bit s k e w 6.1.1 Internal Oscillators Figure 6-1 shows that there are two internal oscillators. They can be routed directly or divided. The direct routes may not have a 50% duty cycle. Divided clocks have a 50% duty cycle. 6.1.1.1 Internal Main Oscillator In most designs the IMO is the only clock source required, due to its 2-percent accuracy. The IMO operates with no external components and outputs a stable clock. A factory trim for each frequency range is stored in the device. With the factory trim, tolerance varies from 2 percent at 3 MHz, up to 4 percent at 24 MHz. The IMO, in conjunction with the PLL, allows generation of other clocks up to the device's maximum frequency (see Phase-Locked Loop). CPU Clock The PLL block provides a mechanism for generating clock frequencies based upon a variety of input sources. The PLL outputs clock frequencies in the range of 24 to 50 MHz. Its input and feedback dividers supply 4032 discrete ratios to create almost any desired clock frequency. The accuracy of the PLL output depends on the accuracy of the PLL input source. The most common PLL use is to multiply the IMO clock at 3 MHz, where it is most accurate to generate the other clocks up to the device's maximum frequency. The IMO provides clock outputs at 3, 6, 12, and 24 MHz. The PLL achieves phase lock within 250 s (verified by bit setting). It can be configured to use a clock from the IMO, MHzECO or DSI (external pin). The PLL clock source can be used until lock is complete and signaled with a lock bit. The lock signal can be routed through the DSI to generate an interrupt. Disable the PLL before entering low-power modes. 6.1.1.2 Clock Doubler 6.1.1.4 Internal Low-Speed Oscillator The clock doubler outputs a clock at twice the frequency of the input clock. The doubler works at input frequency of 24 MHz, providing 48 MHz for the USB. It can be configured to use a clock from the IMO, MHzECO, or the DSI (external pin). The ILO provides clock frequencies for low-power consumption, including the watchdog timer, and sleep timer. The ILO generates up to three different clocks: 1 kHz, 33 kHz, and 100 kHz. 6.1.1.3 Phase-Locked Loop The PLL allows low-frequency, high-accuracy clocks to be multiplied to higher frequencies. This is a trade off between higher clock frequency and accuracy and, higher power consumption and increased startup time. Document Number: 001-53304 Rev. *Z The 1 kHz clock (CLK1K) is typically used for a background `heartbeat' timer. This clock inherently lends itself to low-power supervisory operations such as the watchdog timer and long sleep intervals using the central timewheel (CTW). The central timewheel is a 1 kHz, free running, 13-bit counter clocked by the ILO. The central timewheel is always enabled except in hibernate mode and when the CPU is stopped during Page 28 of 137 PSoC(R) 3: CY8C34 Family Datasheet debug on chip mode. It can be used to generate periodic interrupts for timing purposes or to wake the system from a low-power mode. Firmware can reset the central timewheel. Systems that require accurate timing should use the RTC capability instead of the central timewheel. The 100-kHz clock (CLK100K) can be used as a low power master clock. It can also generate time intervals using the fast timewheel. The oscillator works in two distinct power modes. This allows users to trade off power consumption with noise immunity from neighboring circuits. The GPIO pins connected to the external crystal and capacitors are fixed. Figure 6-3. 32kHzECO Block Diagram 32 kHz Crystal Osc The fast timewheel is a 5-bit counter, clocked by the 100-kHz clock. It features programmable settings and automatically resets when the terminal count is reached. An optional interrupt can be generated each time the terminal count is reached. This enables flexible, periodic interrupts of the CPU at a higher rate than is allowed using the central timewheel. The 33 kHz clock (CLK33K) comes from a divide-by-3 operation on CLK100K. This output can be used as a reduced accuracy version of the 32.768-kHz ECO clock with no need for a crystal. 6.1.2 External Oscillators Figure 6-1 shows that there are two external oscillators. They can be routed directly or divided. The direct routes may not have a 50% duty cycle. Divided clocks have a 50% duty cycle. 6.1.2.1 MHz External Crystal Oscillator Xi (Pin P15[3]) XCLK32K Xo (Pin P15[2]) External Components 32 kHz crystal Capacitors The MHzECO provides high frequency, high precision clocking using an external crystal (see Figure 6-2). It supports a wide variety of crystal types, in the range of 4 to 25 MHz. When used in conjunction with the PLL, it can generate other clocks up to the device's maximum frequency (see "Phase-Locked Loop" section on page 28). The GPIO pins connecting to the external crystal and capacitors are fixed. MHzECO accuracy depends on the crystal chosen. It is recommended that the external 32.768-kHz watch crystal have a load capacitance (CL) of 6 pF or 12.5 pF. Check the crystal manufacturer's datasheet. The two external capacitors, CL1 and CL2, are typically of the same value, and their total capacitance, CL1CL2 / (CL1 + CL2), including pin and trace capacitance, should equal the crystal CL value. For more information, refer to application note AN54439: PSoC 3 and PSoC 5 External Oscillators. See also pin capacitance specifications in the "GPIO" section on page 79. Figure 6-2. MHzECO Block Diagram 6.1.2.3 Digital System Interconnect 4 - 25 MHz Crystal Osc XCLK_MHZ The DSI provides routing for clocks taken from external clock oscillators connected to I/O. The oscillators can also be generated within the device in the digital system and Universal Digital Blocks. While the primary DSI clock input provides access to all clocking resources, up to eight other DSI clocks (internally or externally generated) may be routed directly to the eight digital clock dividers. This is only possible if there are multiple precision clock sources. Xi (Pin P15[1]) External Components Xo (Pin P15[0]) 4 - 25 MHz crystal Capacitors 6.1.2.2 32.768-kHz ECO The 32.768-kHz External Crystal Oscillator (32kHzECO) provides precision timing with minimal power consumption using an external 32.768-kHz watch crystal (see Figure 6-3). The 32kHzECO also connects directly to the sleep timer and provides the source for the RTC. The RTC uses a 1-second interrupt to implement the RTC functionality in firmware. Document Number: 001-53304 Rev. *Z 6.1.3 Clock Distribution All seven clock sources are inputs to the central clock distribution system. The distribution system is designed to create multiple high precision clocks. These clocks are customized for the design's requirements and eliminate the common problems found with limited resolution prescalers attached to peripherals. The clock distribution system generates several types of clock trees. The master clock is used to select and supply the fastest clock in the system for general clock requirements and clock synchronization of the PSoC device. Bus Clock 16-bit divider uses the master clock to generate the bus clock used for data transfers. Bus clock is the source clock for the CPU clock divider. Eight fully programmable 16-bit clock dividers generate digital system clocks for general use in the digital system, as configured by the design's requirements. Digital system clocks Page 29 of 137 PSoC(R) 3: CY8C34 Family Datasheet can generate custom clocks derived from any of the seven clock sources for any purpose. Examples include baud rate generators, accurate PWM periods, and timer clocks, and many others. If more than eight digital clock dividers are required, the Universal Digital Blocks (UDBs) and fixed function Timer/Counter/PWMs can also generate clocks. Four 16-bit clock dividers generate clocks for the analog system components that require clocking, such as ADC and mixers. The analog clock dividers include skew control to ensure that critical analog events do not occur simultaneously with digital switching events. This is done to reduce analog system noise. Each clock divider consists of an 8-input multiplexer, a 16-bit clock divider (divide by 2 and higher) that generates ~50 percent duty cycle clocks, master clock resynchronization logic, and deglitch logic. The outputs from each digital clock tree can be routed into the digital system interconnect and then brought back into the clock system as an input, allowing clock chaining of up to 32 bits. 6.1.4 USB Clock Domain The USB clock domain is unique in that it operates largely asynchronously from the main clock network. The USB logic contains a synchronous bus interface to the chip, while running on an asynchronous clock to process USB data. The USB logic requires a 48 MHz frequency. This frequency can be generated from different sources, including DSI clock at 48 MHz or doubled value of 24 MHz from internal oscillator, DSI signal, or crystal oscillator. 6.2 Power System The power system consists of separate analog, digital, and I/O supply pins, labeled VDDA, VDDD, and VDDIOX, respectively. It also includes two internal 1.8 V regulators that provide the digital (VCCD) and analog (Vcca) supplies for the internal core logic. The output pins of the regulators (VCCD and VCCA) and the VDDIO pins must have capacitors connected as shown in Figure 6-4. The two VCCD pins must be shorted together, with as short a trace as possible, and connected to a 1 F 10 percent X5R capacitor. The power system also contains a sleep regulator, an I2C regulator, and a hibernate regulator. Figure 6-4. PSoC Power System VDDD 1 F VDDIO2 VDDD I /O Supply VSSD VCCD VDDIO 2 VDDIO0 0.1 F 0.1F I/O Supply VDDIO0 0.1 F I2C Regulator Sleep Regulator Digital Domain VDDA VDDA VCCA Analog Regulator Digital Regulators VSSB 0.1F 1 F VSSA VDDD VSSD I/O Supply VCCD VDDIO1 Hibernate Regulator 0.1 F I/O Supply VDDIO3 Analog Domain 0.1 F 0.1F VDDIO1 VDDD VDDIO3 Notes The two VCCD pins must be connected together with as short a trace as possible. A trace under the device is recommended, as shown in Figure 2-8 on page 11. It is good practice to check the datasheets for your bypass capacitors, specifically the working voltage and the DC bias specifications. With some capacitors, the actual capacitance can decrease considerably when the DC bias (VDDX or VCCX in Figure 6-4) is a significant percentage of the rated working voltage. You can power the device in internally regulated mode, where the voltage applied to the VDDx pins is as high as 5.5 V, and the internal regulators provide the core voltages. In this mode, do not apply power to the VCCx pins, and do not tie the VDDx pins to the VCCx pins. You can also power the device in externally regulated mode, that is, by directly powering the VCCD and VCCA pins. In this configuration, the VDDD pins should be shorted to the VCCD pins and the VDDA pin should be shorted to the VCCA pin. The allowed supply range in this configuration is 1.71 V to 1.89 V. After power up in this configuration, the internal regulators are on by default, and should be disabled to reduce power consumption. Document Number: 001-53304 Rev. *Z Page 30 of 137 PSoC(R) 3: CY8C34 Family Datasheet Active is the main processing mode. Its functionality is configurable. Each power controllable subsystem is enabled or disabled by using separate power configuration template registers. In alternate active mode, fewer subsystems are enabled, reducing power. In sleep mode most resources are disabled regardless of the template settings. Sleep mode is optimized to provide timed sleep intervals and RTC functionality. The lowest power mode is hibernate, which retains register and SRAM state, but no clocks, and allows wakeup only from I/O pins. Figure 6-5 on page 32 illustrates the allowable transitions between power modes. Sleep and hibernate modes should not be entered until all VDDIO supplies are at valid voltage levels. 6.2.1 Power Modes PSoC 3 devices have four different power modes, as shown in Table 6-2 and Table 6-3. The power modes allow a design to easily provide required functionality and processing power while simultaneously minimizing power consumption and maximizing battery life in low-power and portable devices. PSoC 3 power modes, in order of decreasing power consumption are: Active Alternate Active Sleep Hibernate Table 6-2. Power Modes Power Modes Description Entry Condition Wakeup Source Active Clocks Regulator Active Primary mode of operation, all peripherals available (programmable) Wakeup, reset, manual register entry Any interrupt Any (programmable) All regulators available. Digital and analog regulators can be disabled if external regulation used. Alternate Active Similar to Active mode, and is Manual register typically configured to have fewer entry peripherals active to reduce power. One possible configuration is to use the UDBs for processing, with the CPU turned off Any interrupt Any (programmable) All regulators available. Digital and analog regulators can be disabled if external regulation used. Sleep All subsystems automatically disabled Comparator, ILO/kHzECO PICU, I2C, RTC, CTW, LVD Both digital and analog regulators buzzed. Digital and analog regulators can be disabled if external regulation used. Hibernate All subsystems automatically Manual register disabled entry Lowest power consuming mode with all peripherals and internal regulators disabled, except hibernate regulator is enabled Configuration and memory contents retained PICU Only hibernate regulator active. Manual register entry Table 6-3. Power Modes Wakeup Time and Power Consumption Sleep Modes Wakeup Time Current (typ) Code Execution Digital Resources Analog Resources Clock Sources Available Wakeup Sources Reset Sources Active - 1.2 mA[12] Yes All All All - All Alternate Active - - User defined All All All - All <15 s 1 A No I2C Comparator ILO/kHzECO Comparator, PICU, I2C, RTC, CTW, LVD XRES, LVD, WDR <100 s 200 nA No None None None PICU XRES Sleep Hibernate Note 12. Bus clock off. Execute from cache at 6 MHz. See Table 11-2 on page 71. Document Number: 001-53304 Rev. *Z Page 31 of 137 PSoC(R) 3: CY8C34 Family Datasheet 6.2.1.5 Wakeup Events Figure 6-5. Power Mode Transitions Active Manual Sleep Hibernate Alternate Active 6.2.1.1 Active Mode Active mode is the primary operating mode of the device. When in active mode, the active configuration template bits control which available resources are enabled or disabled. When a resource is disabled, the digital clocks are gated, analog bias currents are disabled, and leakage currents are reduced as appropriate. User firmware can dynamically control subsystem power by setting and clearing bits in the active configuration template. The CPU can disable itself, in which case the CPU is automatically reenabled at the next wakeup event. When a wakeup event occurs, the global mode is always returned to active, and the CPU is automatically enabled, regardless of its template settings. Active mode is the default global power mode upon boot. 6.2.1.2 Alternate Active Mode Alternate Active mode is very similar to Active mode. In alternate active mode, fewer subsystems are enabled, to reduce power consumption. One possible configuration is to turn off the CPU and flash, and run peripherals at full speed. 6.2.1.3 Sleep Mode Sleep mode reduces power consumption when a resume time of 15 s is acceptable. The wake time is used to ensure that the regulator outputs are stable enough to directly enter active mode. 6.2.1.4 Hibernate Mode In hibernate mode nearly all of the internal functions are disabled. Internal voltages are reduced to the minimal level to keep vital systems alive. Configuration state is preserved in hibernate mode and SRAM memory is retained. GPIOs configured as digital outputs maintain their previous values and external GPIO pin interrupt settings are preserved. The device can only return from hibernate mode in response to an external I/O interrupt. The resume time from hibernate mode is less than 100 s. To achieve an extremely low current, the hibernate regulator has limited capacity. This limits the frequency of any signal present on the input pins - no GPIO should toggle at a rate greater than 10 kHz while in hibernate mode. If pins must be toggled at a high rate while in a low power mode, use sleep mode instead. Document Number: 001-53304 Rev. *Z Wakeup events are configurable and can come from an interrupt or device reset. A wakeup event restores the system to active mode. Firmware enabled interrupt sources include internally generated interrupts, power supervisor, central timewheel, and I/O interrupts. Internal interrupt sources can come from a variety of peripherals, such as analog comparators and UDBs. The central timewheel provides periodic interrupts to allow the system to wake up, poll peripherals, or perform real-time functions. Reset event sources include the external reset I/O pin (XRES), WDT, and Precision Reset (PRES). 6.2.2 Boost Converter Applications that use a supply voltage of less than 1.71 V, such as solar panels or single cell battery supplies, may use the on-chip boost converter to generate a minimum of 1.8 V supply voltage. The boost converter may also be used in any system that requires a higher operating voltage than the supply provides such as driving 5.0 V LCD glass in a 3.3 V system. With the addition of an inductor, Schottky diode, and capacitors, it produces a selectable output voltage sourcing enough current to operate the PSoC and other on-board components. The boost converter accepts an input voltage VBAT from 0.5 V to 3.6 V, and can start up with VBAT as low as 0.5 V. The converter provides a user configurable output voltage of 1.8 to 5.0 V (VOUT) in 100 mV increments. VBAT is typically less than VOUT; if VBAT is greater than or equal to VOUT, then VOUT will be slightly less than VBAT due to resistive losses in the boost converter. The block can deliver up to 50 mA (IBOOST) depending on configuration to both the PSoC device and external components. The sum of all current sinks in the design including the PSoC device, PSoC I/O pin loads, and external component loads must be less than the IBOOST specified maximum current. Four pins are associated with the boost converter: VBAT, VSSB, VBOOST, and IND. The boosted output voltage is sensed at the VBOOST pin and must be connected directly to the chip's supply inputs; VDDA, VDDD, and VDDIO if used to power the PSoC device. The boost converter requires four components in addition to those required in a non-boost design, as shown in Figure 6-6 on page 33. A 22 F capacitor (CBAT) is required close to the VBAT pin to provide local bulk storage of the battery voltage and provide regulator stability. A diode between the battery and VBAT pin should not be used for reverse polarity protection because the diodes forward voltage drop reduces the VBAT voltage. Between the VBAT and IND pins, an inductor of 4.7 H, 10 H, or 22 H is required. The inductor value can be optimized to increase the boost converter efficiency based on input voltage, output voltage, temperature, and current. Inductor size is determined by following the design guidance in this chapter and electrical specifications. The inductor must be placed within 1 cm of the VBAT and IND pins and have a minimum saturation current of 750 mA. Between the IND and VBOOST pins, place a Schottky diode within 1 cm of the pins. The Schottky diode shall have a forward current rating of at least 1.0 A and a reverse voltage of at least 20 V. Connect a 22-F bulk capacitor (CBOOST) close to VBOOST to provide regulator output stability. It is important to sum the total capacitance connected to the VBOOST pin and ensure the maximum CBOOST specification is not exceeded. All capacitors must be rated for a minimum of 10 V to minimize capacitive losses due to voltage de-rating. Page 32 of 137 PSoC(R) 3: CY8C34 Family Datasheet Figure 6-6. Application of Boost Converter powering PSoC device PSoC VDDA External Load VDDD VDDD 0.1 F 1.0 F 0.1 F 1.0 F 0.1 F 1.0 F VBOOST Schottky, 1A IND 4.7 H 10 H 22 H VDDIO0 0.1 F Boost VDDIO2 Logic VDDIO1 VBAT 22 F 0.1 F 0.1 F VDDIO3 VSSB 0.1 F 0.5-3.6 V VSSA 22 F VSSD All components and values are required The boost converter may also generate a supply that is not used directly by the PSoC device. An example of this use case is boosting a 1.8 V supply to 4.0 V to drive a white LED. If the boost converter is not supplying the PSoC devices VDDA, VDDD, and VDDIO it must comply with the same design rules as supplying the PSoC device, but with a change to the bulk capacitor requirements. A parallel arrangement 22 F, 1.0 F, and 0.1 F capacitors are all required on the Vout supply and must be placed within 1 cm of the VBOOST pin to ensure regulator stability. Figure 6-7. Application of Boost Converter not powering PSoC device VOUT External Load PSoC VDDA VDDD 22 F 1.0 F 0.1 F VDDD VBOOST Schottky, 1A 4.7 H 10 H 22 H IND VBAT VDDIO0 VDDA, VDDD, and VDDIO connections per section 6.2 Power System. Boost VDDIO2 Logic VDDIO1 22 F VDDIO3 VSSB 0.5-3.6 V VSSA VSSD All components and values are required The switching frequency is set to 400 kHz using an oscillator integrated into the boost converter. The boost converter can be operated in two different modes: active and standby. Active mode is the normal mode of operation where the boost regulator Document Number: 001-53304 Rev. *Z actively generates a regulated output voltage. In standby mode, most boost functions are disabled, thus reducing power consumption of the boost circuit. Only minimal power is provided, typically < 5 A to power the PSoC device in Sleep mode. The Page 33 of 137 PSoC(R) 3: CY8C34 Family Datasheet boost typically draws 250 A in active mode and 25 A in standby mode. The boost operating modes must be used in conjunction with chip power modes to minimize total power consumption. Table 6-4 lists the boost power modes available in different chip power modes. Table 6-4. Chip and Boost Power Modes Compatibility Chip Power Modes Boost Power Modes Chip-active or alternate Boost must be operated in its active active mode mode. Chip-sleep mode Boost can be operated in either active or standby mode. In boost standby mode, the chip must wake up periodically for boost active-mode refresh. Chip-hibernate mode Boost can be operated in its active mode. However, it is recommended not to use the boost in chip hibernate mode due to the higher current consumption in boost active mode. 6.2.2.1 Boost Firmware Requirements To ensure boost inrush current is within specification at startup, the Enable Fast IMO During Startup value must be unchecked in the PSoC Creator IDE. The Enable Fast IMO During Startup option is found in PSoC Creator in the design wide resources (cydwr) file System tab. Un-checking this option configures the device to run at 12 MHz vs 48 MHz during startup while configuring the device. The slower clock speed results in reduced current draw through the boost circuit. 6.2.2.2 Boost Design Process Correct operation of the boost converter requires specific component values determined for each designs unique operating conditions. The CBAT capacitor, Inductor, Schottky diode, and CBOOST capacitor components are required with the values specified in the electrical specifications, Table 11-7 on page 77. The only variable component value is the inductor LBOOST which is primarily sized for correct operation of the boost across operating conditions and secondarily for efficiency. Additional operating region constraints exist for VOUT, VBAT, IOUT, and TA. The following steps must be followed to determine boost converter operating parameters and LBOOST value. 1. Choose desired VBAT, VOUT, TA, and IOUT operating condition ranges for the application. 2. Determine if VBAT and VOUT ranges fit the boost operating range based on the TA range over VBAT and VOUT chart, Figure 11-8 on page 77. If the operating ranges are not met, Document Number: 001-53304 Rev. *Z modify the operating conditions or use an external boost regulator. 3. Determine if the desired ambient temperature (TA) range fits the ambient temperature operating range based on the TA range over VBAT and VOUT chart, Figure 11-8 on page 77. If the temperature range is not met, modify the operating conditions and return to step 2, or use an external boost regulator. 4. Determine if the desired output current (IOUT) range fits the output current operating range based on the IOUT range over VBAT and VOUT chart, Figure 11-9 on page 77. If the output current range is not met, modify the operating conditions and return to step 2, or use an external boost regulator. 5. Find the allowed inductor values based on the LBOOST values over VBAT and VOUT chart, Figure 11-10 on page 77. 6. Based on the allowed inductor values, inductor dimensions, inductor cost, boost efficiency, and VRIPPLE choose the optimum inductor value for the system. Boost efficiency and VRIPPLE typical values are provided in the Efficiency vs VBAT and VRIPPLE vs VBAT charts, Figure 11-11 on page 78 through Figure 11-14 on page 78. In general, if high efficiency and low VRIPPLE are most important, then the highest allowed inductor value should be used. If low inductor cost or small inductor size are most important, then one of the smaller allowed inductor values should be used. If the allowed inductor(s) efficiency, VRIPPLE, cost or dimensions are not acceptable for the application than an external boost regulator should be used. 6.3 Reset CY8C34 has multiple internal and external reset sources available. The reset sources are: Power source monitoring - The analog and digital power voltages, VDDA, VDDD, VCCA, and VCCD are monitored in several different modes during power up, active mode, and sleep mode (buzzing). If any of the voltages goes outside predetermined ranges then a reset is generated. The monitors are programmable to generate an interrupt to the processor under certain conditions before reaching the reset thresholds. External - The device can be reset from an external source by pulling the reset pin (XRES) low. The XRES pin includes an internal pull-up to VDDIO1. VDDD, VDDA, and VDDIO1 must all have voltage applied before the part comes out of reset. Watchdog timer - A watchdog timer monitors the execution of instructions by the processor. If the watchdog timer is not reset by firmware within a certain period of time, the watchdog timer generates a reset. Software - The device can be reset under program control. Page 34 of 137 PSoC(R) 3: CY8C34 Family Datasheet ALVI, DLVI, AHVI - Analog/Digital Low Voltage Interrupt, Figure 6-8. Resets Analog High Voltage Interrupt VDDD VDDA Power Voltage Level Monitors Reset Pin External Reset Processor Interrupt Reset Controller System Reset Watchdog Timer Software Reset Register The term device reset indicates that the processor as well as analog and digital peripherals and registers are reset. A reset status register shows some of the resets or power voltage monitoring interrupts. The program may examine this register to detect and report certain exception conditions. This register is cleared after a power-on reset. For details see the Technical Reference Manual. 6.3.1 Reset Sources 6.3.1.1 Power Voltage Level Monitors IPOR - Initial Power-on Reset At initial power on, IPOR monitors the power voltages VDDD, VDDA, VCCD and VCCA. The trip level is not precise. It is set to approximately 1 volt, which is below the lowest specified operating voltage but high enough for the internal circuits to be reset and to hold their reset state. The monitor generates a reset pulse that is at least 150 ns wide. It may be much wider if one or more of the voltages ramps up slowly. After boot, the IPOR circuit is disabled and voltage supervision is handed off to the precise low-voltage reset (PRES) circuit. PRES - Precise Low Voltage Reset This circuit monitors the outputs of the analog and digital internal regulators after power up. The regulator outputs are compared to a precise reference voltage. The response to a PRES trip is identical to an IPOR reset. In normal operating mode, the program cannot disable the digital PRES circuit. The analog regulator can be disabled, which also disables the analog portion of the PRES. The PRES circuit is disabled automatically during sleep and hibernate modes, with one exception: During sleep mode the regulators are periodically activated (buzzed) to provide supervisory services and to reduce wakeup time. At these times the PRES circuit is also buzzed to allow periodic voltage monitoring. Document Number: 001-53304 Rev. *Z Interrupt circuits are available to detect when VDDA and VDDD go outside a voltage range. For AHVI, VDDA is compared to a fixed trip level. For ALVI and DLVI, VDDA and VDDD are compared to trip levels that are programmable, as listed in Table 6-5. ALVI and DLVI can also be configured to generate a device reset instead of an interrupt. Table 6-5. Analog/Digital Low Voltage Interrupt, Analog High Voltage Interrupt Voltage Available Trip Settings Interrupt Supply Normal Range DLVI VDDD 1.71 V to 5.5 V 1.70 V to 5.45 V in 250 mV increments ALVI VDDA 1.71 V to 5.5 V 1.70 V to 5.45 V in 250 mV increments AHVI VDDA 1.71 V to 5.5 V 5.75 V The monitors are disabled until after IPOR. During sleep mode these circuits are periodically activated (buzzed). If an interrupt occurs during buzzing then the system first enters its wake up sequence. The interrupt is then recognized and may be serviced. The buzz frequency is adjustable, and should be set to be less than the minimum time that any voltage is expected to be out of range. For details on how to adjust the buzz frequency, see the TRM. 6.3.1.2 Other Reset Sources XRES - External Reset PSoC 3 has either a single GPIO pin that is configured as an external reset or a dedicated XRES pin. Either the dedicated XRES pin or the GPIO pin, if configured, holds the part in reset while held active (low). The response to an XRES is the same as to an IPOR reset. After XRES has been deasserted, at least 10 s must elapse before it can be reasserted. The external reset is active low. It includes an internal pull-up resistor. XRES is active during sleep and hibernate modes. SRES - Software Reset A reset can be commanded under program control by setting a bit in the software reset register. This is done either directly by the program or indirectly by DMA access. The response to a SRES is the same as after an IPOR reset. Another register bit exists to disable this function. WRES - Watchdog Timer Reset The watchdog reset detects when the software program is no longer being executed correctly. To indicate to the watchdog timer that it is running correctly, the program must periodically reset the timer. If the timer is not reset before a user-specified amount of time, then a reset is generated. Note IPOR disables the watchdog function. The program must enable the watchdog function at an appropriate point in the code by setting a register bit. When this bit is set, it cannot be cleared again except by an IPOR power-on reset event. Page 35 of 137 PSoC(R) 3: CY8C34 Family Datasheet Slew rate controlled digital output drive mode Access port control and configuration registers on either port basis or pin basis Separate port read (PS) and write (DR) data registers to avoid read modify write errors Special functionality on a pin by pin basis 6.4 I/O System and Routing PSoC I/Os are extremely flexible. Every GPIO has analog and digital I/O capability. All I/Os have a large number of drive modes, which are set at POR. PSoC also provides up to four individual I/O voltage domains through the VDDIO pins. There are two types of I/O pins on every device; those with USB provide a third type. Both General Purpose I/O (GPIO) and Special I/O (SIO) provide similar digital functionality. The primary differences are their analog capability and drive strength. Devices that include USB also provide two USBIO pins that support specific USB functionality as well as limited GPIO capability. All I/O pins are available for use as digital inputs and outputs for both the CPU and digital peripherals. In addition, all I/O pins can generate an interrupt. The flexible and advanced capabilities of the PSoC I/O, combined with any signal to any pin routability, greatly simplify circuit design and board layout. All GPIO pins can be used for analog input, CapSense[13], and LCD segment drive, while SIO pins are used for voltages in excess of VDDA and for programmable output voltages. Features supported by both GPIO and SIO: User programmable port reset state Separate I/O supplies and voltages for up to four groups of I/O Digital peripherals use DSI to connect the pins Input or output or both for CPU and DMA Eight drive modes Every pin can be an interrupt source configured as rising edge, falling edge or both edges. If required, level sensitive interrupts are supported through the DSI Dedicated port interrupt vector for each port Additional features only provided on the GPIO pins: LCD segment drive on LCD equipped devices CapSense[13] Analog input and output capability Continuous 100 A clamp current capability Standard drive strength down to 1.7 V Additional features only provided on SIO pins: Higher drive strength than GPIO Hot swap capability (5 V tolerance at any operating VDD) Programmable and regulated high input and output drive levels down to 1.2 V No analog input, CapSense, or LCD capability Over voltage tolerance up to 5.5 V SIO can act as a general purpose analog comparator USBIO features: Full speed USB 2.0 compliant I/O Highest drive strength for general purpose use Input, output, or both for CPU and DMA Input, output, or both for digital peripherals Digital output (CMOS) drive mode Each pin can be an interrupt source configured as rising edge, falling edge, or both edges Note 13. GPIOs with opamp outputs are not recommended for use with CapSense Document Number: 001-53304 Rev. *Z Page 36 of 137 PSoC(R) 3: CY8C34 Family Datasheet Figure 6-9. GPIO Block Diagram Digital Input Path Naming Convention `x' = Port Number `y' = Pin Number PRT[x]CTL PRT[x]DBL_SYNC_IN PRT[x]PS Digital System Input PICU[x]INTTYPE[y] Input Buffer Disable PICU[x]INTSTAT Interrupt Logic Pin Interrupt Signal PICU[x]INTSTAT Digital Output Path PRT[x]SLW PRT[x]SYNC_OUT Vddio Vddio PRT[x]DR 0 Digital System Output In 1 Vddio PRT[x]BYP Drive Logic PRT[x]DM2 PRT[x]DM1 PRT[x]DM0 Bidirectional Control PRT[x]BIE Analog Slew Cntl PIN OE 1 Capsense Global Control 0 1 0 1 CAPS[x]CFG1 Switches PRT[x]AG Analog Global PRT[x]AMUX Analog Mux LCD Display Data PRT[x]LCD_COM_SEG Logic & MUX PRT[x]LCD_EN LCD Bias Bus Document Number: 001-53304 Rev. *Z 5 Page 37 of 137 PSoC(R) 3: CY8C34 Family Datasheet Figure 6-10. SIO Input/Output Block Diagram Digital Input Path PRT[x]SIO_HYST_EN PRT[x]SIO_DIFF Reference Level PRT[x]DBL_SYNC_IN Naming Convention `x' = Port Number `y' = Pin Number Buffer Thresholds PRT[x]PS Digital System Input PICU[x]INTTYPE[y] Input Buffer Disable PICU[x]INTSTAT Interrupt Logic Pin Interrupt Signal PICU[x]INTSTAT Digital Output Path Reference Level PRT[x]SIO_CFG PRT[x]SLW PRT[x]SYNC_OUT PRT[x]DR Driver Vhigh 0 Digital System Output In 1 PRT[x]BYP Drive Logic PRT[x]DM2 PRT[x]DM1 PRT[x]DM0 Bidirectional Control PRT[x]BIE Slew Cntl PIN OE Figure 6-11. USBIO Block Diagram Digital Input Path Naming Convention `y' = Pin Number USB Receiver Circuitry PRT[15]DBL_SYNC_IN PRT[15]PS[6,7] USBIO_CR1[0,1] Digital System Input PICU[15]INTTYPE[y] PICU[15]INTSTAT Interrupt Logic Pin Interrupt Signal PICU[15]INTSTAT Digital Output Path PRT[15]SYNC_OUT USBIO_CR1[5] USB or I/O USBIO_CR1[2] Vddd USB SIE Control for USB Mode PRT[15]DR1[7,6] Digital System Output PRT[15]BYP 1 In Drive Logic D+ Open Drain PRT[15]DM0[7] D- Open Drain PRT[15]DM1[7] Document Number: 001-53304 Rev. *Z 0 PRT[15]DM0[6] PRT[15]DM1[6] D+ pin only D+ 1.5 k Vddd 5k Vddd Vddd 1.5 k PIN D+ 5 k D- 5 k Page 38 of 137 PSoC(R) 3: CY8C34 Family Datasheet if bypass mode is selected. Note that the actual I/O pin voltage is determined by a combination of the selected drive mode and the load at the pin. For example, if a GPIO pin is configured for resistive pull-up mode and driven high while the pin is floating, the voltage measured at the pin is a high logic state. If the same GPIO pin is externally tied to ground then the voltage unmeasured at the pin is a low logic state. 6.4.1 Drive Modes Each GPIO and SIO pin is individually configurable into one of the eight drive modes listed in Table 6-6. Three configuration bits are used for each pin (DM[2:0]) and set in the PRTxDM[2:0] registers. Figure 6-12 depicts a simplified pin view based on each of the eight drive modes. Table 6-6 shows the I/O pin's drive state based on the port data register value or digital array signal Figure 6-12. Drive Mode VDD Out In Pin Out In Pin Out In VDD Pin Out In Pin An An An An 0. High Impedance Analog 1. High Impedance Digital 2. Resistive Pull-Up 3. Resistive Pull-Down VDD Out In Pin Out In VDD Pin Out In VDD Pin Out In Pin An An An An 4. Open Drain, Drives Low 5. Open Drain, Drives High 6. Strong Drive 7. Resistive Pull-Up and Pull-Down The `Out' connection is driven from either the Digital System (when the Digital Output terminal is connected) or the Data Register (when HW connection is disabled). The `In' connection drives the Pin State register, and the Digital System if the Digital Input terminal is enabled and connected. The `An' connection connects to the Analog System. Table 6-6. Drive Modes Diagram Drive Mode PRTxDM2 PRTxDM1 PRTxDM0 PRTxDR = 1 PRTxDR = 0 0 High impedence analog 0 0 0 High Z High Z 1 High Impedance digital 0 0 1 High Z High Z pull-up[14] 2 Resistive 0 1 0 Res High (5K) Strong Low 3 Resistive pull-down[14] 0 1 1 Strong High Res Low (5K) 4 Open drain, drives low 1 0 0 High Z Strong Low 5 Open drain, drive high 1 0 1 Strong High High Z 6 Strong drive 1 1 0 Strong High Strong Low 7 Resistive pull-up and pull-down[14] 1 1 1 Res High (5K) Res Low (5K) Note 14. Resistive pull-up and pull-down are not available with SIO in regulated output mode. Document Number: 001-53304 Rev. *Z Page 39 of 137 PSoC(R) 3: CY8C34 Family Datasheet The USBIO pins (P15[7] and P15[6]), when enabled for I/O mode, have limited drive mode control. The drive mode is set using the PRT15.DM0[7, 6] register. A resistive pull option is also available at the USBIO pins, which can be enabled using the PRT15.DM1[7, 6] register. When enabled for USB mode, the drive mode control has no impact on the configuration of the USB pins. Unlike the GPIO and SIO configurations, the port wide configuration registers do not configure the USB drive mode bits. Table 6-7 shows the drive mode configuration for the USBIO pins. Table 6-7. USBIO Drive Modes (P15[7] and P15[6]) PRT15.DM1[7,6] Pull up enable PRT15.DM0[7,6] Drive Mode enable 0 0 High Z Strong Low Open Drain, Strong Low 0 1 Strong High Strong Low Strong Outputs 1 0 Res High (5k) Strong Low Resistive Pull Up, Strong Low 1 1 Strong High Strong Low Strong Outputs PRT15.DR[7,6] = 1 High impedance analog The default reset state with both the output driver and digital input buffer turned off. This prevents any current from flowing in the I/O's digital input buffer due to a floating voltage. This state is recommended for pins that are floating or that support an analog voltage. High impedance analog pins do not provide digital input functionality. To achieve the lowest chip current in sleep modes, all I/Os must either be configured to the high impedance analog mode, or have their pins driven to a power supply rail by the PSoC device or by external circuitry. High impedance digital The input buffer is enabled for digital signal input. This is the standard high impedance (High Z) state recommended for digital inputs. Resistive pull-up or resistive pull-down Resistive pull-up or pull-down, respectively, provides a series resistance in one of the data states and strong drive in the other. Pins can be used for digital input and output in these modes. Interfacing to mechanical switches is a common application for these modes. Resistive pull-up and pull-down are not available with SIO in regulated output mode. Open drain, drives high and open drain, drives low Open drain modes provide high impedance in one of the data states and strong drive in the other. Pins can be used for digital input and output in these modes. A common application for these modes is driving the I2C bus signal lines. Strong drive Provides a strong CMOS output drive in either high or low state. This is the standard output mode for pins. Strong Drive mode pins must not be used as inputs under normal circumstances. This mode is often used to drive digital output signals or external FETs. Document Number: 001-53304 Rev. *Z PRT15.DR[7,6] = 0 Description Resistive pull-up and pull-down Similar to the resistive pull-up and resistive pull-down modes except the pin is always in series with a resistor. The high data state is pull-up while the low data state is pull-down. This mode is most often used when other signals that may cause shorts can drive the bus. Resistive pull-up and pull-down are not available with SIO in regulated output mode. 6.4.2 Pin Registers Registers to configure and interact with pins come in two forms that may be used interchangeably. All I/O registers are available in the standard port form, where each bit of the register corresponds to one of the port pins. This register form is efficient for quickly reconfiguring multiple port pins at the same time. I/O registers are also available in pin form, which combines the eight most commonly used port register bits into a single register for each pin. This enables very fast configuration changes to individual pins with a single register write. 6.4.3 Bidirectional Mode High-speed bidirectional capability allows pins to provide both the high impedance digital drive mode for input signals and a second user selected drive mode such as strong drive (set using PRTxDM[2:0] registers) for output signals on the same pin, based on the state of an auxiliary control bus signal. The bidirectional capability is useful for processor busses and communications interfaces such as the SPI Slave MISO pin that requires dynamic hardware control of the output buffer. The auxiliary control bus routes up to 16 UDB or digital peripheral generated output enable signals to one or more pins. 6.4.4 Slew Rate Limited Mode GPIO and SIO pins have fast and slow output slew rate options for strong and open drain drive modes, not resistive drive modes. Because it results in reduced EMI, the slow edge rate option is recommended for signals that are not speed critical, generally less than 1 MHz. The fast slew rate is for signals between 1 MHz and 33 MHz. The slew rate is individually configurable for each pin, and is set by the PRTxSLW registers. Page 40 of 137 PSoC(R) 3: CY8C34 Family Datasheet 6.4.5 Pin Interrupts 6.4.9 CapSense All GPIO and SIO pins are able to generate interrupts to the system. All eight pins in each port interface to their own Port Interrupt Control Unit (PICU) and associated interrupt vector. Each pin of the port is independently configurable to detect rising edge, falling edge, both edge interrupts, or to not generate an interrupt. This section applies only to GPIO pins. All GPIO pins may be used to create CapSense buttons and sliders[15]. See the "CapSense" section on page 64 for more information. Depending on the configured mode for each pin, each time an interrupt event occurs on a pin, its corresponding status bit of the interrupt status register is set to "1" and an interrupt request is sent to the interrupt controller. Each PICU has its own interrupt vector in the interrupt controller and the pin status register providing easy determination of the interrupt source down to the pin level. Port pin interrupts remain active in all sleep modes allowing the PSoC device to wake from an externally generated interrupt. While level sensitive interrupts are not directly supported; Universal Digital Blocks (UDB) provide this functionality to the system when needed. 6.4.6 Input Buffer Mode GPIO and SIO input buffers can be configured at the port level for the default CMOS input thresholds or the optional LVTTL input thresholds. All input buffers incorporate Schmitt triggers for input hysteresis. Additionally, individual pin input buffers can be disabled in any drive mode. 6.4.7 I/O Power Supplies Up to four I/O pin power supplies are provided depending on the device and package. Each I/O supply must be less than or equal to the voltage on the chip's analog (VDDA) pin. This feature allows users to provide different I/O voltage levels for different pins on the device. Refer to the specific device package pinout to determine VDDIO capability for a given port and pin. 6.4.10 LCD Segment Drive This section applies only to GPIO pins. All GPIO pins may be used to generate Segment and Common drive signals for direct glass drive of LCD glass. See the "LCD Direct Drive" section on page 63 for details. 6.4.11 Adjustable Output Level This section applies only to SIO pins. SIO port pins support the ability to provide a regulated high output level for interface to external signals that are lower in voltage than the SIO's respective VDDIO. SIO pins are individually configurable to output either the standard VDDIO level or the regulated output, which is based on an internally generated reference. Typically a voltage DAC (VDAC) is used to generate the reference (see Figure 6-13). The "DAC" section on page 64 has more details on VDAC use and reference routing to the SIO pins. Resistive pull-up and pull-down drive modes are not available with SIO in regulated output mode. 6.4.12 Adjustable Input Level This section applies only to SIO pins. SIO pins by default support the standard CMOS and LVTTL input levels but also support a differential mode with programmable levels. SIO pins are grouped into pairs. Each pair shares a reference generator block which, is used to set the digital input buffer reference level for interface to external signals that differ in voltage from VDDIO. The reference sets the pins voltage threshold for a high logic level (see Figure 6-13). Available input thresholds are: 0.5 VDDIO The SIO port pins support an additional regulated high output capability, as described in Adjustable Output Level. 0.4 VDDIO 6.4.8 Analog Connections VREF These connections apply only to GPIO pins. All GPIO pins may be used as analog inputs or outputs. The analog voltage present on the pin must not exceed the VDDIO supply voltage to which the GPIO belongs. Each GPIO may connect to one of the analog global busses or to one of the analog mux buses to connect any pin to any internal analog resource such as ADC or comparators. In addition, select pins provide direct connections to specific analog features such as the high current DACs or uncommitted opamps. Typically a voltage DAC (VDAC) generates the VREF reference. "DAC" section on page 64 has more details on VDAC use and reference routing to the SIO pins. 0.5 VREF Note 15. GPIOs with opamp outputs are not recommended for use with CapSense Document Number: 001-53304 Rev. *Z Page 41 of 137 PSoC(R) 3: CY8C34 Family Datasheet There are no current limitations for the SIO pins as they present a Figure 6-13. SIO Reference for Input and Output high impedance load to the external circuit where VDDIO < VIN < 5.5 V. Input Path The GPIO pins must be limited to 100 A using a current limiting Digital Input resistor. GPIO pins clamp the pin voltage to approximately one diode above the Vddio supply where Vddio < VIN < VDDA. Vinref In case of a GPIO pin configured for analog input/output, the analog voltage on the pin must not exceed the Vddio supply voltage to which the GPIO belongs. Reference Generator SIO_Ref PIN Voutref Output Path Driver Vhigh Digital Output Drive Logic A common application for this feature is connection to a bus such as I2C where different devices are running from different supply voltages. In the I2C case, the PSoC chip is configured into the Open Drain, Drives Low mode for the SIO pin. This allows an external pull-up to pull the I2C bus voltage above the PSoC pin supply. For example, the PSoC chip could operate at 1.8 V, and an external device could run from 5 V. Note that the SIO pin's VIH and VIL levels are determined by the associated Vddio supply pin. The SIO pin must be in one of the following modes: 0 (high impedance analog), 1 (high impedance digital), or 4 (open drain drives low). See Figure 6-12 for details. Absolute maximum ratings for the device must be observed for all I/O pins. 6.4.16 Reset Configuration 6.4.13 SIO as Comparator This section applies only to SIO pins. The adjustable input level feature of the SIOs as explained in the Adjustable Input Level section can be used to construct a comparator. The threshold for the comparator is provided by the SIO's reference generator. The reference generator has the option to set the analog signal routed through the analog global line as threshold for the comparator. Note that a pair of SIO pins share the same threshold. While reset is active all I/Os are reset to and held in the High Impedance Analog state. After reset is released, the state can be reprogrammed on a port-by-port basis to pull-down or pull-up. To ensure correct reset operation, the port reset configuration data is stored in special nonvolatile registers. The stored reset data is automatically transferred to the port reset configuration registers at reset release. 6.4.17 Low-Power Functionality In all low-power modes the I/O pins retain their state until the part is awakened and changed or reset. To awaken the part, use a pin interrupt, because the port interrupt logic continues to function in all low-power modes. The digital input path in Figure 6-10 on page 38 illustrates this functionality. In the figure, `Reference level' is the analog signal routed through the analog global. The hysteresis feature can also be enabled for the input buffer of the SIO, which increases noise immunity for the comparator. 6.4.18 Special Pin Functionality 6.4.14 Hot Swap Digital This section applies only to SIO pins. SIO pins support `hot swap' capability to plug into an application without loading the signals that are connected to the SIO pins even when no power is applied to the PSoC device. This allows the unpowered PSoC to maintain a high impedance load to the external device while also preventing the PSoC from being powered through a SIO pin's protection diode. Powering the device up or down while connected to an operational I2C bus may cause transient states on the SIO pins. The overall I2C bus design should take this into account. 6.4.15 Over Voltage Tolerance All I/O pins provide an over voltage tolerance feature at any operating VDD. Document Number: 001-53304 Rev. *Z Some pins on the device include additional special functionality in addition to their GPIO or SIO functionality. The specific special function pins are listed in Pinouts on page 6. The special features are: 4 to 25 MHz crystal oscillator 32.768-kHz crystal oscillator 2 Wake from sleep on I C address match. Any pin can be used for I2C if wake from sleep is not required. JTAG interface pins SWD interface pins SWV interface pins External reset Analog Opamp inputs and outputs High current IDAC outputs External reference inputs Page 42 of 137 PSoC(R) 3: CY8C34 Family Datasheet 6.4.19 JTAG Boundary Scan 7.1 Example Peripherals The device supports standard JTAG boundary scan chains on all I/O pins for board level test. The flexibility of the CY8C34 family's Universal Digital Blocks (UDBs) and Analog Blocks allow the user to create a wide range of components (peripherals). The most common peripherals were built and characterized by Cypress and are shown in the PSoC Creator component catalog, however, users may also create their own custom components using PSoC Creator. Using PSoC Creator, users may also create their own components for reuse within their organization, for example sensor interfaces, proprietary algorithms, and display interfaces. 7. Digital Subsystem The digital programmable system creates application specific combinations of both standard and advanced digital peripherals and custom logic functions. These peripherals and logic are then interconnected to each other and to any pin on the device, providing a high level of design flexibility and IP security. The features of the digital programmable system are outlined here to provide an overview of capabilities and architecture. You do not need to interact directly with the programmable digital system at the hardware and register level. PSoC Creator provides a high level schematic capture graphical interface to automatically place and route resources similar to PLDs. The main components of the digital programmable system are: Universal Digital Blocks (UDB) - These form the core functionality of the digital programmable system. UDBs are a collection of uncommitted logic (PLD) and structural logic (Datapath) optimized to create all common embedded peripherals and customized functionality that are application or design specific. Universal Digital Block Array - UDB blocks are arrayed within a matrix of programmable interconnect. The UDB array structure is homogeneous and allows for flexible mapping of digital functions onto the array. The array supports extensive and flexible routing interconnects between UDBs and the Digital System Interconnect. Digital System Interconnect (DSI) - Digital signals from Universal Digital Blocks (UDBs), fixed function peripherals, I/O pins, interrupts, DMA, and other system core signals are attached to the Digital System Interconnect to implement full featured device connectivity. The DSI allows any digital function to any pin or other feature routability when used with the Universal Digital Block Array. Figure 7-1. CY8C34 Digital Programmable Architecture DSI Routing Interface UDB UDB UDB UDB UDB UDB UDB UDB UDB UDB UDB UDB UDB UDB UDB UDB UDB UDB UDB UDB UDB UDB UDB UDB 7.1.1 Example Digital Components The following is a sample of the digital components available in PSoC Creator for the CY8C34 family. The exact amount of hardware resources (UDBs, routing, RAM, flash) used by a component varies with the features selected in PSoC Creator for the component. Communications I2C UART SPI Functions EMIF PWMs Timers Counters Logic NOT OR XOR AND 7.1.2 Example Analog Components The following is a sample of the analog components available in PSoC Creator for the CY8C34 family. The exact amount of hardware resources (SC/CT blocks, routing, RAM, flash) used by a component varies with the features selected in PSoC Creator for the component. Amplifiers TIA PGA opamp UDB Array ADC DSI Routing Interface Digital Core System and Fixed Function Peripherals I/O Port UDB Array I/O Port I/O Port I/O Port Digital Core System and Fixed Function Peripherals The number of components available through PSoC Creator is too numerous to list in the data sheet, and the list is always growing. An example of a component available for use in CY8C34 family, but, not explicitly called out in this data sheet is the UART component. Delta-Sigma DACs Current Voltage PWM Comparators Mixers Document Number: 001-53304 Rev. *Z Page 43 of 137 PSoC(R) 3: CY8C34 Family Datasheet 7.1.3 Example System Function Components 7.1.4.2 Component Catalog The following is a sample of the system function components available in PSoC Creator for the CY8C34 family. The exact amount of hardware resources (UDBs, SC/CT blocks, routing, RAM, flash) used by a component varies with the features selected in PSoC Creator for the component. The component catalog is a repository of reusable design elements that select device functionality and customize your PSoC device. It is populated with an impressive selection of content; from simple primitives such as logic gates and device registers, through the digital timers, counters and PWMs, plus analog components such as ADC, DACs, and filters, and communication protocols, such as I2C, USB, and CAN. See Example Peripherals on page 43 for more details about available peripherals. All content is fully characterized and carefully documented in data sheets with code examples, AC/DC specifications, and user code ready APIs. CapSense LCD Drive LCD Control 7.1.4 Designing with PSoC Creator 7.1.4.1 More Than a Typical IDE A successful design tool allows for the rapid development and deployment of both simple and complex designs. It reduces or eliminates any learning curve. It makes the integration of a new design into the production stream straightforward. PSoC Creator is that design tool. PSoC Creator is a full featured Integrated Development Environment (IDE) for hardware and software design. It is optimized specifically for PSoC devices and combines a modern, powerful software development platform with a sophisticated graphical design tool. This unique combination of tools makes PSoC Creator the most flexible embedded design platform available. Graphical design entry simplifies the task of configuring a particular part. You can select the required functionality from an extensive catalog of components and place it in your design. All components are parameterized and have an editor dialog that allows you to tailor functionality to your needs. PSoC Creator automatically configures clocks and routes the I/O to the selected pins and then generates APIs to give the application complete control over the hardware. Changing the PSoC device configuration is as simple as adding a new component, setting its parameters, and rebuilding the project. At any stage of development you are free to change the hardware configuration and even the target processor. To retarget your application (hardware and software) to new devices, even from 8- to 32-bit families, just select the new device and rebuild. You also have the ability to change the C compiler and evaluate an alternative. Components are designed for portability and are validated against all devices, from all families, and against all supported tool chains. Switching compilers is as easy as editing the from the project options and rebuilding the application with no errors from the generated APIs or boot code. Document Number: 001-53304 Rev. *Z 7.1.4.3 Design Reuse The symbol editor gives you the ability to develop reusable components that can significantly reduce future design time. Just draw a symbol and associate that symbol with your proven design. PSoC Creator allows for the placement of the new symbol anywhere in the component catalog along with the content provided by Cypress. You can then reuse your content as many times as you want, and in any number of projects, without ever having to revisit the details of the implementation. 7.1.4.4 Software Development Anchoring the tool is a modern, highly customizable user interface. It includes project management and integrated editors for C and assembler source code, as well the design entry tools. Project build control leverages compiler technology from top commercial vendors such as ARM(R) Limited, KeilTM, and CodeSourcery (GNU). Free versions of Keil C51 and GNU C Compiler (GCC) for ARM, with no restrictions on code size or end product distribution, are included with the tool distribution. Upgrading to more optimizing compilers is a snap with support for the professional Keil C51 product and ARM RealViewTM compiler. 7.1.4.5 Nonintrusive Debugging With JTAG (4-wire) and SWD (2-wire) debug connectivity available on all devices, the PSoC Creator debugger offers full control over the target device with minimum intrusion. Breakpoints and code execution commands are all readily available from toolbar buttons and an impressive lineup of windows--register, locals, watch, call stack, memory and peripherals--make for an unparalleled level of visibility into the system. PSoC Creator contains all the tools necessary to complete a design, and then to maintain and extend that design for years to come. All steps of the design flow are carefully integrated and optimized for ease-of-use and to maximize productivity. Page 44 of 137 PSoC(R) 3: CY8C34 Family Datasheet Status and Control Module - The primary role of this block is 7.2 Universal Digital Block The Universal Digital Block (UDB) represents an evolutionary step to the next generation of PSoC embedded digital peripheral functionality. The architecture in first generation PSoC digital blocks provides coarse programmability in which a few fixed functions with a small number of options are available. The new UDB architecture is the optimal balance between configuration granularity and efficient implementation. A cornerstone of this approach is to provide the ability to customize the devices digital operation to match application requirements. Figure 7-3. PLD 12C4 Structure PT4 PT5 PT6 PT7 Status and Control The primary purpose of the PLD blocks is to implement logic expressions, state machines, sequencers, lookup tables, and decoders. In the simplest use model, consider the PLD blocks as a standalone resource onto which general purpose RTL is synthesized and mapped. The more common and efficient use model is to create digital functions from a combination of PLD and datapath blocks, where the PLD implements only the random logic and state portion of the function while the datapath (ALU) implements the more structured elements. PT3 Clock and Reset Control PLD 12C4 (8 PTs) PLD 12C4 (8 PTs) 7.2.1 PLD Module PT2 PLD Chaining and reset selection and control. PT1 Figure 7-2. UDB Block Diagram Clock and Reset Module - This block provides the UDB clocks PT0 To achieve this, UDBs consist of a combination of uncommitted logic (PLD), structured logic (Datapath), and a flexible routing scheme to provide interconnect between these elements, I/O connections, and other peripherals. UDB functionality ranges from simple self contained functions that are implemented in one UDB, or even a portion of a UDB (unused resources are available for other functions), to more complex functions that require multiple UDBs. Examples of basic functions are timers, counters, CRC generators, PWMs, dead band generators, and communications functions, such as UARTs, SPI, and I2C. Also, the PLD blocks and connectivity provide full featured general purpose programmable logic within the limits of the available resources. to provide a way for CPU firmware to interact and synchronize with UDB operation. IN0 TC TC TC TC TC TC TC TC IN1 TC TC TC TC TC TC TC TC IN2 TC TC TC TC TC TC TC TC IN3 TC TC TC TC TC TC TC TC IN4 TC TC TC TC TC TC TC TC IN5 TC TC TC TC TC TC TC TC IN6 TC TC TC TC TC TC TC TC IN7 TC TC TC TC TC TC TC TC IN8 TC TC TC TC TC TC TC TC IN9 TC TC TC TC TC TC TC TC IN10 TC TC TC TC TC TC TC TC IN11 TC TC TC TC TC TC TC TC AND Array Carry In Datapath Datapath Chaining Routing Channel The main component blocks of the UDB are: PLD blocks - There are two small PLDs per UDB. These blocks take inputs from the routing array and form registered or combinational sum-of-products logic. PLDs are used to implement state machines, state bits, and combinational logic equations. PLD configuration is automatically generated from graphical primitives. Datapath Module - This 8-bit wide datapath contains structured logic to implement a dynamically configurable ALU, a variety of compare configurations and condition generation. This block also contains input/output FIFOs, which are the primary parallel data interface between the CPU/DMA system and the UDB. Document Number: 001-53304 Rev. *Z T T T T T T T T MC0 OUT0 T T T T T T T T MC1 OUT1 T T T T T T T T MC2 OUT2 T T T T T T T T MC3 OUT3 OR Array Carry Out One 12C4 PLD block is shown in Figure 7-3. This PLD has 12 inputs, which feed across eight product terms. Each product term (AND function) can be from 1 to 12 inputs wide, and in a given product term, the true (T) or complement (C) of each input can be selected. The product terms are summed (OR function) to create the PLD outputs. A sum can be from 1 to 8 product terms wide. The 'C' in 12C4 indicates that the width of the OR gate (in this case 8) is constant across all outputs (rather than variable as in a 22V10 device). This PLA like structure gives maximum flexibility and insures that all inputs and outputs are permutable for ease of allocation by the software tools. There are two 12C4 PLDs in each UDB. Page 45 of 137 PSoC(R) 3: CY8C34 Family Datasheet 7.2.2 Datapath Module The datapath contains an 8-bit single cycle ALU, with associated compare and condition generation logic. This datapath block is optimized to implement embedded functions, such as timers, counters, integrators, PWMs, PRS, CRC, shifters and dead band generators and many others. Figure 7-4. Datapath Top Level PHUB System Bus R/W Access to All Registers F0 D1 Data Registers A0 A1 D0 D1 D0 To/From Previous Datapath A1 Conditions: 2 Compares, 2 Zero Detect, 2 Ones Detect Overflow Detect 6 FIFOs Datapath Control Input from Programmable Routing Input Muxes Dynamic Configuration RAM 8 Word X 16 Bit F1 Chaining Output Muxes 6 Output to Programmable Routing To/From Next Datapath Accumulators A0 PI Parallel Input/Output (To/From Programmable Routing) PO ALU Shift Mask 7.2.2.1 Working Registers 7.2.2.2 Dynamic Configuration RAM The datapath contains six primary working registers, which are accessed by CPU firmware or DMA during normal operation. Dynamic configuration is the ability to change the datapath function and internal configuration on a cycle-by-cycle basis, under sequencer control. This is implemented using the 8-word x 16-bit configuration RAM, which stores eight unique 16-bit wide configurations. The address input to this RAM controls the sequence, and can be routed from any block connected to the UDB routing matrix, most typically PLD logic, I/O pins, or from the outputs of this or other datapath blocks. Table 7-1. Working Datapath Registers Name Function Description A0 and A1 Accumulators These are sources and sinks for the ALU and also sources for the compares. D0 and D1 Data Registers These are sources for the ALU and sources for the compares. F0 and F1 These are the primary interface to the system bus. They can be a data source for the data registers and accumulators or they can capture data from the accumulators or ALU. Each FIFO is four bytes deep. FIFOs Document Number: 001-53304 Rev. *Z ALU The ALU performs eight general purpose functions. They are: Increment Decrement Add Subtract Logical AND Page 46 of 137 PSoC(R) 3: CY8C34 Family Datasheet Logical OR Logical XOR Figure 7-5. Example FIFO Configurations System Bus System Bus Pass, used to pass a value through the ALU to the shift register, mask, or another UDB register F0 F0 F1 D0 A0 D1 A1 Independent of the ALU operation, these functions are available: Shift left D0/D1 A0/A1/ALU A0/A1/ALU A0/A1/ALU F1 F0 F1 Shift right Nibble swap Bitwise OR mask 7.2.2.3 Conditionals Each datapath has two compares, with bit masking options. Compare operands include the two accumulators and the two data registers in a variety of configurations. Other conditions include zero detect, all ones detect, and overflow. These conditions are the primary datapath outputs, a selection of which can be driven out to the UDB routing matrix. Conditional computation can use the built in chaining to neighboring UDBs to operate on wider data widths without the need to use routing resources. 7.2.2.4 Variable MSB The most significant bit of an arithmetic and shift function can be programmatically specified. This supports variable width CRC and PRS functions, and in conjunction with ALU output masking, can implement arbitrary width timers, counters and shift blocks. 7.2.2.5 Built in CRC/PRS The datapath has built in support for single cycle Cyclic Redundancy Check (CRC) computation and Pseudo Random Sequence (PRS) generation of arbitrary width and arbitrary polynomial. CRC/PRS functions longer than 8 bits may be implemented in conjunction with PLD logic, or built in chaining may be use to extend the function into neighboring UDBs. 7.2.2.6 Input/Output FIFOs Each datapath contains two four-byte deep FIFOs, which can be independently configured as an input buffer (system bus writes to the FIFO, datapath internal reads the FIFO), or an output buffer (datapath internal writes to the FIFO, the system bus reads from the FIFO). The FIFOs generate status that are selectable as datapath outputs and can therefore be driven to the routing, to interact with sequencers, interrupts, or DMA. System Bus System Bus TX/RX Dual Capture Dual Buffer 7.2.2.7 Chaining The datapath can be configured to chain conditions and signals such as carries and shift data with neighboring datapaths to create higher precision arithmetic, shift, CRC/PRS functions. 7.2.2.8 Time Multiplexing In applications that are over sampled, or do not need high clock rates, the single ALU block in the datapath can be efficiently shared with two sets of registers and condition generators. Carry and shift out data from the ALU are registered and can be selected as inputs in subsequent cycles. This provides support for 16-bit functions in one (8-bit) datapath. 7.2.2.9 Datapath I/O There are six inputs and six outputs that connect the datapath to the routing matrix. Inputs from the routing provide the configuration for the datapath operation to perform in each cycle, and the serial data inputs. Inputs can be routed from other UDB blocks, other device peripherals, device I/O pins, and so on. The outputs to the routing can be selected from the generated conditions, and the serial data outputs. Outputs can be routed to other UDB blocks, device peripherals, interrupt and DMA controller, I/O pins, and so on. 7.2.3 Status and Control Module The primary purpose of this circuitry is to coordinate CPU firmware interaction with internal UDB operation. Figure 7-6. Status and Control Registers System Bus 8-bit Status Register (Read Only) 8-bit Control Register (Write/Read) Routing Channel Document Number: 001-53304 Rev. *Z Page 47 of 137 PSoC(R) 3: CY8C34 Family Datasheet The bits of the control register, which may be written to by the system bus, are used to drive into the routing matrix, and thus provide firmware with the opportunity to control the state of UDB processing. The status register is read-only and it allows internal UDB state to be read out onto the system bus directly from internal routing. This allows firmware to monitor the state of UDB processing. Each bit of these registers has programmable connections to the routing matrix and routing connections are made depending on the requirements of the application. Figure 7-7. Digital System Interface Structure System Connections HV B UDB 7.2.3.1 Usage Examples As an example of control input, a bit in the control register can be allocated as a function enable bit. There are multiple ways to enable a function. In one method the control bit output would be routed to the clock control block in one or more UDBs and serve as a clock enable for the selected UDB blocks. A status example is a case where a PLD or datapath block generated a condition, such as a "compare true" condition that is captured and latched by the status register and then read (and cleared) by CPU firmware. 7.2.3.2 Clock Generation Each subcomponent block of a UDB including the two PLDs, the datapath, and Status and Control, has a clock selection and control block. This promotes a fine granularity with respect to allocating clocking resources to UDB component blocks and allows unused UDB resources to be used by other functions for maximum system efficiency. HV A UDB HV A HV B UDB HV B HV A UDB HV A HV B UDB UDB UDB UDB UDB UDB UDB UDB HV B UDB HV A UDB HV A HV B UDB HV B HV A UDB HV A HV B System Connections 7.3 UDB Array Description Figure 7-7 shows an example of a 16 UDB array. In addition to the array core, there are a DSI routing interfaces at the top and bottom of the array. Other interfaces that are not explicitly shown include the system interfaces for bus and clock distribution. The UDB array includes multiple horizontal and vertical routing channels each comprised of 96 wires. The wire connections to UDBs, at horizontal/vertical intersection and at the DSI interface are highly permutable providing efficient automatic routing in PSoC Creator. Additionally the routing allows wire by wire segmentation along the vertical and horizontal routing to further increase routing flexibility and capability. Document Number: 001-53304 Rev. *Z 7.3.1 UDB Array Programmable Resources Figure 7-8 shows an example of how functions are mapped into a bank of 16 UDBs. The primary programmable resources of the UDB are two PLDs, one datapath and one status/control register. These resources are allocated independently, because they have independently selectable clocks, and therefore unused blocks are allocated to other unrelated functions. An example of this is the 8-bit Timer in the upper left corner of the array. This function only requires one datapath in the UDB, and therefore the PLD resources may be allocated to another function. A function such as a Quadrature Decoder may require more PLD logic than one UDB can supply and in this case can utilize the unused PLD blocks in the 8-bit Timer UDB. Programmable resources in the UDB array are generally homogeneous so functions can be mapped to arbitrary boundaries in the array. Page 48 of 137 PSoC(R) 3: CY8C34 Family Datasheet Figure 7-8. Function Mapping Example in a Bank of UDBs 8-Bit Timer UDB Sequencer Quadrature Decoder UDB HV A 16-Bit PWM HV B Timer Counters 16-Bit PYRS UDB Figure 7-9. Digital System Interconnect CAN Interrupt Controller I2C DMA Controller IO Port Pins Global Clocks UDB HV A HV B Digital System Routing I/F UDB UDB UDB 8-Bit Timer Logic UDB 8-Bit SPI I2C Slave UDB ARRAY 12-Bit SPI UDB UDB UDB UDB Digital System Routing I/F HV B HV A HV B HV A Logic UDB UDB UART UDB UDB 12-Bit PWM 7.4 DSI Routing Interface Description The DSI routing interface is a continuation of the horizontal and vertical routing channels at the top and bottom of the UDB array core. It provides general purpose programmable routing between device peripherals, including UDBs, I/Os, analog peripherals, interrupts, DMA and fixed function peripherals. Figure 7-9 illustrates the concept of the digital system interconnect, which connects the UDB array routing matrix with other device peripherals. Any digital core or fixed function peripheral that needs programmable routing is connected to this interface. Signals in this category include: Global Clocks IO Port Pins EMIF Del-Sig SC/CT Blocks DACs Interrupt and DMA routing is very flexible in the CY8C34 programmable architecture. In addition to the numerous fixed function peripherals that can generate interrupt requests, any data signal in the UDB array routing can also be used to generate a request. A single peripheral may generate multiple independent interrupt requests simplifying system and firmware design. Figure 7-10 shows the structure of the IDMUX (Interrupt/DMA Multiplexer). Figure 7-10. Interrupt and DMA Processing in the IDMUX Interrupt and DMA Processing in IDMUX Fixed Function IRQs 0 Interrupt requests from all digital peripherals in the system. 1 DMA requests from all digital peripherals in the system. IRQs Digital peripheral data signals that need flexible routing to I/Os. UDB Array Digital peripheral data signals that need connections to UDBs. 2 Edge Detect Connection to analog system digital signals. Document Number: 001-53304 Rev. *Z Interrupt Controller 3 DRQs DMA termout (IRQs) Connections to the interrupt and DMA controllers. Connection to I/O pins. Comparators 0 Fixed Function DRQs 1 Edge Detect DMA Controller 2 Page 49 of 137 PSoC(R) 3: CY8C34 Family Datasheet 7.4.1 I/O Port Routing There are a total of 20 DSI routes to a typical 8-bit I/O port, 16 for data and four for drive strength control. When an I/O pin is connected to the routing, there are two primary connections available, an input and an output. In conjunction with drive strength control, this can implement a bidirectional I/O pin. A data output signal has the option to be single synchronized (pipelined) and a data input signal has the option to be double synchronized. The synchronization clock is the master clock (see Figure 6-1). Normally all inputs from pins are synchronized as this is required if the CPU interacts with the signal or any signal derived from it. Asynchronous inputs have rare uses. An example of this is a feed through of combinational PLD logic from input pins to output pins. There are four more DSI connections to a given I/O port to implement dynamic output enable control of pins. This connectivity gives a range of options, from fully ganged 8-bits controlled by one signal, to up to four individually controlled pins. The output enable signal is useful for creating tri-state bidirectional pins and buses. Figure 7-13. I/O Pin Output Enable Connectivity 4 IO Control Signal Connections from UDB Array Digital System Interface Figure 7-11. I/O Pin Synchronization Routing DO OE PIN 0 DI OE PIN1 OE PIN2 OE PIN3 OE PIN4 OE PIN5 OE PIN6 OE PIN7 Port i Figure 7-12. I/O Pin Output Connectivity 7.5 CAN 8 IO Data Output Connections from the UDB Array Digital System Interface DO PIN 0 DO PIN1 DO PIN2 DO PIN3 DO PIN4 DO PIN5 Port i Document Number: 001-53304 Rev. *Z DO PIN6 DO PIN7 The CAN peripheral is a fully functional Controller Area Network (CAN) supporting communication baud rates up to 1 Mbps. The CAN controller implements the CAN2.0A and CAN2.0B specifications as defined in the Bosch specification and conforms to the ISO-11898-1 standard. The CAN protocol was originally designed for automotive applications with a focus on a high level of fault detection. This ensures high communication reliability at a low cost. Because of its success in automotive applications, CAN is used as a standard communication protocol for motion oriented machine control networks (CANOpen) and factory automation applications (DeviceNet). The CAN controller features allow the efficient implementation of higher level protocols without affecting the performance of the microcontroller CPU. Full configuration support is provided in PSoC Creator. Page 50 of 137 PSoC(R) 3: CY8C34 Family Datasheet Figure 7-14. CAN Bus System Implementation CAN Node 1 CAN Node 2 CAN Node n PSoC CAN Drivers CAN Controller En Tx Rx CAN Transceiver CAN_H CAN_L CAN_H CAN_L CAN_H CAN_L CAN Bus 7.5.1 CAN Features CAN2.0A/B protocol implementation - ISO 11898 compliant Standard and extended frames with up to 8 bytes of data per frame Message filter capabilities Remote Transmission Request (RTR) support Programmable bit rate up to 1 Mbps Listen Only mode SW readable error counter and indicator Sleep mode: Wake the device from sleep with activity on the Rx pin Supports two or three wire interface to external transceiver (Tx, Rx, and Enable). The three-wire interface is compatible with the Philips PHY; the PHY is not included on-chip. The three wires can be routed to any I/O Enhanced interrupt controller CAN receive and transmit buffers status CAN controller error status including BusOff Document Number: 001-53304 Rev. *Z Receive path 16 receive buffers each with its own message filter Enhanced hardware message filter implementation that covers the ID, IDE and RTR DeviceNet addressing support Multiple receive buffers linkable to build a larger receive message array Automatic transmission request (RTR) response handler Lost received message notification Transmit path Eight transmit buffers Programmable transmit priority * Round robin * Fixed priority Message transmissions abort capability 7.5.2 Software Tools Support CAN Controller configuration integrated into PSoC Creator: CAN Configuration walkthrough with bit timing analyzer Receive filter setup Page 51 of 137 PSoC(R) 3: CY8C34 Family Datasheet Figure 7-15. CAN Controller Block Diagram TxMessage0 TxReq TxAbort Tx Buffer Status TxReq Pending TxMessage1 TxReq TxAbort Bit Timing Priority Arbiter TxMessage6 TxReq TxAbort TxInterrupt Request (if enabled) TxMessage7 TxReq TxAbort RxInterrupt Request (if enabled) Tx CRC Generator Error Status Error Active Error Passive Bus Off Tx Error Counter Rx Error Counter RTR RxMessages 0-15 Rx Buffer Status RxMessage Available Tx CAN Framer RxMessage0 Acceptance Code 0 Acceptance Mask 0 RxMessage1 Acceptance Code 1 Acceptance Mask 1 RxMessage Handler RxMessage14 Acceptance Code 14 Acceptance Mask 14 RxMessage15 Acceptance Code 15 Acceptance Mask 15 ErrInterrupt Request (if enabled) Rx CAN Framer Rx CRC Check WakeUp Request Error Detection CRC Form ACK Bit Stuffing Bit Error Overload Arbitration 7.6 USB Internal 48 MHz main oscillator mode that auto locks to USB PSoC includes a dedicated Full-Speed (12 Mbps) USB 2.0 transceiver supporting all four USB transfer types: control, interrupt, bulk, and isochronous. PSoC Creator provides full configuration support. USB interfaces to hosts through two dedicated USBIO pins, which are detailed in the "I/O System and Routing" section on page 36. Interrupts on bus and each endpoint event, with device wakeup USB includes the following features: bus clock, requiring no external crystal for USB (USB equipped parts only) USB Reset, Suspend, and Resume operations Bus powered and self powered modes Figure 7-16. USB Eight unidirectional data endpoints Arbiter Shared 512-byte buffer for the eight data endpoints Dedicated 8-byte buffer for EP0 Three memory modes Manual Memory Management with No DMA Access Manual Memory Management with Manual DMA Access Automatic Memory Management with Automatic DMA Access System Bus One bidirectional control endpoint 0 (EP0) 512 X 8 SRAM D+ SIE (Serial Interface Engine) Interrupts External 22 Resistors USB I/O D- 48 MHz IMO Internal 3.3-V regulator for transceiver Document Number: 001-53304 Rev. *Z Page 52 of 137 PSoC(R) 3: CY8C34 Family Datasheet 7.7 Timers, Counters, and PWMs Timer/Counter/PWM features include: The Timer/Counter/PWM peripheral is a 16-bit dedicated peripheral providing three of the most common embedded peripheral features. As almost all embedded systems use some combination of timers, counters, and PWMs. Four of them have been included on this PSoC device family. Additional and more advanced functionality timers, counters, and PWMs can also be instantiated in Universal Digital Blocks (UDBs) as required. PSoC Creator allows you to choose the timer, counter, and PWM features that they require. The tool set utilizes the most optimal resources available. 16-bit Timer/Counter/PWM (down count only) The Timer/Counter/PWM peripheral can select from multiple clock sources, with input and output signals connected through the DSI routing. DSI routing allows input and output connections to any device pin and any internal digital signal accessible through the DSI. Each of the four instances has a compare output, terminal count output (optional complementary compare output), and programmable interrupt request line. The Timer/Counter/PWMs are configurable as free running, one shot, or Enable input controlled. The peripheral has timer reset and capture inputs, and a kill input for control of the comparator outputs. The peripheral supports full 16-bit capture. Document Number: 001-53304 Rev. *Z Selectable clock source PWM comparator (configurable for LT, LTE, EQ, GTE, GT) Period reload on start, reset, and terminal count Interrupt on terminal count, compare true, or capture Dynamic counter reads Timer capture mode Count while enable signal is asserted mode Free run mode One Shot mode (stop at end of period) Complementary PWM outputs with deadband PWM output kill Figure 7-17. Timer/Counter/PWM Clock Reset Enable Capture Kill Timer / Counter / PWM 16-bit IRQ TC / Compare! Compare Page 53 of 137 PSoC(R) 3: CY8C34 Family Datasheet 7.8 I2C I2C features include: PSoC includes a single fixed-function I2C peripheral. Additional I2C interfaces can be instantiated using Universal Digital Blocks (UDBs) in PSoC Creator, as required. Slave and Master, Transmitter, and Receiver operation The I2C peripheral provides a synchronous two-wire interface designed to interface the PSoC device with a two-wire I2C serial communication bus. It is compatible[16] with I2C Standard-mode, Fast-mode, and Fast-mode Plus devices as defined in the NXP I2C-bus specification and user manual (UM10204). The I2C bus I/O may be implemented with GPIO or SIO in open-drain modes. Interrupt or polling CPU interface To eliminate the need for excessive CPU intervention and overhead, I2C specific support is provided for status detection and generation of framing bits. I2C operates as a slave, a master, or multimaster (Slave and Master)[17]. In slave mode, the unit always listens for a start condition to begin sending or receiving data. Master mode supplies the ability to generate the Start and Stop conditions and initiate transactions. Multimaster mode provides clock synchronization and arbitration to allow multiple masters on the same bus. If Master mode is enabled and Slave mode is not enabled, the block does not generate interrupts on externally generated Start conditions. I2C interfaces through DSI routing and allows direct connections to any GPIO or SIO pins. I2C provides hardware address detect of a 7-bit address without CPU intervention. Additionally the device can wake from low-power modes on a 7-bit hardware address match. If wakeup functionality is required, I2C pin connections are limited to one of two specific pairs of SIO pins. See descriptions of SCL and SDA pins in Pin Descriptions on page 11. Byte processing for low CPU overhead Support for bus speeds up to 1 Mbps 7 or 10-bit addressing (10-bit addressing requires firmware support) SMBus operation (through firmware support - SMBus supported in hardware in UDBs) 7-bit hardware address compare Wake from low-power modes on address match Glitch filtering (active and alternate-active modes only) Data transfers follow the format shown in Figure 7-18. After the START condition (S), a slave address is sent. This address is 7 bits long followed by an eighth bit which is a data direction bit (R/W) - a 'zero' indicates a transmission (WRITE), a 'one' indicates a request for data (READ). A data transfer is always terminated by a STOP condition (P) generated by the master. Figure 7-18. I2C Complete Transfer Timing SDA 1-7 SCL START Condition ADDRESS 8 9 R/W ACK 1-7 8 DATA 7.8.1 External Electrical Connections 9 ACK 1-7 8 DATA 9 STOP Condition ACK Figure 7-19. Connection of Devices to the I2C Bus As Figure 7-19 shows, the I2C bus requires external pull-up resistors (RP). These resistors are primarily determined by the supply voltage, bus speed, and bus capacitance. For detailed information on how to calculate the optimum pull-up resistor value for your design, we recommend using the UM10204 I2C-bus specification and user manual Rev 6, or newer, available from the NXP website at www.nxp.com. Notes 16. The I2C peripheral is non-compliant with the NXP I2C specification in the following areas: analog glitch filter, I/O VOL/IOL, I/O hysteresis. The I2C Block has a digital glitch filter (not available in sleep mode). The Fast-mode minimum fall-time specification can be met by setting the I/Os to slow speed mode. See the I/O Electrical Specifications in "Inputs and Outputs" section on page 79 for details. 17. Fixed-block I2C does not support undefined bus conditions, nor does it support Repeated Start in Slave mode. These conditions should be avoided, or the UDB-based I2C component should be used instead. Document Number: 001-53304 Rev. *Z Page 54 of 137 PSoC(R) 3: CY8C34 Family Datasheet For most designs, the default values in Table 7-2 will provide excellent performance without any calculations. The default values were chosen to use standard resistor values between the minimum and maximum limits. The values in Table 7-2 work for designs with 1.8 V to 5.0V VDD, less than 200-pF bus capacitance (CB), up to 25 A of total input leakage (IIL), up to 0.4 V output voltage level (VOL), and a max VIH of 0.7 * VDD. Standard Mode and Fast Mode can use either GPIO or SIO PSoC pins. Fast Mode Plus requires use of SIO pins to meet the VOL spec at 20 mA. Calculation of custom pull-up resistor values is required; if your design does not meet the default assumptions, you use series resistors (RS) to limit injected noise, or you need to maximize the resistor value for low power consumption. Table 7-2. Recommended default Pull-up Resistor Values RP Units Standard Mode - 100 kbps 4.7 k, 5% Fast Mode - 400 kbps 1.74 k, 1% 620, 5% Fast Mode Plus - 1 Mbps Calculation of the ideal pull-up resistor value involves finding a value between the limits set by three equations detailed in the NXP I2C specification. These equations are: Equation 1: R PMIN = V DD max - V OL max I OL min Equation 2: R PMAX = T R max 0.8473 C B max Equation 3: R PMAX = V DD min - V IH min + V NH min I IH max Document Number: 001-53304 Rev. *Z Equation parameters: VDD = Nominal supply voltage for I2C bus VOL = Maximum output low voltage of bus devices. IOL= Low-level output current from I2C specification TR = Rise Time of bus from I2C specification CB = Capacitance of each bus line including pins and PCB traces VIH = Minimum high-level input voltage of all bus devices VNH = Minimum high-level input noise margin from I2C specification IIH = Total input leakage current of all devices on the bus The supply voltage (VDD) limits the minimum pull-up resistor value due to bus devices maximum low output voltage (VOL) specifications. Lower pull-up resistance increases current through the pins and can, therefore, exceed the spec conditions of VOL. Equation 1 is derived using Ohm's law to determine the minimum resistance that will still meet the VOL specification at 3 mA for standard and fast modes, and 20 mA for fast mode plus at the given VDD. Equation 2 determines the maximum pull-up resistance due to bus capacitance. Total bus capacitance is comprised of all pin, wire, and trace capacitance on the bus. The higher the bus capacitance, the lower the pull-up resistance required to meet the specified bus speeds rise time due to RC delays. Choosing a pull-up resistance higher than allowed can result in failing timing requirements resulting in communication errors. Most designs with five or less I2C devices and up to 20 centimeters of bus trace length have less than 100 pF of bus capacitance. A secondary effect that limits the maximum pull-up resistor value is total bus leakage calculated in Equation 3. The primary source of leakage is I/O pins connected to the bus. If leakage is too high, the pull-ups will have difficulty maintaining an acceptable VIH level causing communication errors. Most designs with five or less I2C devices on the bus have less than 10 A of total leakage current. Page 55 of 137 PSoC(R) 3: CY8C34 Family Datasheet Four comparators with optional connection to configurable LUT 8. Analog Subsystem outputs. The analog programmable system creates application specific combinations of both standard and advanced analog signal processing blocks. These blocks are then interconnected to each other and also to any pin on the device, providing a high level of design flexibility and IP security. The features of the analog subsystem are outlined here to provide an overview of capabilities and architecture. Two configurable switched capacitor/continuous time (SC/CT) blocks for functions that include opamp, unity gain buffer, programmable gain amplifier, transimpedance amplifier, and mixer. Two opamps for internal use and connection to GPIO that can be used as high current output buffers. Flexible, configurable analog routing architecture provided by analog globals, analog mux bus, and analog local buses. High resolution Delta-Sigma ADC. CapSense subsystem to enable capacitive touch sensing. Precision reference for generating an accurate analog voltage for internal analog blocks. Two 8-bit DACs that provide either voltage or current output. Figure 8-1. Analog Subsystem Block Diagram R O U T I N G SC/CT Block SC/CT Block Op Amp G PIO Port A N A L O G Precision Reference DAC Op Amp A N A L O G DelSig ADC DAC R O U T I N G Com parators CM P CM P CM P G PIO Port CM P CapSense Subsystem Analog Interface DSI Array Document Number: 001-53304 Rev. *Z Clock Distribution Config & Status Registers PHUB CPU Decim ator Page 56 of 137 PSoC(R) 3: CY8C34 Family Datasheet The PSoC Creator software program provides a user friendly interface to configure the analog connections between the GPIO and various analog resources and connections from one analog resource to another. PSoC Creator also provides component libraries that allow you to configure the various analog blocks to perform application specific functions (PGA, transimpedance amplifier, voltage DAC, current DAC, and so on). The tool also generates API interface libraries that allow you to write firmware that allows the communication between the analog peripheral and CPU/Memory. 8.1 Analog Routing The CY8C34 family of devices has a flexible analog routing architecture that provides the capability to connect GPIOs and different analog blocks, and also route signals between different analog blocks. One of the strong points of this flexible routing architecture is that it allows dynamic routing of input and output connections to the different analog blocks. For information on how to make pin selections for optimal analog routing, refer to the application note, AN58304 - PSoC(R) 3 and PSoC(R) 5 - Pin Selection for Analog Designs. Document Number: 001-53304 Rev. *Z 8.1.1 Features Flexible, configurable analog routing architecture 16 Analog globals (AG) and two analog mux buses (AMUXBUS) to connect GPIOs and the analog blocks Each GPIO is connected to one analog global and one analog mux bus 8 Analog local buses (abus) to route signals between the different analog blocks Multiplexers and switches for input and output selection of the analog blocks 8.1.2 Functional Description Analog globals (AGs) and analog mux buses (AMUXBUS) provide analog connectivity between GPIOs and the various analog blocks. There are 16 AGs in the CY8C34 family. The analog routing architecture is divided into four quadrants as shown in Figure 8-2. Each quadrant has four analog globals (AGL[0..3], AGL[4..7], AGR[0..3], AGR[4..7]). Each GPIO is connected to the corresponding AG through an analog switch. The analog mux bus is a shared routing resource that connects to every GPIO through an analog switch. There are two AMUXBUS routes in CY8C34, one in the left half (AMUXBUSL) and one in the right half (AMUXBUSR), as shown in Figure 8-2. Page 57 of 137 PSoC(R) 3: CY8C34 Family Datasheet Figure 8-2. CY8C34 Analog Interconnect Vssd * * * * swinn swfol * AGL[6] AGL[7] swfol * GPIO P3[5] GPIO P3[4] swinp GPIO swinn P3[3] GPIO P3[2] GPIO P3[1] GPIO P3[0] GPXT *P15[1] GPXT *P15[0] 3210 76543210 swinn * refbufl_ cmp COMPARATOR sc0 Vin Vref out vssa sc0_bgref (1.024V) out ref in refbuf_vref1 (1.024V) refbuf_vref2 (1.2V) refsel[1:0] sc1 Vin Vref out SC/CT Vssa sc1_bgref (1.024V) USB IO * P15[6] v2 DAC2 i2 GPIO P5[7] GPIO P5[6] GPIO P5[5] GPIO P5[4] SIO P12[7] SIO P12[6] GPIO * P1[7] GPIO * P1[6] dac_vref (0.256V) + DSM0 - vssa DSM vcm refs qtz_ref vref_vss_ext dsm0_qtz_vref2 (1.2V) dsm0_qtz_vref1 (1.024V) Vdda/3 Vdda/4 ExVrefL ExVrefR refmux[2:0] * * Vssb Vbat Vssd Ind Vboost * * * Large ( ~200 Ohms) * Switch Resistance Small ( ~870 Ohms ) GPIO P5[0] GPIO P5[1] GPIO P5[2] GPIO P5[3] GPIO P1[0] GPIO P1[1] GPIO P1[2] GPIO P1[3] GPIO P1[4] GPIO P1[5] GPIO P2[5] GPIO P2[6] GPIO P2[7] SIO P12[4] SIO P12[5] GPIO P6[4] GPIO P6[5] GPIO P6[6] GPIO P6[7] * * Connection * XRES * AMUXBUSL * AGR[3] AGR[2] AGR[1] AGR[0] AMUXBUSR * AGL[3] AGL[2] Notes: * Denotes pins on all packages LCD signals are not shown. AGR[0] AMUXBUSR LPF Vddio1 AGR[3] AGR[2] AGR[1] VBE Vss ref AGL[1] AGL[0] Mux Group Switch Group AMUXBUSR * AGL[1] AGL[2] AGL[3] TS ADC ANALOG ANALOG BUS GLOBALS ANALOG BUS * AMUXBUSL AGL[0] ANALOG GLOBALS : 3210 76543210 01 2 3 4 56 7 0123 * AMUXBUSL Vddd * P15[7] VIDAC vssd dsm0_vcm_vref1 (0.8V) dsm0_vcm_vref2 (0.7V) Vssd USB IO v0 DAC0 i0 vcmsel[1:0] Vccd ABUSR0 ABUSR1 ABUSR2 ABUSR3 ABUSL0 ABUSL1 ABUSL2 ABUSL3 * * Vddio2 refbufr * * Vddd cmp0_vref (1.024V) AGR[4] AMUXBUSR CAPSENSE out ref in refbufl refsel[1:0] GPIO P6[0] GPIO P6[1] GPIO P6[2] GPIO P6[3] GPIO P15[4] GPIO P15[5] GPIO P2[0] GPIO P2[1] GPIO P2[2] GPIO P2[3] * GPIO P2[4] * + - ExVrefR AGR[7] AGR[6] AGR[5] bg_vda_swabusl0 refbuf_vref1 (1.024V) refbuf_vref2 (1.2V) Vssd + - comp3 abuf_vref_int (1.024V) swin cmp1_vref Vdda Vdda/2 Vccd comp1 + - comp2 cmp_muxvn[1:0] vref_cmp1 (0.256V) bg_vda_res_en swout out1 comp0 + - cmp1_vref cmp0_vref (1.024V) GPIO P4[2] GPIO P4[3] GPIO P4[4] GPIO P4[5] GPIO P4[6] GPIO P4[7] in1 out0 swin i2 * LPF in0 swout abuf_vref_int (1.024V) refbufr_ cmp i0 cmp1_vref * * * AGL[4] AGL[5] swinp 01 23 4 56 7 0123 * opamp2 * * * * AMUXBUSL * AGR[6] AGR[7] ExVrefL2 opamp0 swinp GPIO P0[4] GPIO P0[5] GPIO P0[6] GPIO P0[7] * AGR[4] AGR[5] AGL[6] AGL[7] ExVrefL ExVrefL1 * * AMUXBUSR AMUXBUSL AGL[4] AGL[5] Vddio3 GPIO P3[6] GPIO P3[7] SIO P12[0] SIO P12[1] GPIO P15[2] GPIO P15[3] swinp * Vcca Vssa Vdda SIO P12[2] SIO P12[3] GPIO P4[0] GPIO P4[1] GPIO P0[0] GPIO P0[1] GPIO P0[2] GPIO P0[3] Vddio0 swinn Rev #60 13-Feb-2012 To preserve detail of this figure, this figure is best viewed with a PDF display program or printed on a 11" x 17" paper. Document Number: 001-53304 Rev. *Z Page 58 of 137 PSoC(R) 3: CY8C34 Family Datasheet Analog local buses (abus) are routing resources located within the analog subsystem and are used to route signals between different analog blocks. There are eight abus routes in CY8C34, four in the left half (abusl [0:3]) and four in the right half (abusr [0:3]) as shown in Figure 8-2. Using the abus saves the analog globals and analog mux buses from being used for interconnecting the analog blocks. Multiplexers and switches exist on the various buses to direct signals into and out of the analog blocks. A multiplexer can have only one connection on at a time, whereas a switch can have multiple connections on simultaneously. In Figure 8-2, multiplexers are indicated by grayed ovals and switches are indicated by transparent ovals. 8.2 Delta-sigma ADC The CY8C34 device contains one delta-sigma ADC. This ADC offers differential input, high resolution and excellent linearity, making it a good ADC choice for measurement applications. The converter can be configured to output 12-bit resolution at data rates of up to 192 ksps. At a fixed clock rate, resolution can be traded for faster data rates as shown in Table 8-1 and Figure 8-3. Table 8-1. Delta-sigma ADC Performance Bits Maximum Sample Rate (sps) SINAD (dB) 12 192 k 66 8 384 k 43 high speed serial data stream into parallel ADC results. The modulator/decimator frequency response is [(sin x)/x]4. Figure 8-4. Delta-sigma ADC Block Diagram Positive Input Mux (Analog Routing) Input Buffer Negative Input Mux Delta Sigma Modulator Decimator 12 to 20 Bit Result EOC SOC Resolution and sample rate are controlled by the Decimator. Data is pipelined in the decimator; the output is a function of the last four samples. When the input multiplexer is switched, the output data is not valid until after the fourth sample after the switch. 8.2.2 Operational Modes The ADC can be configured by the user to operate in one of four modes: Single Sample, Multi Sample, Continuous, or Multi Sample (Turbo). All four modes are started by either a write to the start bit in a control register or an assertion of the Start of Conversion (SoC) signal. When the conversion is complete, a status bit is set and the output signal End of Conversion (EoC) asserts high and remains high until the value is read by either the DMA controller or the CPU. 8.2.2.1 Single Sample Figure 8-3. Delta-sigma ADC Sample Rates, Range = 1.024 V 1000000 Sample e Rate, sps 100000 10000 1000 100 In Single Sample mode, the ADC performs one sample conversion on a trigger. In this mode, the ADC stays in standby state waiting for the SoC signal to be asserted. When SoC is signaled the ADC performs four successive conversions. The first three conversions prime the decimator. The ADC result is valid and available after the fourth conversion, at which time the EoC signal is generated. To detect the end of conversion, the system may poll a control register for status or configure the external EoC signal to generate an interrupt or invoke a DMA request. When the transfer is done the ADC reenters the standby state where it stays until another SoC event. 8.2.2.2 Continuous 10 1 6 8 10 12 14 16 18 20 22 Resolution, bits Continuous Multi-Sample Multi-SampleTurbo 8.2.1 Functional Description The ADC connects and configures three basic components, input buffer, delta-sigma modulator, and decimator. The basic block diagram is shown in Figure 8-4. The signal from the input muxes is delivered to the delta-sigma modulator either directly or through the input buffer. The delta-sigma modulator performs the actual analog to digital conversion. The modulator over-samples the input and generates a serial data stream output. This high speed data stream is not useful for most applications without some type of post processing, and so is passed to the decimator through the Analog Interface block. The decimator converts the Document Number: 001-53304 Rev. *Z Continuous sample mode is used to take multiple successive samples of a single input signal. Multiplexing multiple inputs should not be done with this mode. There is a latency of three conversion times before the first conversion result is available. This is the time required to prime the decimator. After the first result, successive conversions are available at the selected sample rate. 8.2.2.3 Multi Sample Multi sample mode is similar to continuous mode except that the ADC is reset between samples. This mode is useful when the input is switched between multiple signals. The decimator is re-primed between each sample so that previous samples do not affect the current conversion. Upon completion of a sample, the next sample is automatically initiated. The results can be transferred using either firmware polling, interrupt, or DMA. More information on output formats is provided in the Technical Reference Manual. Page 59 of 137 PSoC(R) 3: CY8C34 Family Datasheet Speed and power can be traded off by using one of three 8.2.3 Start of Conversion Input modes: fast, slow, or ultra low-power The SoC signal is used to start an ADC conversion. A digital clock or UDB output can be used to drive this input. It can be used when the sampling period must be longer than the ADC conversion time or when the ADC must be synchronized to other hardware. This signal is optional and does not need to be connected if ADC is running in a continuous mode. Comparator outputs can be routed to lookup tables to perform simple logic functions and then can also be routed to digital blocks The positive input of the comparators may be optionally passed through a low pass filter. Two filters are provided 8.2.4 End of Conversion Output Comparator inputs can be connections to GPIO, DAC outputs The EoC signal goes high at the end of each ADC conversion. This signal may be used to trigger either an interrupt or DMA request. and SC block outputs 8.3.1 Input and Output Interface The positive and negative inputs to the comparators come from the analog global buses, the analog mux line, the analog local bus and precision reference through multiplexers. The output from each comparator could be routed to any of the two input LUTs. The output of that LUT is routed to the UDB Digital System Interface. 8.3 Comparators The CY8C34 family of devices contains four comparators in a device. Comparators have these features: Input offset factory trimmed to less than 5 mV Rail-to-rail common mode input range (VSSA to VDDA) Figure 8-5. Analog Comparator From Analog Routing From Analog Routing ANAIF + comp0 _ + comp1 _ + _ comp3 + _ From Analog Routing From Analog Routing comp2 4 4 LUT0 4 4 4 LUT1 4 LUT2 4 4 LUT3 UDBs Document Number: 001-53304 Rev. *Z Page 60 of 137 PSoC(R) 3: CY8C34 Family Datasheet 8.3.2 LUT The CY8C34 family of devices contains four LUTs. The LUT is a two input, one output lookup table that is driven by any one or two of the comparators in the chip. The output of any LUT is routed to the digital system interface of the UDB array. From the digital system interface of the UDB array, these signals can be connected to UDBs, DMA controller, I/O, or the interrupt controller. See Figure 8-7. In any configuration, the input and output signals can all be connected to the internal global signals and monitored with an ADC, or comparator. The configurations are implemented with switches between the signals and GPIO pins. Figure 8-7. Opamp Configurations a) Voltage Follower The LUT control word written to a register sets the logic function on the output. The available LUT functions and the associated control word is shown in Table 8-2. Opamp VOUT to Pin VIN Table 8-2. LUT Function vs. Program Word and Inputs Control Word 0000b Output (A and B are LUT inputs) FALSE (`0') 0001b 0010b 0011b 0100b 0101b 0110b 0111b 1000b 1001b 1010b 1011b 1100b 1101b 1110b 1111b A AND B A AND (NOT B) A (NOT A) AND B B A XOR B A OR B A NOR B A XNOR B NOT B A OR (NOT B) NOT A (NOT A) OR B A NAND B TRUE (`1') 8.4 Opamps The CY8C34 family of devices contains two general purpose opamps in a device. Figure 8-6. Opamp GPIO Analog Global Bus Analog Global Bus VREF Analog Internal Bus GPIO b) External Uncommitted Opamp Opamp VOUT to GPIO VP to GPIO VN to GPIO c) Internal Uncommitted Opamp VN To Internal Signals Opamp VOUT to Pin VP GPIO Pin The opamp has three speed modes, slow, medium, and fast. The slow mode consumes the least amount of quiescent power and the fast mode consumes the most power. The inputs are able to swing rail-to-rail. The output swing is capable of rail-to-rail operation at low current output, within 50 mV of the rails. When driving high current loads (about 25 mA) the output voltage may only get within 500 mV of the rails. 8.5 Programmable SC/CT Blocks Opamp GPIO = Analog Switch The opamp is uncommitted and can be configured as a gain stage or voltage follower, or output buffer on external or internal signals. Document Number: 001-53304 Rev. *Z The CY8C34 family of devices contains two switched capacitor/continuous time (SC/CT) blocks in a device. Each switched capacitor/continuous time block is built around a single rail-to-rail high bandwidth opamp. Switched capacitor is a circuit design technique that uses capacitors plus switches instead of resistors to create analog functions. These circuits work by moving charge between capacitors by opening and closing different switches. Nonoverlapping in phase clock signals control the switches, so that not all switches are ON simultaneously. Page 61 of 137 PSoC(R) 3: CY8C34 Family Datasheet The PSoC Creator tool offers a user friendly interface, which allows you to easily program the SC/CT blocks. Switch control and clock phase control configuration is done by PSoC Creator so users only need to determine the application use parameters such as gain, amplifier polarity, VREF connection, and so on. The same opamps and block interfaces are also connectable to an array of resistors which allows the construction of a variety of continuous time functions. The opamp and resistor array is programmable to perform various analog functions including Figure 8-8. PGA Resistor Settings Vin 0 Vref 1 R1 R2 20 k or 40 k 20 k to 980 k S Vref 0 Vin 1 Naked operational amplifier - Continuous mode Unity-gain buffer - Continuous mode Programmable gain amplifier (PGA) - Continuous mode Transimpedance amplifier (TIA) - Continuous mode Up/down mixer - Continuous mode Sample and hold mixer (NRZ S/H) - Switched cap mode The PGA is used in applications where the input signal may not be large enough to achieve the desired resolution in the ADC, or dynamic range of another SC/CT block such as a mixer. The gain is adjustable at runtime, including changing the gain of the PGA prior to each ADC sample. 8.5.4 TIA The Naked Opamp presents both inputs and the output for connection to internal or external signals. The opamp has a unity gain bandwidth greater than 6.0 MHz and output drive current up to 650 A. This is sufficient for buffering internal signals (such as DAC outputs) and driving external loads greater than 7.5 kohms. The Transimpedance Amplifier (TIA) converts an internal or external current to an output voltage. The TIA uses an internal feedback resistor in a continuous time configuration to convert input current to output voltage. For an input current Iin, the output voltage is VREF - Iin x Rfb, where VREF is the value placed on the non inverting input. The feedback resistor Rfb is programmable between 20 K and 1 M through a configuration register. Table 8-4 shows the possible values of Rfb and associated configuration settings. 8.5.2 Unity Gain Table 8-4. Feedback Resistor Settings First order analog to digital modulator - Switched cap mode 8.5.1 Naked Opamp The Unity Gain buffer is a Naked Opamp with the output directly connected to the inverting input for a gain of 1.00. It has a -3 dB bandwidth greater than 6.0 MHz. Configuration Word Nominal Rfb (K) 000b 20 001b 30 8.5.3 PGA The PGA amplifies an external or internal signal. The PGA can be configured to operate in inverting mode or noninverting mode. The PGA function may be configured for both positive and negative gains as high as 50 and 49 respectively. The gain is adjusted by changing the values of R1 and R2 as illustrated in Figure 8-8. The schematic in Figure 8-8 shows the configuration and possible resistor settings for the PGA. The gain is switched from inverting and non inverting by changing the shared select value of the both the input muxes. The bandwidth for each gain case is listed in Table 8-3. 010b 40 011b 60 100b 120 101b 250 110b 500 111b 1000 Figure 8-9. Continuous Time TIA Schematic Table 8-3. Bandwidth R fb Gain Bandwidth 1 6.0 MHz 24 340 kHz 48 220 kHz 50 215 kHz Document Number: 001-53304 Rev. *Z I in V ref V out Page 62 of 137 PSoC(R) 3: CY8C34 Family Datasheet The TIA configuration is used for applications where an external sensor's output is current as a function of some type of stimulus such as temperature, light, magnetic flux etc. In a common application, the voltage DAC output can be connected to the VREF TIA input to allow calibration of the external sensor bias current by adjusting the voltage DAC output voltage. 8.6 LCD Direct Drive The PSoC Liquid Crystal Display (LCD) driver system is a highly configurable peripheral designed to allow PSoC to directly drive a broad range of LCD glass. All voltages are generated on chip, eliminating the need for external components. With a high multiplex ratio of up to 1/16, the CY8C34 family LCD driver system can drive a maximum of 736 segments. The PSoC LCD driver module was also designed with the conservative power budget of portable devices in mind, enabling different LCD drive modes and power down modes to conserve power. PSoC Creator provides an LCD segment drive component. The component wizard provides easy and flexible configuration of LCD resources. You can specify pins for segments and commons along with other options. The software configures the device to meet the required specifications. This is possible because of the programmability inherent to PSoC devices. Key features of the PSoC LCD segment system are: LCD panel direct driving Type A (standard) and Type B (low-power) waveform support Figure 8-10. LCD System LCD DAC Global Clock UDB LCD Driver Block DMA PIN Display RAM PHUB 8.6.1 LCD Segment Pin Driver Each GPIO pin contains an LCD driver circuit. The LCD driver buffers the appropriate output of the LCD DAC to directly drive the glass of the LCD. A register setting determines whether the pin is a common or segment. The pin's LCD driver then selects one of the six bias voltages to drive the I/O pin, as appropriate for the display data. 8.6.2 Display Data Flow Up to 62 total common and segment outputs The LCD segment driver system reads display data and generates the proper output voltages to the LCD glass to produce the desired image. Display data resides in a memory buffer in the system SRAM. Each time you need to change the common and segment driver voltages, the next set of pixel data moves from the memory buffer into the Port Data Registers via DMA. Up to 1/16 multiplex for a maximum of 16 backplane/common 8.6.3 UDB and LCD Segment Control Wide operating voltage range support (2 V to 5 V) for LCD panels Static, 1/2, 1/3, 1/4, 1/5 bias voltage levels Internal bias voltage generation through internal resistor ladder outputs Up to 62 front plane/segment outputs for direct drive Drives up to 736 total segments (16 backplane x 46 front plane) Up to 64 levels of software controlled contrast Ability to move display data from memory buffer to LCD driver through DMA (without CPU intervention) Adjustable LCD refresh rate from 10 Hz to 150 Hz Ability to invert LCD display for negative image Three LCD driver drive modes, allowing power optimization Document Number: 001-53304 Rev. *Z A UDB is configured to generate the global LCD control signals and clocking. This set of signals is routed to each LCD pin driver through a set of dedicated LCD global routing channels. In addition to generating the global LCD control signals, the UDB also produces a DMA request to initiate the transfer of the next frame of LCD data. 8.6.4 LCD DAC The LCD DAC generates the contrast control and bias voltage for the LCD system. The LCD DAC produces up to five LCD drive voltages plus ground, based on the selected bias ratio. The bias voltages are driven out to GPIO pins on a dedicated LCD bias bus, as required. Page 63 of 137 PSoC(R) 3: CY8C34 Family Datasheet 8.7 CapSense 8.9 DAC The CapSense system provides a versatile and efficient means for measuring capacitance in applications such as touch sense buttons, sliders, proximity detection, etc. The CapSense system uses a configuration of system resources, including a few hardware functions primarily targeted for CapSense. Specific resource usage is detailed in the CapSense component in PSoC Creator. The CY8C34 parts contain two Digital to Analog Convertors (DACs). Each DAC is 8-bit and can be configured for either voltage or current output. The DACs support CapSense, power supply regulation, and waveform generation. Each DAC has the following features: A capacitive sensing method using a delta-sigma modulator (CSD) is used. It provides capacitance sensing using a switched capacitor technique with a delta-sigma modulator to convert the sensing current to a digital code. 8.8 Temp Sensor Adjustable voltage or current output in 255 steps Programmable step size (range selection) Eight bits of calibration to correct 25 percent of gain error Source and sink option for current output High and low speed / power modes 8 Msps conversion rate for current output 1 Msps conversion rate for voltage output Die temperature is used to establish programming parameters for writing flash. Die temperature is measured using a dedicated sensor based on a forward biased transistor. The temperature sensor has its own auxiliary ADC. Monotonic in nature Data and strobe inputs can be provided by the CPU or DMA, or routed directly from the DSI Dedicated low-resistance output pin for high-current mode Figure 8-11. DAC Block Diagram I source Range 1x , 8x , 64x Reference Source Scaler Vout R Iout 3R I sink Range 1x , 8x , 64x 8.9.1 Current DAC 8.10 Up/Down Mixer The current DAC (IDAC) can be configured for the ranges 0 to 31.875 A, 0 to 255 A, and 0 to 2.04 mA. The IDAC can be configured to source or sink current. In continuous time mode, the SC/CT block components are used to build an up or down mixer. Any mixing application contains an input signal frequency and a local oscillator frequency. The polarity of the clock, Fclk, switches the amplifier between inverting or noninverting gain. The output is the product of the input and the switching function from the local oscillator, with frequency components at the local oscillator plus and minus the signal frequency (Fclk + Fin and Fclk - Fin) and reduced-level frequency components at odd integer multiples of the local oscillator frequency. The local oscillator frequency is provided by the selected clock source for the mixer. 8.9.2 Voltage DAC For the voltage DAC (VDAC), the current DAC output is routed through resistors. The two ranges available for the VDAC are 0 to 1.02 V and 0 to 4.08 V. In voltage mode any load connected to the output of a DAC should be purely capacitive (the output of the VDAC is not buffered). Continuous time up and down mixing works for applications with input signals and local oscillator frequencies up to 1 MHz. Document Number: 001-53304 Rev. *Z Page 64 of 137 PSoC(R) 3: CY8C34 Family Datasheet counter to make an incremental converter. The accuracy of the sampled data from the first-order modulator is determined from several factors. Figure 8-12. Mixer Configuration C2 = 1.7 pF The main application for this modulator is for a low-frequency ADC with high accuracy. Applications include strain gauges, thermocouples, precision voltage, and current measurement. C1 = 850 fF Rmix 0 20 k or 40 k 9. Programming, Debug Interfaces, Resources sc_clk Rmix 0 20 k or 40 k Vin Vout 0 Vref PSoC devices include extensive support for programming, testing, debugging, and tracing both hardware and firmware. Three interfaces are available: JTAG, SWD, and SWV. JTAG and SWD support all programming and debug features of the device. JTAG also supports standard JTAG scan chains for board level test and chaining multiple JTAG devices to a single JTAG connection. 1 sc_clk 8.11 Sample and Hold The main application for a sample and hold, is to hold a value stable while an ADC is performing a conversion. Some applications require multiple signals to be sampled simultaneously, such as for power calculations (V and I). Figure 8-13. Sample and Hold Topology (1 and 2 are opposite phases of a clock) 1 Vi C1 C2 1 n 1 2 V ref V out 2 2 1 2 1 1 V ref 2 C3 C4 2 Vref 8.11.1 Down Mixer The SC/CT block can be used as a mixer to down convert an input signal. This circuit is a high bandwidth passive sample network that can sample input signals up to 14 MHz. This sampled value is then held using the opamp with a maximum clock rate of 4 MHz. The output frequency is at the difference between the input frequency and the highest integer multiple of the Local Oscillator that is less than the input. 8.11.2 First Order Modulator - SC Mode A first order modulator is constructed by placing the SC/CT block in an integrator mode and using a comparator to provide a 1-bit feedback to the input. Depending on this bit, a reference voltage is either subtracted or added to the input signal. The block output is the output of the comparator and not the integrator in the modulator case. The signal is downshifted and buffered and then processed by a decimator to make a delta-sigma converter or a Document Number: 001-53304 Rev. *Z For more information on PSoC 3 Programming, refer to the PSoC(R) 3 Device Programming Specifications. Complete Debug on Chip (DoC) functionality enables full device debugging in the final system using the standard production device. It does not require special interfaces, debugging pods, simulators, or emulators. Only the standard programming connections are required to fully support debug. The PSoC Creator IDE software provides fully integrated programming and debug support for PSoC devices. The low cost MiniProg3 programmer and debugger is designed to provide full programming and debug support of PSoC devices in conjunction with the PSoC Creator IDE. PSoC JTAG, SWD, and SWV interfaces are fully compatible with industry standard third party tools. All DOC circuits are disabled by default and can only be enabled in firmware. If not enabled, the only way to reenable them is to erase the entire device, clear flash protection, and reprogram the device with new firmware that enables DOC. Disabling DOC features, robust flash protection, and hiding custom analog and digital functionality inside the PSoC device provide a level of security not possible with multichip application solutions. Additionally, all device interfaces can be permanently disabled (Device Security) for applications concerned about phishing attacks due to a maliciously reprogrammed device. Permanently disabling interfaces is not recommended in most applications because you cannot access the device later. Because all programming, debug, and test interfaces are disabled when Device Security is enabled, PSoCs with Device Security enabled may not be returned for failure analysis. Table 9-1. Debug Configurations Debug and Trace Configuration All debug and trace disabled GPIO Pins Used 0 JTAG 4 or 5 SWD 2 SWV 1 SWD + SWV 3 Page 65 of 137 PSoC(R) 3: CY8C34 Family Datasheet 9.1 JTAG Interface The IEEE 1149.1 compliant JTAG interface exists on four or five pins (the nTRST pin is optional). The JTAG interface is used for programming the flash memory, debugging, I/O scan chains, and JTAG device chaining. PSoC 3 has certain timing requirements to be met for entering programming mode through the JTAG interface. Due to these timing requirements, not all standard JTAG programmers, or standard JTAG file formats such as SVF or STAPL, can support PSoC 3 programming. The list of programmers that support PSoC 3 programming is available at http://www.cypress.com/go/programming. The JTAG clock frequency can be up to 14 MHz, or 1/3 of the CPU clock frequency for 8 and 16-bit transfers, or 1/5 of the CPU clock frequency for 32-bit transfers. By default, the JTAG pins are enabled on new devices but the JTAG interface can be disabled, allowing these pins to be used as GPIO instead. Figure 9-1. JTAG Interface Connections between PSoC 3 and Programmer VDD Host Programmer PSoC 3 VDD VDDD, VDDA, VDDIO0, VDDIO1, VDDIO2, VDDIO3 1, 2, 3, 4 TCK TMS TCK (P1[1] 5 TMS (P1[0]) 5 TDO TDI (P1[4]) TDI TDO (P1[3]) nTRST (P1[5]) 6 nTRST 6 XRES or P1[2] 4, 7 XRES GND VSSD, VSSA GND 1 The voltage levels of Host Programmer and the PSoC 3 voltage domains involved in Programming should be same. The Port 1 JTAG pins, XRES pin (XRES_N or P1[2]) are powered by VDDIO1. So, VDDIO1 of PSoC 3 should be at same voltage level as host VDD. Rest of PSoC 3 voltage domains ( VDDD, VDDA, VDDIO0, VDDIO2, VDDIO3) need not be at the same voltage level as host Programmer. 2 Vdda must be greater than or equal to all other power supplies (Vddd, Vddio's) in PSoC 3. 3 For Power cycle mode Programming, XRES pin is not required. But the Host programmer must have the capability to toggle power (Vddd, Vdda, All Vddio's) to PSoC 3. This may typically require external interface circuitry to toggle power which will depend on the programming setup. The power supplies can be brought up in any sequence, however, once stable, VDDA must be greater than or equal to all other supplies. 4 For JTAG Programming, Device reset can also be done without connecting to the XRES pin or Power cycle mode by using the TMS,TCK,TDI, TDO pins of PSoC 3, and writing to a specific register. But this requires that the DPS setting in NVL is not equal to "Debug Ports Disabled". 5 By default, PSoC 3 is configured for 4-wire JTAG mode unless user changes the DPS setting. So the TMS pin is unidirectional. But if the DPS setting is changed to non-JTAG mode, the TMS pin in JTAG is bi-directional as the SWD Protocol has to be used for acquiring the PSoC 3 device initially. After switching from SWD to JTAG mode, the TMS pin will be uni-directional. In such a case, unidirectional buffer should not be used on TMS line. 6 nTRST JTAG pin (P1[5]) cannot be used to reset the JTAG TAP controlller during first time programming of PSoC 3 as the default setting is 4-wire JTAG (nTRST disabled). Use the TMS, TCK pins to do a reset of JTAG TAP controller. 7 If XRES pin is used by host, P1[2] will be configured as XRES by default only for 48-pin devices (without dedicated XRES pin). For devices with dedicated XRES pin, P1[2] is GPIO pin by default. So use P1[2] as Reset pin only for 48-pin devices, but use dedicated XRES pin for rest of devices. Document Number: 001-53304 Rev. *Z Page 66 of 137 PSoC(R) 3: CY8C34 Family Datasheet 9.2 Serial Wire Debug Interface The SWD interface is the preferred alternative to the JTAG interface. It requires only two pins instead of the four or five needed by JTAG. SWD provides all of the programming and debugging features of JTAG at the same speed. SWD does not provide access to scan chains or device chaining. The SWD clock frequency can be up to 1/3 of the CPU clock frequency. SWD uses two pins, either two of the JTAG pins (TMS and TCK) or the USBIO D+ and D- pins. The USBIO pins are useful for in system programming of USB solutions that would otherwise require a separate programming connector. One pin is used for the data clock and the other is used for data input and output. SWD can be enabled on only one of the pin pairs at a time. This only happens if, within 8 s (key window) after reset, that pin pair (JTAG or USB) receives a predetermined acquire sequence of 1s and 0s. If the NVL latches are set for SWD (see Section 5.5), this sequence need not be applied to the JTAG pin pair. The acquire sequence must always be applied to the USB pin pair. SWD is used for debugging or for programming the flash memory. The SWD interface can be enabled from the JTAG interface or disabled, allowing its pins to be used as GPIO. Unlike JTAG, the SWD interface can always be reacquired on any device during the key window. It can then be used to reenable the JTAG interface, if desired. When using SWD or JTAG pins as standard GPIO, make sure that the GPIO functionality and PCB circuits do not interfere with SWD or JTAG use. Figure 9-2. SWD Interface Connections between PSoC 3 and Programmer VDD Host Programmer VDDD, VDDA, VDDIO0, VDDIO1, VDDIO2, VDDIO3 1, 2, 3 VDD SWDCK SWDCK (P1[1] or P15[7]) SWDIO SWDIO (P1[0] or P15[6]) XRES or P1[2] XRES GND PSoC 3 GND 3, 4 VSSD, VSSA 1 The voltage levels of the Host Programmer and the PSoC 3 voltage domains involved in Programming should be the same. XRES pin (XRES_N or P1[2]) is powered by VDDIO1. The USB SWD pins are powered by VDDD. So for Programming using the USB SWD pins with XRES pin, the VDDD, VDDIO1 of PSoC 3 should be at the same voltage level as Host VDD. Rest of PSoC 3 voltage domains ( VDDA, VDDIO0, VDDIO2, VDDIO3) need not be at the same voltage level as host Programmer. The Port 1 SWD pins are powered by VDDIO1. So VDDIO1 of PSoC 3 should be at same voltage level as host VDD for Port 1 SWD programming. Rest of PSoC 3 voltage domains ( VDDD, VDDA, VDDIO0, VDDIO2, VDDIO3) need not be at the same voltage level as host Programmer. 2 Vdda must be greater than or equal to all other power supplies (Vddd, Vddio's) in PSoC 3. 3 For Power cycle mode Programming, XRES pin is not required. But the Host programmer must have the capability to toggle power (Vddd, Vdda, All Vddio's) to PSoC 3. This may typically require external interface circuitry to toggle power which will depend on the programming setup. The power supplies can be brought up in any sequence, however, once stable, VDDA must be greater than or equal to all other supplies. 4 P1[2] will be configured as XRES by default only for 48-pin devices (without dedicated XRES pin). For devices with dedicated XRES pin, P1[2] is GPIO pin by default. So use P1[2] as Reset pin only for 48pin devices, but use dedicated XRES pin for rest of devices. Document Number: 001-53304 Rev. *Z Page 67 of 137 PSoC(R) 3: CY8C34 Family Datasheet 9.3 Debug Features Using the JTAG or SWD interface, the CY8C34 supports the following debug features: Halt and single-step the CPU View and change CPU and peripheral registers, and RAM addresses Eight program address breakpoints One memory access breakpoint--break on reading or writing any memory address and data value Break on a sequence of breakpoints (non recursive) Debugging at the full speed of the CPU Compatible with PSoC Creator and MiniProg3 programmer and debugger Standard JTAG programming and debugging interfaces make CY8C34 compatible with other popular third-party tools (for example, ARM / Keil) 9.4 Trace Features The CY8C34 supports the following trace features when using JTAG or SWD: Trace the 8051 program counter (PC), accumulator register (ACC), and one SFR / 8051 core RAM register Trace depth up to 1000 instructions if all registers are traced, or 2000 instructions if only the PC is traced (on devices that include trace memory) Program address trigger to start tracing Trace windowing, that is, only trace when the PC is within a given range Two modes for handling trace buffer full: continuous (overwriting the oldest trace data) or break when trace buffer is full 9.5 Single Wire Viewer Interface The SWV interface is closely associated with SWD but can also be used independently. SWV data is output on the JTAG interface's TDO pin. If using SWV, you must configure the device for SWD, not JTAG. SWV is not supported with the JTAG interface. SWV is ideal for application debug where it is helpful for the firmware to output data similar to 'printf' debugging on PCs. The SWV is ideal for data monitoring, because it requires only a single pin and can output data in standard UART format or Manchester encoded format. For example, it can be used to tune a PID control loop in which the output and graphing of the three error terms greatly simplifies coefficient tuning. The following features are supported in SWV: 32 virtual channels, each 32 bits long Simple, efficient packing and serializing protocol Supports standard UART format (N81) verified. You can increase flash protection levels to protect firmware IP. Flash protection can only be reset after a full device erase. Individual flash blocks can be erased, programmed, and verified, if block security settings permit. 9.7 Device Security PSoC 3 offers an advanced security feature called device security, which permanently disables all test, programming, and debug ports, protecting your application from external access. The device security is activated by programming a 32-bit key (0x50536F43) to a Write Once Latch (WOL). The WOL is a type of nonvolatile latch (NVL). The cell itself is an NVL with additional logic wrapped around it. Each WOL device contains four bytes (32 bits) of data. The wrapper outputs a `1' if a super-majority (28 of 32) of its bits match a pre-determined pattern (0x50536F43); it outputs a `0' if this majority is not reached. When the output is 1, the Write Once NV latch locks the part out of Debug and Test modes; it also permanently gates off the ability to erase or alter the contents of the latch. Matching all bits is intentionally not required, so that single (or few) bit failures do not deassert the WOL output. The state of the NVL bits after wafer processing is truly random with no tendency toward 1 or 0. The WOL only locks the part after the correct 32-bit key (0x50536F43) is loaded into the NVL's volatile memory, programmed into the NVL's nonvolatile cells, and the part is reset. The output of the WOL is only sampled on reset and used to disable the access. This precaution prevents anyone from reading, erasing, or altering the contents of the internal memory. The user can write the key into the WOL to lock out external access only if no flash protection is set (see "Flash Security" on page 22). However, after setting the values in the WOL, a user still has access to the part until it is reset. Therefore, a user can write the key into the WOL, program the flash protection data, and then reset the part to lock it. If the device is protected with a WOL setting, Cypress cannot perform failure analysis and, therefore, cannot accept RMAs from customers. The WOL can be read out via SWD port to electrically identify protected parts. The user can write the key in WOL to lock out external access only if no flash protection is set. For more information on how to take full advantage of the security features in PSoC see the PSoC 3 TRM. Disclaimer Note the following details of the flash code protection features on Cypress devices. Cypress products meet the specifications contained in their particular Cypress data sheets. Cypress believes that its family of products is one of the most secure families of its kind on the market today, regardless of how they are used. There may be methods, unknown to Cypress, that can breach the code protection features. Any of these methods, to our knowledge, would be dishonest and possibly illegal. Neither Cypress nor any other semiconductor manufacturer can guarantee the security of their code. Code protection does not mean that we are guaranteeing the product as "unbreakable." Cypress is willing to work with the customer who is concerned about the integrity of their code. Code protection is constantly evolving. We at Cypress are committed to continuously improving the code protection features of our products. 9.6 Programming Features The JTAG and SWD interfaces provide full programming support. The entire device can be erased, programmed, and Document Number: 001-53304 Rev. *Z Page 68 of 137 PSoC(R) 3: CY8C34 Family Datasheet 10. Development Support The CY8C34 family has a rich set of documentation, development tools, and online resources to assist you during your development process. Visit psoc.cypress.com/getting-started to find out more. 10.1 Documentation A suite of documentation, supports the CY8C34 family to ensure that you can find answers to your questions quickly. This section contains a list of some of the key documents. Software User Guide: A step-by-step guide for using PSoC Creator. The software user guide shows you how the PSoC Creator build process works in detail, how to use source control with PSoC Creator, and much more. Component data sheets: The flexibility of PSoC allows the creation of new peripherals (components) long after the device has gone into production. Component data sheets provide all of the information needed to select and use a particular component, including a functional description, API documentation, example code, and AC/DC specifications. Document Number: 001-53304 Rev. *Z Application Notes: PSoC application notes discuss a particular application of PSoC in depth; examples include brushless DC motor control and on-chip filtering. Application notes often include example projects in addition to the application note document. Technical Reference Manual: The Technical Reference Manual (TRM) contains all the technical detail you need to use a PSoC device, including a complete description of all PSoC registers. 10.2 Online In addition to print documentation, the Cypress PSoC forums connect you with fellow PSoC users and experts in PSoC from around the world, 24 hours a day, 7 days a week. 10.3 Tools With industry standard cores, programming, and debugging interfaces, the CY8C34 family is part of a development tool ecosystem. Visit us at www.cypress.com/go/psoccreator for the latest information on the revolutionary, easy to use PSoC Creator IDE, supported third party compilers, programmers, debuggers, and development kits. Page 69 of 137 PSoC(R) 3: CY8C34 Family Datasheet 11. Electrical Specifications Specifications are valid for -40 C TA 85 C and TJ 100 C, except where noted. Specifications are valid for 1.71 V to 5.5 V, except where noted. The unique flexibility of the PSoC UDBs and analog blocks enable many functions to be implemented in PSoC Creator components, see the component data sheets for full AC/DC specifications of individual functions. See the "Example Peripherals" section on page 43 for further explanation of PSoC Creator components. 11.1 Absolute Maximum Ratings Table 11-1. Absolute Maximum Ratings DC Specifications[18] Min Typ Max Units VDDA Parameter Analog supply voltage relative to VSSA Description -0.5 - 6 V VDDD Digital supply voltage relative to VSSD -0.5 - 6 V VDDIO I/O supply voltage relative to VSSD -0.5 - 6 V VCCA Direct analog core voltage input -0.5 - 1.95 V VCCD Direct digital core voltage input -0.5 - 1.95 V VSSA Analog ground voltage VSSD -0.5 - VSSD + 0.5 V VGPIO[19] DC input voltage on GPIO Includes signals sourced by VDDA and routed internal to the pin VSSD -0.5 - VDDIO + 0.5 V VSIO DC input voltage on SIO Output disabled VSSD -0.5 - 7 V Output enabled VSSD -0.5 - 6 V VIND Voltage at boost converter input VBAT Boost converter supply Conditions 0.5 - 5.5 V VSSD -0.5 - 5.5 V IVDDIO Current per VDDIO supply pin - - 100 mA IGPIO GPIO current -30 - 41 mA ISIO SIO current -49 - 28 mA IUSBIO USBIO current -56 - 59 mA VEXTREF ADC external reference inputs LU Latch up current[20] ESDHBM Electrostatic discharge voltage, Human body model ESDCDM Electrostatic discharge voltage, Charge device model Pins P0[3], P3[2] - - 2 V -140 - 140 mA VSSA tied to VSSD 2200 - - V VSSA not tied to VSSD 750 - - V 500 - - V Notes 18. Usage above the absolute maximum conditions listed in Table 11-1 may cause permanent damage to the device. Exposure to Absolute Maximum conditions for extended periods of time may affect device reliability. The Maximum Storage Temperature is 150 C in compliance with JEDEC Standard JESD22-A103, High Temperature Storage Life. When used below Absolute Maximum conditions but above normal operating conditions, the device may not operate to specification. 19. The VDDIO supply voltage must be greater than the maximum voltage on the associated GPIO pins. Maximum voltage on GPIO pin VDDIO VDDA. 20. Meets or exceeds JEDEC Spec EIA/JESD78 IC Latch-up Test. Document Number: 001-53304 Rev. *Z Page 70 of 137 PSoC(R) 3: CY8C34 Family Datasheet 11.2 Device Level Specifications Specifications are valid for -40 C TA 85 C and TJ 100 C, except where noted. Specifications are valid for 1.71 V to 5.5 V, except where noted. 11.2.1 Device Level Specifications Table 11-2. DC Specifications Parameter Description Conditions Min Typ[25] Max Units VDDA Analog supply voltage and input to analog Analog core regulator enabled core regulator 1.8 - 5.5 V VDDA Analog supply voltage, analog regulator bypassed Analog core regulator disabled 1.71 1.8 1.89 V VDDD Digital supply voltage relative to VSSD Digital core regulator enabled 1.8 - VDDA[21] - - VDDA + 0.1[27] VDDD Digital supply voltage, digital regulator bypassed Digital core regulator disabled 1.71 1.8 1.89 VDDIO[22] I/O supply voltage relative to VSSIO 1.71 - VDDA[21] - - VDDA + 0.1[27] VCCA Direct analog core voltage input (Analog regulator bypass) Analog core regulator disabled 1.71 1.8 1.89 V VCCD Direct digital core voltage input (Digital regulator bypass) Digital core regulator disabled 1.71 1.8 1.89 V V V V Active Mode Only IMO and CPU clock enabled. CPU executing simple loop from instruction buffer. IDD [23, 24] IMO enabled, bus clock and CPU clock enabled. CPU executing program from flash. VDDX = 2.7 V - 5.5 V; FCPU = 6 MHz[26] T = -40 C - 1.2 2.9 T = 25 C - 1.2 3.1 T = 85 C - 4.9 7.7 VDDX = 2.7 V - 5.5 V; FCPU = 3 MHz[26] T = -40 C - 1.3 2.9 T = 25 C - 1.6 3.2 T = 85 C - 4.8 7.5 VDDX = 2.7 V - 5.5 V; FCPU = 6 MHz T = -40 C - 2.1 3.7 T = 25 C - 2.3 3.9 T = 85 C - 5.6 8.5 VDDX = 2.7 V - 5.5 V; FCPU = 12 MHz[26] T = -40 C - 3.5 5.2 T = 25 C - 3.8 5.5 T = 85 C - 7.1 9.8 VDDX = 2.7 V - 5.5 V; FCPU = 24 MHz[26] T = -40 C - 6.3 8.1 T = 25 C - 6.6 8.3 T = 85 C - 10 13 VDDX = 2.7 V - 5.5 V; FCPU = 48 MHz[26] T = -40 C - 11.5 13.5 T = 25 C - 12 14 T = 85 C - 15.5 18.5 mA Notes 21. The power supplies can be brought up in any sequence however once stable VDDA must be greater than or equal to all other supplies. 22. The VDDIO supply voltage must be greater than the maximum voltage on the associated GPIO pins. Maximum voltage on GPIO pin VDDIO VDDA. 23. Total current for all power domains: digital (IDDD), analog (IDDA), and I/Os (IDDIO0, 1, 2, 3). Boost not included. All I/Os floating. 24. The current consumption of additional peripherals that are implemented only in programmed logic blocks can be found in their respective datasheets, available in PSoC Creator, the integrated design environment. To estimate total current, find the CPU current at the frequency of interest and add peripheral currents for your particular system from the device datasheet and component datasheets. 25. VDDX = 3.3 V. 26. Based on device characterization (Not Production tested). 27. Guaranteed by design, not production tested. Document Number: 001-53304 Rev. *Z Page 71 of 137 PSoC(R) 3: CY8C34 Family Datasheet Table 11-2. DC Specifications (continued) Parameter Description Min Typ[25] T = -40 C - 1.1 2.3 T = 25 C - 1.1 2.2 T = 85 C - 15 30 VDD = VDDIO = 2.7 V - 3.6 V T = -40 C - 1 2.2 T = 25 C - 1 2.1 Conditions Max Units [28] Sleep Mode CPU = OFF RTC = ON (= ECO32K ON, in low-power mode) Sleep timer = ON (= ILO ON at 1 kHz)[29] WDT = OFF I2C Wake = OFF Comparator = OFF POR = ON Boost = OFF SIO pins in single ended input, unregulated output mode VDD = VDDIO = 4.5 V - 5.5 V T = 85 C - 12 28 VDD = VDDIO = 1.71 V - 1.95 V[30] T = 25 C - 2.2 4.2 Comparator = ON CPU = OFF RTC = OFF Sleep timer = OFF WDT = OFF I2C Wake = OFF POR = ON Boost = OFF SIO pins in single ended input, unregulated output mode VDD = VDDIO = 2.7 V - 3.6 V[31] T = 25 C - 2.2 2.7 I2C Wake = ON CPU = OFF RTC = OFF Sleep timer = OFF WDT = OFF Comparator = OFF POR = ON Boost = OFF SIO pins in single ended input, unregulated output mode VDD = VDDIO = 2.7 V - 3.6 V[31] T = 25 C - 2.2 2.8 VDD = VDDIO = 4.5 V - 5.5 V T = -40 C - 0.2 1.5 T = 25 C - 0.5 1.5 T = 85 C - 4.1 5.3 A Hibernate Mode[28] Hibernate mode current All regulators and oscillators off SRAM retention GPIO interrupts are active Boost = OFF SIO pins in single ended input, unregulated output mode IDDAR IDDDR A VDD = VDDIO = 2.7 V - 3.6 V T = -40 C - 0.2 1.5 T = 25 C - 0.2 1.5 T = 85 C - 3.2 4.2 VDD = VDDIO = 1.71 V - 1.95 V[30] T = -40 C - 0.2 1.5 T = 25 C - 0.3 1.5 T = 85 C - 3.3 4.3 Analog current consumption while device VDDA 3.6 V is reset[32] VDDA 3.6 V - 0.3 0.6 mA - 1.4 3.3 mA Digital current consumption while device is VDDD 3.6 V reset[32] VDDD 3.6 V - 1.1 3.1 mA - 0.7 3.1 mA Document Number: 001-53304 Rev. *Z Page 72 of 137 PSoC(R) 3: CY8C34 Family Datasheet Figure 11-1. Active Mode Current vs FCPU, VDD = 3.3 V, Temperature = 25 C Figure 11-2. Active Mode Current vs Temperature and FCPU, VDD = 3.3 V Figure 11-3. Active Mode Current vs VDD and Temperature, FCPU = 24 MHz Notes 28. If VCCD and VCCA are externally regulated, the voltage difference between VCCD and VCCA must be less than 50 mV. 29. Sleep timer generates periodic interrupts to wake up the CPU. This specification applies only to those times that the CPU is off. 30. Externally regulated mode. 31. Based on device characterization (not production tested). 32. Based on device characterization (not production tested). USBIO pins tied to ground (VSSD). Document Number: 001-53304 Rev. *Z Page 73 of 137 PSoC(R) 3: CY8C34 Family Datasheet Table 11-3. AC Specifications[33] Parameter Description Conditions Min Typ Max Units FCPU CPU frequency 1.71 V VDDD 5.5 V DC - 50.01 MHz FBUSCLK Bus frequency 1.71 V VDDD 5.5 V DC - 50.01 MHz Svdd VDD ramp rate - - - 0.066 V/s TIO_INIT Time from VDDD/VDDA/VCCD/VCCA - IPOR to I/O ports set to their reset states - - 10 s TSTARTUP Time from VDDD/VDDA/VCCD/VCCA VCCA/VCCD = regulated from PRES to CPU executing code at VDDA/VDDD, no PLL used, IMO boot reset vector mode (12 MHz typ.) - - 74 s TSLEEP Wakeup from sleep mode - Application of non-LVD interrupt to beginning of execution of next CPU instruction - - 15 s THIBERNATE Wakeup from hibernate mode - Application of external interrupt to beginning of execution of next CPU instruction - - 100 s Figure 11-4. FCPU vs. VDD Vdd Voltage 5.5 V Valid Operating Region 3.3 V 1.71 V Valid Operating Region with SMP 0.5 V 0V DC 1 MHz 10 MHz 50 MHz CPU Frequency Note 33. Based on device characterization (Not production tested). Document Number: 001-53304 Rev. *Z Page 74 of 137 PSoC(R) 3: CY8C34 Family Datasheet 11.3 Power Regulators Specifications are valid for -40 C TA 85 C and TJ 100 C, except where noted. Specifications are valid for 1.71 V to 5.5 V, except where noted. 11.3.1 Digital Core Regulator Table 11-4. Digital Core Regulator DC Specifications Parameter Description VDDD Input voltage VCCD Output voltage Regulator output capacitor Conditions 10%, X5R ceramic or better. The two VCCD pins must be shorted together, with as short a trace as possible, see Power System on page 30 Figure 11-5. Regulators VCC vs VDD Min 1.8 - 0.9 Typ - 1.80 1 Max 5.5 - 1.1 Units V V F Figure 11-6. Digital Regulator PSRR vs Frequency and VDD 11.3.2 Analog Core Regulator Table 11-5. Analog Core Regulator DC Specifications Parameter Description VDDA Input voltage VCCA Output voltage Regulator output capacitor Conditions 10%, X5R ceramic or better Min 1.8 - 0.9 Typ - 1.80 1 Max 5.5 - 1.1 Units V V F Figure 11-7. Analog Regulator PSRR vs Frequency and VDD Document Number: 001-53304 Rev. *Z Page 75 of 137 PSoC(R) 3: CY8C34 Family Datasheet 11.3.3 Inductive Boost Regulator Unless otherwise specified, operating conditions are: VBAT = 0.5 V-3.6 V, VOUT = 1.8 V-5.0 V, IOUT = 0 mA-50 mA, LBOOST = 4.7 H-22 H, CBOOST = 22 F || 3 x 1.0 F || 3 x 0.1 F, CBAT = 22 F, IF = 1.0 A. Unless otherwise specified, all charts and graphs show typical values. Table 11-6. Inductive Boost Regulator DC Specifications Parameter Description Conditions [34] VOUT Boost output voltage VBAT Input voltage to boost[35] IOUT Output current Min Typ Max Units vsel = 1.8 V in register BOOST_CR0 vsel = 1.9 V in register BOOST_CR0 vsel = 2.0 V in register BOOST_CR0 vsel = 2.4 V in register BOOST_CR0 vsel = 2.7 V in register BOOST_CR0 vsel = 3.0 V in register BOOST_CR0 vsel = 3.3 V in register BOOST_CR0 vsel = 3.6 V in register BOOST_CR0 vsel = 5.0 V in register BOOST_CR0 IOUT = 0 mA-5 mA vsel = 1.8 V-2.0 V, TA = 0 C-70 C 1.71 1.81 1.90 2.16 2.43 2.70 2.97 3.24 4.50 0.5 1.8 1.90 2.00 2.40 2.70 3.00 3.30 3.60 5.00 - 1.89 2.00 2.10 2.64 2.97 3.30 3.63 3.96 5.50 0.8 V V V V V V V V V V IOUT = 0 mA-15 mA vsel = 1.8 V-5.0 V[36], TA = -10 C-85 C 1.6 - 3.6 V IOUT = 0 mA-25 mA vsel = 1.8 V-2.7 V, TA = -10 C-85 C 0.8 - 1.6 V IOUT = 0 mA-50 mA vsel = 1.8 V-3.3 V[36], TA = -40 C-85 C 1.8 - 2.5 V vsel = 1.8 V-3.3 V[36], TA = -10 C-85 C 1.3 - 2.5 V vsel = 2.5 V-5.0 V[36], TA = -10 C-85 C 2.5 - 3.6 V TA = 0 C-70 C VBAT = 0.5 V-0.8 V 0 - 5 mA TA = -10 C-85 C VBAT = 1.6 V-3.6 V 0 - 15 mA VBAT = 0.8 V-1.6 V 0 - 25 mA VBAT = 1.3 V-2.5 V 0 - 50 mA VBAT = 2.5 V-3.6 V 0 - 50 mA VBAT = 1.8 V-2.5 V 0 - 50 mA - - 700 mA - - 250 25 - - A A TA = -40 C-85 C ILPK Inductor peak current IQ Quiescent current RegLOAD Load regulation - - 10 % RegLINE Line regulation - - 10 % Boost active mode Boost sleep mode, IOUT < 1 A Notes 34. Listed vsel options are characterized. Additional vsel options are valid and guaranteed by design. 35. The boost will start at all valid VBAT conditions including down to VBAT = 0.5 V. 36. If VBAT is greater than or equal to VOUT boost setting, then VOUT will be less than VBAT due to resistive losses in the boost circuit. Document Number: 001-53304 Rev. *Z Page 76 of 137 PSoC(R) 3: CY8C34 Family Datasheet Table 11-7. Recommended External Components for Boost Circuit Parameter LBOOST Description Conditions Boost inductor Min Typ Max Units 4.7 H nominal 3.7 4.7 5.7 H 10 H nominal 8.0 10.0 12.0 H 22 H nominal 17.0 22.0 27.0 H CBOOST Total capacitance sum of VDDD, VDDA, VDDIO[37] 17.0 26.0 31.0 F CBAT Battery filter capacitor 17.0 22.0 27.0 F IF Schottky diode average forward current 1.0 - - A VR Schottky reverse voltage 20.0 - - V Figure 11-8. TA range over VBAT and VOUT Figure 11-9. IOUT range over VBAT and VOUT & & P$ & & 9%$79 9%$79 P$ P$ 1R%RRVW P$ 1R%RRVW & 92879 P$ 92879 Figure 11-10. LBOOST values over VBAT and VOUT + + ,287 P$++ ,287 P$+ 9%$79 + + + + + + + 1R%RRVW + 92879 Note 37. Based on device characterization (Not production tested). Document Number: 001-53304 Rev. *Z Page 77 of 137 PSoC(R) 3: CY8C34 Family Datasheet Figure 11-11. Efficiency vs VBAT, LBOOST = 4.7 H [38] Figure 11-12. Efficiency vs VBAT, LBOOST = 10 H [38] 100% 95% Vout = 1.8 V 95% 90% Vout = 2.4 V 90% 85% Vout = 3.3 V 85% 80% % Efficiency % Efficiency 100% Vout = 5.0 V 80% 75% Vout = 1.8 V 70% Vout = 2.4 V 65% 65% Vout = 3 3.3 3V 60% 60% Vout = 5.0 V 55% 55% 75% 70% 50% 50% 0 0.5 1 1.5 2 2.5 3 3.5 0 4 0.5 1 1.5 2 2.5 3 3.5 4 VBAT, V VBAT, V Figure 11-13. Efficiency vs VBAT, LBOOST = 22 H [38] Figure 11-14. VRIPPLE vs VBAT [38] 100% 300 95% 250 90% 200 VRIPPLE, mV % Efficiency 85% 80% Vout = 1.8 V 75% Vout = 2.4 V 70% 150 Lboost = 4.7 uH 100 Lboost = 10 uH Vout = 3.3 V 65% Lboost = 22 uH 50 60% 55% 0 0 50% 0 0.5 1 1.5 2 2.5 3 3.5 4 0.5 1 1.5 2 2.5 3 3.5 4 VBAT, V VBAT, V Note 38. Typical example. Actual values may vary depending on external component selection, PCB layout, and other design parameters. Document Number: 001-53304 Rev. *Z Page 78 of 137 PSoC(R) 3: CY8C34 Family Datasheet 11.4 Inputs and Outputs Specifications are valid for -40 C TA 85 C and TJ 100 C, except where noted. Specifications are valid for 1.71 V to 5.5 V, except where noted. Unless otherwise specified, all charts and graphs show typical values. When the power supplies ramp up, there are low-impedance connections between each GPIO pin and its VDDIO supply. This causes the pin voltages to track VDDIO until both VDDIO and VDDA reach the IPOR voltage, which can be as high as 1.45 V. At that point, the low-impedance connections no longer exist and the pins change to their normal NVL settings. 11.4.1 GPIO Table 11-9. GPIO DC Specifications Parameter Description Conditions Min Typ Max Units VIH Input voltage high threshold CMOS Input, PRT[x]CTL = 0 0.7 VDDIO - - V VIL Input voltage low threshold CMOS Input, PRT[x]CTL = 0 - - 0.3 VDDIO V VIH Input voltage high threshold LVTTL Input, PRT[x]CTL = 1,VDDIO < 2.7 V 0.7 x VDDIO - - V VIH Input voltage high threshold LVTTL Input, PRT[x]CTL = 1, VDDIO V 2.0 - - V VIL Input voltage low threshold LVTTL Input, PRT[x]CTL = 1,VDDIO < 2.7 V - - 0.3 x VDDIO V VIL Input voltage low threshold LVTTL Input, PRT[x]CTL = 1, VDDIO V - - 0.8 V VOH Output voltage high IOH = 4 mA at 3.3 VDDIO VDDIO - 0.6 - - V IOH = 1 mA at 1.8 VDDIO VDDIO - 0.5 - - V IOL = 8 mA at 3.3 VDDIO - - 0.6 V IOL = 4 mA at 1.8 VDDIO - - 0.6 V VOL Output voltage low IOL = 3 mA at 3.3 VDDIO Rpullup Pull-up resistor Rpulldown Pull-down resistor - - 0.4 V 3.5 5.6 8.5 k 3.5 5.6 8.5 k IIL Input leakage current (absolute value)[39] 25 C, VDDIO = 3.0 V - - 2 nA CIN Input capacitance[39] GPIOs not shared with opamp outputs, MHz ECO or kHzECO - 4 7 pF GPIOs shared with MHz ECO or kHzECO[40] - 5 7 pF GPIOs shared with opamp outputs - - 18 pF VH Input voltage hysteresis (Schmitt-Trigger)[39] - 40 - mV Idiode Current through protection diode to VDDIO and VSSIO - - 100 A Rglobal Resistance pin to analog global bus 25 C, VDDIO = 3.0 V - 320 - Rmux Resistance pin to analog mux bus - 220 - 25 C, VDDIO = 3.0 V Notes 39. Based on device characterization (Not production tested). 40. For information on designing with PSoC oscillators, refer to the application note, AN54439 - PSoC(R) 3 and PSoC 5 External Oscillator. Document Number: 001-53304 Rev. *Z Page 79 of 137 PSoC(R) 3: CY8C34 Family Datasheet Figure 11-15. GPIO Output High Voltage and Current Figure 11-16. GPIO Output Low Voltage and Current Table 11-10. GPIO AC Specifications Parameter TriseF TfallF TriseS TfallS Fgpioout Fgpioin Description Rise time in Fast Strong Mode[41] Fall time in Fast Strong Mode[41] Rise time in Slow Strong Mode[41] Fall time in Slow Strong Mode[41] GPIO output operating frequency 2.7 V < VDDIO < 5.5 V, fast strong drive mode 1.71 V < VDDIO < 2.7 V, fast strong drive mode 3.3 V < VDDIO < 5.5 V, slow strong drive mode 1.71 V < VDDIO < 3.3 V, slow strong drive mode GPIO input operating frequency 1.71 V < VDDIO < 5.5 V Conditions 3.3 V VDDIO Cload = 25 pF 3.3 V VDDIO Cload = 25 pF 3.3 V VDDIO Cload = 25 pF 3.3 V VDDIO Cload = 25 pF Min - - - - Typ - - - - Max 6 6 60 60 Units ns ns ns ns 90/10% VDDIO into 25 pF - - 33 MHz 90/10% VDDIO into 25 pF - - 20 MHz 90/10% VDDIO into 25 pF - - 7 MHz 90/10% VDDIO into 25 pF - - 3.5 MHz 90/10% VDDIO - - 33 MHz Note 41. Based on device characterization (Not production tested). Document Number: 001-53304 Rev. *Z Page 80 of 137 PSoC(R) 3: CY8C34 Family Datasheet 11.4.2 SIO Table 11-11. SIO DC Specifications Parameter Vinmax Description Maximum input voltage Vinref Input voltage reference (Differential 0.5 input mode) Output voltage reference (Regulated output mode) VDDIO > 3.7 1 VDDIO < 3.7 1 Input voltage high threshold 0.7 VDDIO GPIO mode CMOS input Differential input mode[42] Hysteresis disabled SIO_ref + 0.2 Input voltage low threshold - GPIO mode CMOS input Differential input mode[42] Hysteresis disabled - Output voltage high VDDIO - 0.4 Unregulated mode IOH = 4 mA, VDDIO = 3.3 V Regulated mode[42] IOH = 1 mA SIO_ref - 0.65 Regulated mode[42] IOH = 0.1 mA SIO_ref - 0.3 Output voltage low VDDIO = 3.30 V, IOL = 25 mA - - VDDIO = 3.30 V, IOL = 20 mA VDDIO = 1.80 V, IOL = 4 mA - Pull-up resistor 3.5 Pull-down resistor 3.5 Input leakage current (absolute value)[43] VIH < Vddsio 25 C, Vddsio = 3.0 V, VIH = 3.0 V - VIH > Vddsio 25 C, Vddsio = 0 V, VIH = 3.0 V - Input capacitance[43] - Input voltage hysteresis Single ended mode (GPIO mode) - (Schmitt-Trigger)[43] Differential mode - - Current through protection diode to VSSIO Voutref VIH VIL VOH VOL Rpullup Rpulldown IIL CIN VH Idiode Conditions All allowed values of VDDIO and VDDD, see Section 11.1 Min - Typ - Max 5.5 Units V - 0.52 VDDIO V - - VDDIO - 1 VDDIO - 0.5 V V - - - - V V - - 0.3 VDDIO SIO_ref - 0.2 V V - - - - - - 5.6 5.6 - SIO_ref + 0.2 SIO_ref + 0.2 0.8 0.4 0.4 8.5 8.5 V V V V V V k k - - - 40 35 - 14 10 7 - - 100 nA A pF mV mV A Notes 42. See Figure 6-10 on page 38 and Figure 6-13 on page 42 for more information on SIO reference. 43. Based on device characterization (Not production tested). Document Number: 001-53304 Rev. *Z Page 81 of 137 PSoC(R) 3: CY8C34 Family Datasheet Figure 11-17. SIO Output High Voltage and Current, Unregulated Mode Figure 11-18. SIO Output Low Voltage and Current, Unregulated Mode Figure 11-19. SIO Output High Voltage and Current, Regulated Mode Table 11-12. SIO AC Specifications Parameter TriseF TfallF TriseS TfallS Description Rise time in Fast Strong Mode (90/10%)[44] Fall time in Fast Strong Mode (90/10%)[44] Rise time in Slow Strong Mode (90/10%)[44] Fall time in Slow Strong Mode (90/10%)[44] Conditions Cload = 25 pF, VDDIO = 3.3 V Min - Typ - Max 12 Units ns Cload = 25 pF, VDDIO = 3.3 V - - 12 ns Cload = 25 pF, VDDIO = 3.0 V - - 75 ns Cload = 25 pF, VDDIO = 3.0 V - - 60 ns Note 44. Based on device characterization (Not production tested). Document Number: 001-53304 Rev. *Z Page 82 of 137 PSoC(R) 3: CY8C34 Family Datasheet Table 11-12. SIO AC Specifications (continued) Parameter Fsioout Fsioin Description SIO output operating frequency 2.7 V < VDDIO < 5.5 V, Unregulated output (GPIO) mode, fast strong drive mode 1.71 V < VDDIO < 2.7 V, Unregulated output (GPIO) mode, fast strong drive mode 3.3 V < VDDIO < 5.5 V, Unregulated output (GPIO) mode, slow strong drive mode 1.71 V < VDDIO < 3.3 V, Unregulated output (GPIO) mode, slow strong drive mode 2.7 V < VDDIO < 5.5 V, Regulated output mode, fast strong drive mode 1.71 V < VDDIO < 2.7 V, Regulated output mode, fast strong drive mode 1.71 V < VDDIO < 5.5 V, Regulated output mode, slow strong drive mode SIO input operating frequency 1.71 V < VDDIO < 5.5 V Conditions Min Typ Max Units 90/10% VDDIO into 25 pF - - 33 MHz 90/10% VDDIO into 25 pF - - 16 MHz 90/10% VDDIO into 25 pF - - 5 MHz 90/10% VDDIO into 25 pF - - 4 MHz Output continuously switching into 25 pF Output continuously switching into 25 pF Output continuously switching into 25 pF - - 20 MHz - - 10 MHz - - 2.5 MHz 90/10% VDDIO - - 33 MHz Figure 11-20. SIO Output Rise and Fall Times, Fast Strong Mode, VDDIO = 3.3 V, 25 pF Load Document Number: 001-53304 Rev. *Z Figure 11-21. SIO Output Rise and Fall Times, Slow Strong Mode, VDDIO = 3.3 V, 25 pF Load Page 83 of 137 PSoC(R) 3: CY8C34 Family Datasheet Table 11-13. SIO Comparator Specifications[45] Parameter Vos Description Offset voltage Conditions Min Typ Max Units VDDIO = 2 V - - 68 mV VDDIO = 2.7 V - - 72 VDDIO = 5.5 V TCVos Offset voltage drift with temp CMRR Common mode rejection ratio Tresp - - 82 - - 250 V/C VDDIO = 2 V 30 - - dB VDDIO = 2.7 V 35 - - VDDIO = 5.5 V 40 - - - - 30 Response time ns 11.4.3 USBIO For operation in GPIO mode, the standard range for VDDD applies, see Device Level Specifications on page 71. Table 11-14. USBIO DC Specifications Parameter Rusbi Rusba Vohusb Description USB D+ pull-up resistance USB D+ pull-up resistance Static output high Volusb Static output low Vihgpio Vilgpio Vohgpio Volgpio Vdi Vcm Input voltage high, GPIO mode Input voltage low, GPIO mode Output voltage high, GPIO mode Output voltage low, GPIO mode Differential input sensitivity Differential input common mode range Single ended receiver threshold PS/2 pull-up resistance Vse Rps2 Rext Zo CIN IIL[45] External USB series resistor USB driver output impedance USB transceiver input capacitance Input leakage current (absolute value) Conditions With idle bus While receiving traffic 15 k 5% to VSS, internal pull-up enabled 15 k 5% to VSS, internal pull-up enabled VDDD 3 V VDDD 3 V IOH = 4 mA, VDDD 3 V IOL = 4 mA, VDDD 3 V |(D+) - (D-)| In PS/2 mode, with PS/2 pull-up enabled In series with each USB pin Including Rext 25 C, VDDD = 3.0 V Min 0.900 1.425 2.8 Typ - - - Max 1.575 3.090 3.6 Units k k V - - 0.3 V 2 - 2.4 - - 0.8 - - - - - - - 0.8 - 0.3 0.2 2.5 V V V V V V 0.8 3 - - 2 7 V k 21.78 (-1%) 28 - - 22 22.22 (+1%) 44 20 2 - - - pF nA Note 45. Based on device characterization (Not production tested). Document Number: 001-53304 Rev. *Z Page 84 of 137 PSoC(R) 3: CY8C34 Family Datasheet Figure 11-22. USBIO Output High Voltage and Current, GPIO Mode Figure 11-23. USBIO Output Low Voltage and Current, GPIO Mode Table 11-15. USBIO AC Specifications Parameter Description Tdrate Full-speed data rate average bit rate Tjr1 Tjr2 Tdj1 Tdj2 Tfdeop Tfeopt Tfeopr Tfst Fgpio_out Tr_gpio Tf_gpio Conditions Receiver data jitter tolerance to next transition Receiver data jitter tolerance to pair transition Driver differential jitter to next transition Driver differential jitter to pair transition Source jitter for differential transition to SE0 transition Source SE0 interval of EOP Receiver SE0 interval of EOP Width of SE0 interval during differential transition GPIO mode output operating 3 V VDDD 5.5 V frequency VDDD = 1.71 V Rise time, GPIO mode, 10%/90% VDDD VDDD > 3 V, 25 pF load VDDD = 1.71 V, 25 pF load Fall time, GPIO mode, 90%/10% VDDD VDDD > 3 V, 25 pF load VDDD = 1.71 V, 25 pF load Document Number: 001-53304 Rev. *Z Min 12 - 0.25% Typ 12 Units MHz - Max 12 + 0.25% 8 -8 -5 - 5 ns -3.5 -4 -2 - - - 3.5 4 5 ns ns ns 160 82 - - - - 175 - 14 ns ns ns - - - - - - - - - - - - 20 6 12 40 12 40 MHz MHz ns ns ns ns ns Page 85 of 137 PSoC(R) 3: CY8C34 Family Datasheet Figure 11-24. USBIO Output Rise and Fall Times, GPIO Mode, VDDD = 3.3 V, 25 pF Load Table 11-16. USB Driver AC Specifications Parameter Description Tr Transition rise time Tf Transition fall time TR Rise/fall time matching Vcrs Output signal crossover voltage Document Number: 001-53304 Rev. *Z Conditions VUSB_5, VUSB_3.3, see USB DC Specifications on page 107 Min - - 90% Typ - - - Max 20 20 111% Units ns ns 1.3 - 2 V Page 86 of 137 PSoC(R) 3: CY8C34 Family Datasheet 11.4.4 XRES Table 11-17. XRES DC Specifications Parameter VIH VIL Rpullup CIN VH Idiode Description Input voltage high threshold Input voltage low threshold Pull-up resistor Input capacitance[46] Input voltage hysteresis (Schmitt-Trigger)[46] Current through protection diode to VDDIO and VSSIO Conditions Min 0.7 VDDIO - 3.5 - - Typ - - 5.6 3 100 Max - 0.3 VDDIO 8.5 - - Units V V k pF mV - - 100 A Table 11-18. XRES AC Specifications Parameter TRESET Description Reset pulse width Conditions Min Typ Max Units 1 - - s Note 46. Based on device characterization (Not production tested). Document Number: 001-53304 Rev. *Z Page 87 of 137 PSoC(R) 3: CY8C34 Family Datasheet 11.5 Analog Peripherals Specifications are valid for -40 C TA 85 C and TJ 100 C, except where noted. Specifications are valid for 1.71 V to 5.5 V, except where noted. 11.5.1 Opamp Table 11-19. Opamp DC Specifications Parameter Description VIOFF Input offset voltage Vos Input offset voltage Conditions Operating temperature -40 C to 70 C Min Typ Max Units - - 2 mV - - 2.5 mV - - 2 mV V / C TCVos Input offset voltage drift with temperature Power mode = high - - 30 Ge1 Gain error, unity gain buffer mode Rload = 1 k - - 0.1 % Cin Input capacitance Routing from pin - - 18 pF Vo Output voltage range 1 mA, source or sink, power mode = VSSA + 0.05 high - VDDA - 0.05 V Iout Output current capability, source or sink VSSA + 500 mV Vout VDDA -500 mV, VDDA > 2.7 V 25 - - mA VSSA + 500 mV Vout VDDA -500 mV, 1.7 V = VDDA 2.7 V 16 - - mA Power mode = min - 250 400 uA Idd Quiescent current Power mode = low - 250 400 uA Power mode = med - 330 950 uA Power mode = high - 1000 2500 uA CMRR Common mode rejection ratio 80 - - dB PSRR Power supply rejection ratio VDDA 2.7 V 85 - - dB 70 - - dB Input bias current[47] VDDA < 2.7 V IIB 25 C - 10 - pA Figure 11-25. Opamp Voffset Histogram, 3388 samples/847 parts, 25 C, VDDA = 5 V Figure 11-26. Opamp Voffset vs Temperature, VDDA = 5V Note 47. Based on device characterization (Not production tested). Document Number: 001-53304 Rev. *Z Page 88 of 137 PSoC(R) 3: CY8C34 Family Datasheet Figure 11-27. Opamp Voffset vs Vcommon and VDDA, 25 C Figure 11-28. Opamp Output Voltage vs Load Current and Temperature, High Power Mode, 25 C, VDDA = 2.7 V Figure 11-29. Opamp Operating Current vs VDDA and Power Mode Table 11-20. Opamp AC Specifications Parameter Description GBW Gain-bandwidth product SR Slew rate, 20% - 80% en Input noise density Document Number: 001-53304 Rev. *Z Conditions Power mode = minimum, 15 pF load Power mode = low, 15 pF load Power mode = medium, 200 pF load Power mode = high, 200 pF load Power mode = low, 15 pF load Power mode = medium, 200 pF load Power mode = high, 200 pF load Power mode = high, VDDA = 5 V, at 100 kHz Min 1 2 1 3 1.1 0.9 3 - Typ - - - - - - - 45 Max - - - - - - - - Units MHz MHz MHz MHz V/s V/s V/s nV/sqrtHz Page 89 of 137 PSoC(R) 3: CY8C34 Family Datasheet Figure 11-30. Opamp Noise vs Frequency, Power Mode = High, VDDA = 5V Figure 11-31. Opamp Step Response, Rising Figure 11-32. Opamp Step Response, Falling Document Number: 001-53304 Rev. *Z Page 90 of 137 PSoC(R) 3: CY8C34 Family Datasheet 11.5.2 Delta-sigma ADC Unless otherwise specified, operating conditions are: Operation in continuous sample mode fclk = 6.144 MHz Reference = 1.024 V internal reference bypassed on P3.2 or P0.3 Unless otherwise specified, all charts and graphs show typical values Table 11-21. 12-bit Delta-sigma ADC DC Specifications Parameter Description Conditions Resolution Number of channels, single ended Number of channels, differential Monotonic Ge Gain error Gd Gain drift Vos Input offset voltage TCVos Temperature coefficient, input offset voltage Differential pair is formed using a pair of GPIOs. Yes Buffered, buffer gain = 1, Range = 1.024 V, 25 C Buffered, buffer gain = 1, Range = 1.024 V Buffered, 12-bit mode Buffer gain = 1, 12-bit, Range = 1.024 V [48] INL12 DNL12 INL8 DNL8 Rin_Buff Input voltage range, single ended Input voltage range, differential unbuffered[48] Input voltage range, differential, buffered[48] Integral non linearity[48] Differential non linearity[48] Integral non linearity[48] Differential non linearity[48] ADC input resistance Rin_ADC12 ADC input resistance Range = 1.024 V, unbuffered Range = 1.024 V, unbuffered Range = 1.024 V, unbuffered Range = 1.024 V, unbuffered Input buffer used Input buffer bypassed, 12 bit, Range = 1.024 V Rin_ExtRef ADC external reference input resistance ADC external reference input voltage, see Vextref also internal reference in Voltage Reference Pins P0[3], P3[2] on page 93 Current Consumption IDD_12 IDDA + IDDD current consumption, 12 bit[48] 192 ksps, unbuffered [48] Buffer current consumption IBUFF Min 8 Typ - Units bits - Max 12 No. of GPIO No. of GPIO/2 - - - - - - - - 0.2 % - - 50 ppm/C - - 0.1 mV - - 1 V/C VSSA VSSA VSSA - - - - 10 - - - - - - - - VDDA VDDA VDDA - 1 1 1 1 1 - V V V LSB LSB LSB LSB M - 148[49] - k - 70[49, 50] - k 0.9 - 1.3 V - - - - 1.95 2.5 mA mA - - - Notes 48. Based on device characterization (Not production tested). 49. By using switched capacitors at the ADC input an effective input resistance is created. Holding the gain and number of bits constant, the resistance is proportional to the inverse of the clock frequency. This value is calculated, not measured. For more information see the Technical Reference Manual. 50. Recommend an external reference device with an output impedance <100 , for example, the LM185/285/385 family. A 1-F capacitor is recommended. For more information, see AN61290 - PSoC(R) 3 and PSoC 5LP Hardware Design Considerations. Document Number: 001-53304 Rev. *Z Page 91 of 137 PSoC(R) 3: CY8C34 Family Datasheet Table 11-22. Delta-sigma ADC AC Specifications Parameter Description Conditions Startup time Total harmonic distortion[51] THD Min Typ Max Units - - 4 Samples Buffer gain = 1, 12-bit, Range = 1.024 V - - 0.0032 % 12-Bit Resolution Mode SR12 Sample rate, continuous, high power[51] Range = 1.024 V, unbuffered 4 - 192 ksps BW12 Input bandwidth at max sample rate[51] Range = 1.024 V, unbuffered - 44 - kHz Range = 1.024 V, unbuffered 66 - - dB Range = 1.024 V, unbuffered 8 - 384 ksps SINAD12int Signal to noise ratio, 12-bit, internal reference[51] 8-Bit Resolution Mode Sample rate, continuous, high power[51] SR8 rate[51] BW8 Input bandwidth at max sample Range = 1.024 V, unbuffered - 88 - kHz SINAD8int Signal to noise ratio, 8-bit, internal reference[51] Range = 1.024 V, unbuffered 43 - - dB Table 11-23. Delta-sigma ADC Sample Rates, Range = 1.024 V Continuous Multi-Sample Resolution, Bits Min Max Min Max 8 8000 384000 1911 91701 9 6400 307200 1543 74024 10 5566 267130 1348 64673 11 4741 227555 1154 55351 12 4000 192000 978 46900 Figure 11-33. Delta-sigma ADC IDD vs sps, Range = 1.024 V, Continuous Sample Mode, Input Buffer Bypassed Note 51. Based on device characterization (Not production tested). Document Number: 001-53304 Rev. *Z Page 92 of 137 PSoC(R) 3: CY8C34 Family Datasheet 11.5.3 Voltage Reference Table 11-24. Voltage Reference Specifications See also ADC external reference specifications in Section 11.5.2. Parameter VREF Description Conditions Precision reference voltage Initial trimming, 25 C Min Typ Max Units 1.014 (-1%) 1.024 1.034 (+1%) V Min Typ Max Units 11.5.4 Analog Globals Table 11-25. Analog Globals Specifications Parameter Description Conditions Rppag Resistance pin-to-pin through P2[4], VDDA = 3 V AGL0, DSM INP, AGL1, P2[5][52] - 1472 2200 Rppmuxbus Resistance pin-to-pin through P2[3], VDDA = 3 V amuxbusL, P2[4][52] - 706 1100 Min Typ 11.5.5 Comparator Table 11-26. Comparator DC Specifications Parameter VOS Max Units Input offset voltage in fast mode Description Factory trim, VDDA > 2.7 V, VIN 0.5 V - 10 mV Input offset voltage in slow mode Factory trim, Vin 0.5 V - 9 mV Input offset voltage in fast Conditions mode[53] Custom trim - - 4 mV Input offset voltage in slow mode[53] Custom trim - - 4 mV Input offset voltage in ultra low-power mode - 12 - mV VDDA 4.6 V VHYST Hysteresis Hysteresis enable mode - 10 32 mV VICM Input common mode voltage High current / fast mode VSSA - VDDA V Low current / slow mode VSSA - VDDA V Ultra low power mode VDDA 4.6 V VSSA - VDDA - 1.15 CMRR ICMP Common mode rejection ratio - 50 - dB [54] High current mode/fast mode - - 400 A Low current mode/slow mode[54] - - 100 A - 6 - A [54] Ultra low-power mode VDDA 4.6 V Table 11-27. Comparator AC Specifications Parameter Description Min Typ Max Units 50 mV overdrive, measured pin-to-pin - 75 110 ns Response time, low current mode[54] 50 mV overdrive, measured pin-to-pin - 155 200 ns Response time, ultra low-power mode[54] - 55 - s Response time, high current mode[54] TRESP Conditions 50 mV overdrive, measured pin-to-pin, VDDA 4.6 V Notes 52. The resistance of the analog global and analog mux bus is high if VDDA 2.7 V, and the chip is in either sleep or hibernate mode. Use of analog global and analog mux bus under these conditions is not recommended. 53. The recommended procedure for using a custom trim value for the on-chip comparators can be found in the TRM. 54. Based on device characterization (Not production tested). Document Number: 001-53304 Rev. *Z Page 93 of 137 PSoC(R) 3: CY8C34 Family Datasheet 11.5.6 Current Digital-to-analog Converter (IDAC) All specifications are based on use of the low-resistance IDAC output pins (see Pin Descriptions on page 11 for details). See the IDAC component data sheet in PSoC Creator for full electrical specifications and APIs. Unless otherwise specified, all charts and graphs show typical values. Table 11-28. IDAC DC Specifications Parameter Description Conditions Min Typ Max Units - - 8 bits Range = 2.04 mA, code = 255, VDDA 2.7 V, Rload = 600 - 2.04 - mA Range = 2.04 mA, high speed mode, code = 255, VDDA 2.7 V, Rload = 300 - 2.04 - mA Range = 255 A, code = 255, Rload = 600 - 255 - A Range = 31.875 A, code = 255, Rload = 600 - 31.875 - A - - Yes Resolution IOUT Output current at code = 255 Monotonicity Ezs Zero scale error Eg Gain error TC_Eg INL DNL Vcompliance Temperature coefficient of gain error Integral nonlinearity Differential nonlinearity Dropout voltage, source or sink mode Document Number: 001-53304 Rev. *Z - 0 1 LSB Range = 2.04 mA, 25 C - - 2.5 % Range = 255 A, 25 C - - 2.5 % Range = 31.875 A, 25 C - - 3.5 % Range = 2.04 mA - - 0.04 % / C Range = 255 A - - 0.04 % / C Range = 31.875 A - - 0.05 % / C Sink mode, range = 255 A, Codes 8 - 255, Rload = 2.4 k, Cload = 15 pF - 0.9 1 LSB Source mode, range = 255 A, Codes 8 - 255, Rload = 2.4 k, Cload = 15 pF - 1.2 1.6 LSB Sink mode, range = 255 A, Rload = 2.4 k, Cload = 15 pF - 0.3 1 LSB Source mode, range = 255 A, Rload = 2.4 k, Cload = 15 pF - 0.3 1 LSB Voltage headroom at max current, RLOAD to VDDA or RLOAD to VSSA, VDIFF from VDDA 1 - - V Page 94 of 137 PSoC(R) 3: CY8C34 Family Datasheet Table 11-28. IDAC DC Specifications (continued) Parameter IDD Description Operating current, code = 0 Conditions Min Typ Max Units Low speed mode, source mode, range = 31.875 A - 44 100 A Low speed mode, source mode, range = 255 A, - 33 100 A Low speed mode, source mode, range = 2.04 mA - 33 100 A Low speed mode, sink mode, range = 31.875 A - 36 100 A Low speed mode, sink mode, range = 255 A - 33 100 A Low speed mode, sink mode, range = 2.04 mA - 33 100 A High speed mode, source mode, range = 31.875 A - 310 500 A High speed mode, source mode, range = 255 A - 305 500 A High speed mode, source mode, range = 2.04 mA - 305 500 A High speed mode, sink mode, range = 31.875 A - 310 500 A High speed mode, sink mode, range = 255 A - 300 500 A High speed mode, sink mode, range = 2.04 mA - 300 500 A Figure 11-34. IDAC INL vs Input Code, Range = 255 A, Source Mode Document Number: 001-53304 Rev. *Z Figure 11-35. IDAC INL vs Input Code, Range = 255 A, Sink Mode Page 95 of 137 PSoC(R) 3: CY8C34 Family Datasheet Figure 11-36. IDAC DNL vs Input Code, Range = 255 A, Source Mode Figure 11-37. IDAC DNL vs Input Code, Range = 255 A, Sink Mode Figure 11-38. IDAC INL vs Temperature, Range = 255 A, High speed mode Figure 11-39. IDAC DNL vs Temperature, Range = 255 A, High speed mode Document Number: 001-53304 Rev. *Z Page 96 of 137 PSoC(R) 3: CY8C34 Family Datasheet Figure 11-40. IDAC Full Scale Error vs Temperature, Range = 255 A, Source Mode Figure 11-41. IDAC Full Scale Error vs Temperature, Range = 255 A, Sink Mode Figure 11-42. IDAC Operating Current vs Temperature, Range = 255 A, Code = 0, Source Mode Figure 11-43. IDAC Operating Current vs Temperature, Range = 255 A, Code = 0, Sink Mode Document Number: 001-53304 Rev. *Z Page 97 of 137 PSoC(R) 3: CY8C34 Family Datasheet Table 11-29. IDAC AC Specifications Parameter Description Conditions Min Typ Max Units FDAC Update rate - - 8 Msps TSETTLE Settling time to 0.5 LSB Range = 31.875 A or 255 A, full scale transition, High speed mode, 600 15-pF load - - 125 ns Current noise Range = 255 A, source mode, High speed mode, VDDA = 5 V, 10 kHz - 340 - pA/sqrtHz Figure 11-44. IDAC Step Response, Codes 0x40 - 0xC0, 255 A Mode, Source Mode, High speed mode, VDDA = 5 V Figure 11-45. IDAC Glitch Response, Codes 0x7F - 0x80, 255 A Mode, Source Mode, High speed mode, VDDA = 5 V Figure 11-46. IDAC PSRR vs Frequency Figure 11-47. IDAC Current Noise, 255 A Mode, Source Mode, High speed mode, VDDA = 5 V 60 PSRR, dB P 50 40 30 20 10 0 0.1 1 10 100 1000 10000 Frequency, kHz 255 A, code 0x7F Document Number: 001-53304 Rev. *Z 255 A, code 0xFF Page 98 of 137 PSoC(R) 3: CY8C34 Family Datasheet 11.5.7 Voltage Digital to Analog Converter (VDAC) See the VDAC component datasheet in PSoC Creator for full electrical specifications and APIs. Unless otherwise specified, all charts and graphs show typical values. Table 11-30. VDAC DC Specifications Parameter Description Conditions Resolution Min Typ Max Units - 8 - bits INL1 Integral nonlinearity 1 V scale - 2.1 2.5 LSB INL4 Integral nonlinearity[55] 4 V scale - 2.1 2.5 LSB DNL1 Differential nonlinearity 1 V scale - 0.3 1 LSB nonlinearity[55] DNL4 Differential 4 V scale - 0.3 1 LSB Rout Output resistance 1 V scale - 4 - k 4 V scale - 16 - k VOUT Output voltage range, code = 255 1 V scale - 1.02 - V - 4.08 - V - - Yes - 4 V scale, VDDA = 5 V Monotonicity VOS Zero scale error Eg Gain error TC_Eg IDD Operating current - 0 0.9 LSB 1 V scale - - 2.5 % 4 V scale - - 2.5 % Temperature coefficient, gain error 1 V scale - - 0.03 %FSR / C Figure 11-48. VDAC INL vs Input Code, 1 V Mode 4 V scale - - 0.03 %FSR / C Low speed mode - - 100 A High speed mode - - 500 A Figure 11-49. VDAC DNL vs Input Code, 1 V Mode Note 55. Based on device characterization (Not production tested). Document Number: 001-53304 Rev. *Z Page 99 of 137 PSoC(R) 3: CY8C34 Family Datasheet Figure 11-50. VDAC INL vs Temperature, 1 V Mode Figure 11-51. VDAC DNL vs Temperature, 1 V Mode Figure 11-52. VDAC Full Scale Error vs Temperature, 1 V Mode Figure 11-53. VDAC Full Scale Error vs Temperature, 4 V Mode Figure 11-54. VDAC Operating Current vs Temperature, 1V Mode, Low speed mode Figure 11-55. VDAC Operating Current vs Temperature, 1 V Mode, High speed mode Document Number: 001-53304 Rev. *Z Page 100 of 137 PSoC(R) 3: CY8C34 Family Datasheet Table 11-31. VDAC AC Specifications Parameter FDAC Description Conditions Update rate Min Typ Max Units 1 V scale - - 1000 ksps 4 V scale - - 250 ksps - 0.45 1 s TsettleP Settling time to 0.1%, step 25% to 1 V scale, Cload = 15 pF 75% 4 V scale, Cload = 15 pF - 0.8 3.2 s TsettleN Settling time to 0.1%, step 75% to 1 V scale, Cload = 15 pF 25% - 0.45 1 s 4 V scale, Cload = 15 pF - 0.7 3 s Range = 1 V, High speed mode, VDDA = 5 V, 10 kHz - 750 - nV/sqrtHz Voltage noise Figure 11-56. VDAC Step Response, Codes 0x40 - 0xC0, 1 V Mode, High speed mode, VDDA = 5 V Figure 11-57. VDAC Glitch Response, Codes 0x7F - 0x80, 1 V Mode, High speed mode, VDDA = 5 V Figure 11-58. VDAC PSRR vs Frequency Figure 11-59. VDAC Voltage Noise, 1 V Mode, High speed mode, VDDA = 5 V 50 PSRR, dB P 40 30 20 10 0 0.1 1 10 Frequency, kHz 4 V, code 0x7F Document Number: 001-53304 Rev. *Z 100 1000 4 V, code 0xFF Page 101 of 137 PSoC(R) 3: CY8C34 Family Datasheet 11.5.8 Mixer The mixer is created using a SC/CT analog block; see the Mixer component data sheet in PSoC Creator for full electrical specifications and APIs. Table 11-32. Mixer DC Specifications Parameter VOS G Description Conditions Min Typ Max Units - - 15 mV Quiescent current - 0.9 2 mA Gain - 0 - dB Min Typ Max Units Input offset voltage Table 11-33. Mixer AC Specifications Parameter Description Conditions fLO Local oscillator frequency Down mixer mode - - 4 MHz fin Input signal frequency Down mixer mode - - 14 MHz fLO Local oscillator frequency Up mixer mode - - 1 MHz fin Input signal frequency Up mixer mode - - 1 MHz SR Slew rate 3 - - V/s 11.5.9 Transimpedance Amplifier The TIA is created using a SC/CT analog block; see the TIA component data sheet in PSoC Creator for full electrical specifications and APIs. Table 11-34. Transimpedance Amplifier (TIA) DC Specifications Parameter Description VIOFF Input offset voltage Rconv Conversion resistance[56] Conditions Min Typ Max Units - - 10 mV R = 20K; 40 pF load -25 - +35 % R = 30K; 40 pF load -25 - +35 % R = 40K; 40 pF load -25 - +35 % R = 80K; 40 pF load -25 - +35 % R = 120K; 40 pF load -25 - +35 % R = 250K; 40 pF load -25 - +35 % R= 500K; 40 pF load -25 - +35 % R = 1M; 40 pF load -25 - +35 % - 1.1 2 mA Quiescent current Table 11-35. Transimpedance Amplifier (TIA) AC Specifications Parameter BW Description Input bandwidth (-3 dB) Min Typ Max Units R = 20K; -40 pF load Conditions 1500 - - kHz R = 120K; -40 pF load 240 - - kHz R = 1M; -40 pF load 25 - - kHz Note 56. Conversion resistance values are not calibrated. Calibrated values and details about calibration are provided in PSoC Creator component data sheets. External precision resistors can also be used. Document Number: 001-53304 Rev. *Z Page 102 of 137 PSoC(R) 3: CY8C34 Family Datasheet 11.5.10 Programmable Gain Amplifier The PGA is created using a SC/CT analog block; see the PGA component data sheet in PSoC Creator for full electrical specifications and APIs. Unless otherwise specified, operating conditions are: Operating temperature = 25 C for typical values Unless otherwise specified, all charts and graphs show typical values Table 11-36. PGA DC Specifications Parameter Description Conditions Min Typ Max Units Vssa - VDDA V Vin Input voltage range Power mode = minimum Vos Input offset voltage Power mode = high, gain = 1 - - 10 mV TCVos Input offset voltage drift with temperature Power mode = high, gain = 1 - - 30 V/C Ge1 Gain error, gain = 1 - - 0.15 % Ge16 Gain error, gain = 16 - - 2.5 % Ge50 Gain error, gain = 50 - - 5 % Vonl DC output nonlinearity - - 0.01 % of FSR Cin Input capacitance - - 7 pF Voh Output voltage swing Power mode = high, gain = 1, Rload = 100 k to VDDA / 2 VDDA - 0.15 - - V Vol Output voltage swing Power mode = high, gain = 1, Rload = 100 k to VDDA / 2 - - VSSA + 0.15 V Vsrc Output voltage under load Iload = 250 A, VDDA 2.7V, power mode = high - - 300 mV Idd Operating current Power mode = high - 1.5 1.65 mA PSRR Power supply rejection ratio 48 - - dB Gain = 1 Figure 11-60. PGA Voffset Histogram, 4096 samples/ 1024 parts Document Number: 001-53304 Rev. *Z Page 103 of 137 PSoC(R) 3: CY8C34 Family Datasheet Table 11-37. PGA AC Specifications Parameter BW1 Description -3 dB bandwidth SR1 Slew rate en Input noise density Conditions Power mode = high, gain = 1, input = 100 mV peak-to-peak Power mode = high, gain = 1, 20% to 80% Power mode = high, VDDA = 5 V, at 100 kHz Figure 11-61. Bandwidth vs. Temperature, at Different Gain Settings, Power Mode = High Min 6.7 Typ 8 Max - Units MHz 3 - - V/s - 43 - nV/sqrtHz Figure 11-62. Noise vs. Frequency, VDDA = 5 V, Power Mode = High BW, MHz 10 1 0.1 -40 -20 0 20 40 60 80 Temperature, C Gain = 1 Gain = 24 Gain = 48 11.5.11 Temperature Sensor Table 11-38. Temperature Sensor Specifications Parameter Description Temp sensor accuracy Conditions Range: -40 C to +85 C Min - Typ 5 Max - Units C 11.5.12 LCD Direct Drive Table 11-39. LCD Direct Drive DC Specifications Parameter Description ICC LCD system operating current ICC_SEG VBIAS IOUT Conditions Device sleep mode with wakeup at 400-Hz rate to refresh LCDs, bus clock = 3 Mhz, VDDIO = VDDA = 3 V, 4 commons, 16 segments, 1/4 duty cycle, 50 Hz frame rate, no glass connected Current per segment driver Strong drive mode LCD bias range (VBIAS refers to the main VDDA 3 V and VDDA VBIAS output voltage(V0) of LCD DAC) LCD bias step size VDDA 3 V and VDDA VBIAS LCD capacitance per Drivers may be combined segment/common driver Long term segment offset Output drive current per segment driver) VDDIO = 5.5 V, strong drive mode Min - Typ 38 Max - Units A - 2 260 - - 5 A V - - 9.1 x VDDA 500 - 5000 mV pF - 355 - - 20 710 mV A Min Typ Max Units 10 50 150 Hz Table 11-40. LCD Direct Drive AC Specifications Parameter fLCD Description LCD frame rate Document Number: 001-53304 Rev. *Z Conditions Page 104 of 137 PSoC(R) 3: CY8C34 Family Datasheet 11.6 Digital Peripherals Specifications are valid for -40 C TA 85 C and TJ 100 C, except where noted. Specifications are valid for 1.71 V to 5.5 V, except where noted. 11.6.1 Timer The following specifications apply to the Timer/Counter/PWM peripheral in timer mode. Timers can also be implemented in UDBs; for more information, see the Timer component data sheet in PSoC Creator. Table 11-41. Timer DC Specifications Parameter Description Block current consumption Conditions 16-bit timer, at listed input clock frequency 3 MHz 12 MHz 50 MHz Min - Typ - Max - Units A - - - 15 60 260 - - - A A A Min DC 21 42 21 21 42 21 42 Typ - - - - - - - - Max 50.01 - - - - - - - Units MHz ns ns ns ns ns ns ns Table 11-42. Timer AC Specifications Parameter Description Operating frequency Capture pulse width (Internal) Capture pulse width (external) Timer resolution Enable pulse width Enable pulse width (external) Reset pulse width Reset pulse width (external) Conditions 11.6.2 Counter The following specifications apply to the Timer/Counter/PWM peripheral, in counter mode. Counters can also be implemented in UDBs; for more information, see the Counter component data sheet in PSoC Creator. Table 11-43. Counter DC Specifications Parameter Description Block current consumption Conditions 16-bit counter, at listed input clock frequency 3 MHz 12 MHz 50 MHz Min - Typ - Max - Units A - - - 15 60 260 - - - A A A Min DC 21 21 21 42 21 42 21 42 Typ - - - - Max 50.01 - - - - - - - - - - - Units MHz ns ns ns ns ns ns ns ns Table 11-44. Counter AC Specifications Parameter Description Operating frequency Capture pulse Resolution Pulse width Pulse width (external) Enable pulse width Enable pulse width (external) Reset pulse width Reset pulse width (external) Document Number: 001-53304 Rev. *Z Conditions Page 105 of 137 PSoC(R) 3: CY8C34 Family Datasheet 11.6.3 Pulse Width Modulation The following specifications apply to the Timer/Counter/PWM peripheral, in PWM mode. PWM components can also be implemented in UDBs; for more information, see the PWM component data sheet in PSoC Creator. Table 11-45. PWM DC Specifications Parameter Description Min Typ Max Units - - - A 3 MHz - 15 - A 12 MHz - 60 - A 50 MHz - 260 - A Block current consumption Conditions 16-bit PWM, at listed input clock frequency Table 11-46. Pulse Width Modulation (PWM) AC Specifications Parameter Min Typ Max Units Operating frequency Description Conditions DC - 50.01 MHz Pulse width 21 - - ns Pulse width (external) 42 - - ns Kill pulse width 21 - - ns Kill pulse width (external) 42 Enable pulse width 21 - - ns Enable pulse width (external) 42 - - ns Reset pulse width 21 - - ns Reset pulse width (external) 42 - - ns Min Typ Max Units ns 11.6.4 I2C Table 11-47. Fixed I2C DC Specifications Parameter Description Block current consumption Conditions Enabled, configured for 100 kbps - - 250 A Enabled, configured for 400 kbps - - 260 A Wake from sleep mode - - 30 A Min Typ Max Units - - 1 Mbps Typ - Max 200 Units A Table 11-48. Fixed I2C AC Specifications Parameter Description Conditions Bit rate 11.6.5 Controller Area Network Table 11-49. CAN DC Specifications[57 Parameter IDD Description Block current consumption Conditions Min - Conditions Min Typ Max Units - - 1 Mbit Table 11-50. CAN AC Specifications[57] Parameter Description Bit rate Minimum 8 MHz clock Note 57. Refer to ISO 11898 specification for details. Document Number: 001-53304 Rev. *Z Page 106 of 137 PSoC(R) 3: CY8C34 Family Datasheet 11.6.6 USB Table 11-51. USB DC Specifications Parameter Description Min Typ Max Units USB configured, USB regulator enabled 4.35 - 5.25 V VUSB_3.3 USB configured, USB regulator bypassed 3.15 - 3.6 V VUSB_3 USB configured, USB regulator bypassed[58] 2.85 - 3.6 V VUSB_5 Device supply (VDDD) for USB operation IUSB_Configured Conditions Device supply current in device active VDDD = 5 V, FCPU = 1.5 MHz mode, bus clock and IMO = 24 MHz V DDD = 3.3 V, FCPU = 1.5 MHz - 10 - mA - 8 - mA - 0.5 - mA VDDD = 5 V, disconnected from USB host - 0.3 - mA VDDD = 3.3 V, connected to USB host, PICU configured to wake on USB resume signal - 0.5 - mA VDDD = 3.3 V, disconnected from USB host - 0.3 - mA IUSB_Suspended Device supply current in device sleep VDDD = 5 V, connected to USB mode host, PICU configured to wake on USB resume signal 11.6.7 Universal Digital Blocks (UDBs) PSoC Creator provides a library of pre-built and tested standard digital peripherals (UART, SPI, LIN, PRS, CRC, timer, counter, PWM, AND, OR, and so on) that are mapped to the UDB array. See the component data sheets in PSoC Creator for full AC/DC specifications, APIs, and example code. Table 11-52. UDB AC Specifications Parameter Description Conditions Min Typ Max Units FMAX_TIMER Maximum frequency of 16-bit timer in a UDB pair - - 50.01 MHz FMAX_ADDER Maximum frequency of 16-bit adder in a UDB pair - - 50.01 MHz FMAX_CRC - - 50.01 MHz - - 50.01 MHz Datapath Performance Maximum frequency of 16-bit CRC/PRS in a UDB pair PLD Performance FMAX_PLD Maximum frequency of a two-pass PLD function in a UDB pair Clock to Output Performance tCLK_OUT Propagation delay for clock in to data out, see Figure 11-63. 25 C, VDDD 2.7 V - 20 25 ns tCLK_OUT Propagation delay for clock in to data out, see Figure 11-63. Worst-case placement, routing, and pin selection - - 55 ns Note 58. Rise/fall time matching (TR) not guaranteed, see USB Driver AC Specifications on page 86. Document Number: 001-53304 Rev. *Z Page 107 of 137 PSoC(R) 3: CY8C34 Family Datasheet Figure 11-63. Clock to Output Performance 11.7 Memory Specifications are valid for -40 C TA 85 C and TJ 100 C, except where noted. Specifications are valid for 1.71 V to 5.5 V, except where noted. 11.7.1 Flash Table 11-53. Flash DC Specifications Parameter Description Erase and program voltage Conditions VDDD pin Min Typ Max Units 1.71 - 5.5 V Min Typ Max Units Table 11-54. Flash AC Specifications Parameter Description Conditions TWRITE Row write time (erase + program) - 15 20 ms TERASE Row erase time - 10 13 ms Row program time - 5 7 ms Bulk erase time (16 KB to 64 KB) - - 35 ms TBULK Sector erase time (8 KB to 16 KB) TPROG - - 15 ms Total device programming time No overhead[59] - 1.5 2 seconds Flash data retention time, retention period measured from last erase cycle Average ambient temp. TA 55 C, 100 K erase/program cycles 20 - - years Average ambient temp. TA 85 C, 10 K erase/program cycles 10 - - years Note 59. See PSoC(R) 3 Device Programming Specifications for a description of a low-overhead method of programming PSoC 3 flash. Document Number: 001-53304 Rev. *Z Page 108 of 137 PSoC(R) 3: CY8C34 Family Datasheet 11.7.2 EEPROM Table 11-55. EEPROM DC Specifications Parameter Description Conditions Erase and program voltage Min Typ Max Units 1.71 - 5.5 V Table 11-56. EEPROM AC Specifications Parameter TWRITE Min Typ Max Units Single row erase/write cycle time Description Conditions - 10 20 ms EEPROM data retention time, retention Average ambient temp, TA 25 C, period measured from last erase cycle 1M erase/program cycles 20 - - years Average ambient temp, TA 55 C, 100 K erase/program cycles 20 - - Average ambient temp. TA 85 C, 10 K erase/program cycles 10 - - 11.7.3 Nonvolatile Latches (NVL)) Table 11-57. NVL DC Specifications Parameter Description Erase and program voltage Conditions VDDD pin Min Typ Max Units 1.71 - 5.5 V Table 11-58. NVL AC Specifications Parameter Description NVL endurance NVL data retention time Min Typ Max Units Programmed at 25 C Conditions 1K - - program/ erase cycles Programmed at 0 C to 70 C 100 - - program/ erase cycles Average ambient temp. TA 55 C 20 - - years Average ambient temp. TA 85 C 10 - - years Conditions Min Typ Max Units 1.2 - - V Min Typ Max Units DC - 50.01 MHz 11.7.4 SRAM Table 11-59. SRAM DC Specifications Parameter VSRAM Description SRAM retention voltage Table 11-60. SRAM AC Specifications Parameter FSRAM Description SRAM operating frequency Document Number: 001-53304 Rev. *Z Conditions Page 109 of 137 PSoC(R) 3: CY8C34 Family Datasheet 11.7.5 External Memory Interface Figure 11-64. Asynchronous Write and Read Cycle Timing, No Wait States Tbus_clock Bus Clock EM_Addr EM_CE EM_WE EM_OE Twr_setup Trd_hold Trd_setup EM_Data Write Cycle Read Cycle Minimum of 4 bus clock cycles between successive EMIF accesses Table 11-61. Asynchronous Write and Read Timing Specifications[60] Parameter Description Bus clock frequency[61] Tbus_clock Bus clock period[62] Twr_Setup Time from EM_data valid to rising edge of EM_WE and EM_CE Trd_setup Trd_hold Fbus_clock Conditions Min Typ Max Units - - 33 MHz 30.3 - - ns Tbus_clock - 10 - - ns Time that EM_data must be valid before rising edge of EM_OE 5 - - ns Time that EM_data must be valid after rising edge of EM_OE 5 - - ns Notes 60. Based on device characterization (Not production tested). 61. EMIF signal timings are limited by GPIO frequency limitations. See "GPIO" section on page 79. 62. EMIF output signals are generally synchronized to bus clock, so EMIF signal timings are dependent on bus clock frequency. Document Number: 001-53304 Rev. *Z Page 110 of 137 PSoC(R) 3: CY8C34 Family Datasheet Figure 11-65. Synchronous Write and Read Cycle Timing, No Wait States Tbus_clock Bus Clock EM_Clock EM_Addr EM_CE EM_ADSC EM_WE EM_OE Twr_setup Trd_hold Trd_setup EM_Data Write Cycle Read Cycle Minimum of 4 bus clock cycles between successive EMIF accesses Table 11-62. Synchronous Write and Read Timing Specifications[63] Parameter Description frequency[64] Fbus_clock Bus clock Tbus_clock Bus clock period[65] Twr_Setup Time from EM_data valid to rising edge of EM_Clock Trd_setup Trd_hold Conditions Min Typ Max Units - - 33 MHz 30.3 - - ns Tbus_clock - 10 - - ns Time that EM_data must be valid before rising edge of EM_OE 5 - - ns Time that EM_data must be valid after rising edge of EM_OE 5 - - ns Notes 63. Based on device characterization (Not production tested). 64. EMIF signal timings are limited by GPIO frequency limitations. See "GPIO" section on page 79. 65. EMIF output signals are generally synchronized to bus clock, so EMIF signal timings are dependent on bus clock frequency. Document Number: 001-53304 Rev. *Z Page 111 of 137 PSoC(R) 3: CY8C34 Family Datasheet Figure 11-66. Synchronous Read Cycle Timing Tcp/2 EM_ Clock Tceld Tcehd EM_ CEn Taddriv Taddrv EM_ Addr Address Toeld Toehd EM_ OEn Tds Data EM_ Data Tadscld Tadschd EM_ ADSCn Table 11-63. Synchronous Read Cycle Specifications Parameter Description Min Typ Max Units 30.3 - - ns T/2 - - ns 5 - - ns EM_Clock high to EM_CEn high T/2 - 5 - - ns EM_Addr valid to EM_Clock high 5 - - ns T/2 - 5 - - ns 5 - - ns EM_Clock high to EM_OEn high T - - ns Data valid before EM_OEn high T + 15 - - ns EM_ADSCn low to EM_Clock high 5 - - ns EM_Clock high to EM_ADSCn high T/2 - 5 - - ns T EMIF clock period[66] Tcp/2 EM_Clock pulse high Tceld EM_CEn low to EM_Clock high Tcehd Taddrv Taddriv EM_Clock high to EM_Addr invalid Toeld EM_OEn low to EM_Clock high Toehd Tds Tadscld Tadschd Conditions VDDA 3.3 V Note 66. Limited by GPIO output frequency, see Table 11-10 on page 80. Document Number: 001-53304 Rev. *Z Page 112 of 137 PSoC(R) 3: CY8C34 Family Datasheet Figure 11-67. Synchronous Write Cycle Timing Tcp/2 EM_ Clock Tceld Tcehd EM_ CEn Taddriv Taddrv EM_ Addr Address Tweld Twehd EM_ WEn Tdh Tds Data EM_ Data Tadschd Tadscld EM_ ADSCn Table 11-64. Synchronous Write Cycle Specifications Parameter Description Period[67] Conditions VDDA 3.3 V Min Typ Max Units 30.3 - - ns T/2 - - ns T EMIF clock Tcp/2 EM_Clock pulse high Tceld EM_CEn low to EM_Clock high 5 - - ns Tcehd EM_Clock high to EM_CEn high T/2 - 5 - - ns Taddrv EM_Addr valid to EM_Clock high Taddriv EM_Clock high to EM_Addr invalid Tweld Twehd Tds Tdh Tadscld Tadschd 5 - - ns T/2 - 5 - - ns EM_WEn low to EM_Clock high 5 - - ns EM_Clock high to EM_WEn high T/2 - 5 - - ns Data valid before EM_Clock high 5 - - ns Data invalid after EM_Clock high T - - ns EM_ADSCn low to EM_Clock high 5 - - ns EM_Clock high to EM_ADSCn high T/2 - 5 - - ns Note 67. Limited by GPIO output frequency, see Table 11-10 on page 80. Document Number: 001-53304 Rev. *Z Page 113 of 137 PSoC(R) 3: CY8C34 Family Datasheet 11.8 PSoC System Resources Specifications are valid for -40 C TA 85 C and TJ 100 C, except where noted. Specifications are valid for 1.71 V to 5.5 V, except where noted. 11.8.1 POR with Brown Out For brown out detect in regulated mode, VDDD and VDDA must be 2.0 V. Brown out detect is not available in externally regulated mode. Table 11-65. Precise Low-Voltage Reset (PRES) with Brown Out DC Specifications Parameter Description PRESR Rising trip voltage PRESF Falling trip voltage Conditions Factory trim Min Typ Max Units 1.64 - 1.68 V 1.62 - 1.66 V Min Typ Max Units Table 11-66. Power-on Reset (POR) with Brown Out AC Specifications Parameter Description Conditions PRES_TR Response time VDDD/VDDA droop rate Sleep mode - - 0.5 s - 5 - V/sec Min Typ Max Units 1.68 1.89 2.14 2.38 2.62 2.87 3.11 3.35 3.59 3.84 4.08 4.32 4.56 4.83 5.05 5.30 5.57 1.73 1.95 2.20 2.45 2.71 2.95 3.21 3.46 3.70 3.95 4.20 4.45 4.70 4.98 5.21 5.47 5.75 1.77 2.01 2.27 2.53 2.79 3.04 3.31 3.56 3.81 4.07 4.33 4.59 4.84 5.13 5.37 5.63 5.92 V V V V V V V V V V V V V V V V V Min Typ Max Units - - 1 s 11.8.2 Voltage Monitors Table 11-67. Voltage Monitors DC Specifications Parameter Description LVI Trip voltage LVI_A/D_SEL[3:0] = 0000b LVI_A/D_SEL[3:0] = 0001b LVI_A/D_SEL[3:0] = 0010b LVI_A/D_SEL[3:0] = 0011b LVI_A/D_SEL[3:0] = 0100b LVI_A/D_SEL[3:0] = 0101b LVI_A/D_SEL[3:0] = 0110b LVI_A/D_SEL[3:0] = 0111b LVI_A/D_SEL[3:0] = 1000b LVI_A/D_SEL[3:0] = 1001b LVI_A/D_SEL[3:0] = 1010b LVI_A/D_SEL[3:0] = 1011b LVI_A/D_SEL[3:0] = 1100b LVI_A/D_SEL[3:0] = 1101b LVI_A/D_SEL[3:0] = 1110b LVI_A/D_SEL[3:0] = 1111b HVI Trip voltage Conditions Table 11-68. Voltage Monitors AC Specifications Parameter Description Response time [68] Conditions Note 68. Based on device characterization (Not production tested). Document Number: 001-53304 Rev. *Z Page 114 of 137 PSoC(R) 3: CY8C34 Family Datasheet 11.8.3 Interrupt Controller Table 11-69. Interrupt Controller AC Specifications Parameter Description Delay from interrupt signal input to ISR code execution from ISR code Conditions Min Typ Max Units Includes worse case completion of longest instruction DIV with 6 cycles - - 25 Tcy CPU Typ Max Units MHz 11.8.4 JTAG Interface Figure 11-68. JTAG Interface Timing (1/f_TCK) TCK T_TDI_setup T_TDI_hold TDI T_TDO_valid T_TDO_hold TDO T_TMS_setup T_TMS_hold TMS Table 11-70. JTAG Interface AC Specifications[69] Parameter f_TCK Description TCK frequency Conditions Min 3.3 V VDDD 5 V - - 14[70] 1.71 V VDDD < 3.3 V - - 7[70] MHz ns T_TDI_setup TDI setup before TCK high (T/10) - 5 - - T_TMS_setup TMS setup before TCK high T/4 - - T_TDI_hold TDI, TMS hold after TCK high T = 1/f_TCK max T/4 - - T_TDO_valid TCK low to TDO valid T = 1/f_TCK max - - 2T/5 T_TDO_hold TDO hold after TCK high T = 1/f_TCK max T/4 - - Notes 69. Based on device characterization (Not production tested). 70. f_TCK must also be no more than 1/3 CPU clock frequency. Document Number: 001-53304 Rev. *Z Page 115 of 137 PSoC(R) 3: CY8C34 Family Datasheet 11.8.5 SWD Interface Figure 11-69. SWD Interface Timing (1/f_S W D C K ) SW DCK T _S W D I_setup T_ S W D I_ hold S W D IO (P S oC inp ut) T _S W D O _hold T _S W D O _ valid S W D IO (P S oC outp ut) Table 11-71. SWD Interface AC Specifications[71] Parameter Description Conditions Min Typ Max [72] Units 3.3 V VDDD 5 V - - 14 MHz 1.71 V VDDD < 3.3 V - - 7[72] MHz - - 5.5[72] MHz T_SWDI_setup SWDIO input setup before SWDCK high T = 1/f_SWDCK max T/4 - - - T_SWDI_hold T = 1/f_SWDCK max T/4 - - - T = 1/f_SWDCK max - - 2T/5 - Min Typ Max Units - - 33 Mbit f_SWDCK SWDCLK frequency 1.71 V VDDD < 3.3 V, SWD over USBIO pins SWDIO input hold after SWDCK high T_SWDO_valid SWDCK high to SWDIO output 11.8.6 SWV Interface Table 11-72. SWV Interface AC Specifications[71] Parameter Description SWV mode SWV bit rate Conditions Notes 71. Based on device characterization (Not production tested). 72. ff_SWDCK must also be no more than 1/3 CPU clock frequency. Document Number: 001-53304 Rev. *Z Page 116 of 137 PSoC(R) 3: CY8C34 Family Datasheet 11.9 Clocking Specifications are valid for -40 C TA 85 C and TJ 100 C, except where noted. Specifications are valid for 1.71 V to 5.5 V, except where noted. 11.9.1 Internal Main Oscillator Table 11-73. IMO DC Specifications Parameter Description Conditions Min Typ Max Units Supply current 24 MHz - USB mode With oscillator locking to USB bus - - 500 A 24 MHz - non USB mode - - 300 A 12 MHz - - 200 A 6 MHz - - 180 A 3 MHz - - 150 A Min Typ Max Units -4 - 4 % Figure 11-70. IMO Current vs. Frequency Table 11-74. IMO AC Specifications Parameter Description Conditions IMO frequency stability (with factory trim) 24 MHz - Non USB mode FIMO 24 MHz - USB mode -0.25 - 0.25 % 12 MHz -3 - 3 % 6 MHz -2 - 2 % 3 MHz -2 - 2 % - - 13 s F = 24 MHz - 0.9 - ns F = 3 MHz - 1.6 - ns F = 24 MHz - 0.9 - ns F = 3 MHz - 12 - ns [73] Startup time With oscillator locking to USB bus From enable (during normal system operation) Jitter (peak to peak)[73] Jp-p Jitter (long term)[73] Jperiod Note 73. Based on device characterization (Not production tested). Document Number: 001-53304 Rev. *Z Page 117 of 137 PSoC(R) 3: CY8C34 Family Datasheet Figure 11-71. IMO Frequency Variation vs. Temperature Figure 11-72. IMO Frequency Variation vs. VCC 11.9.2 Internal Low-Speed Oscillator Table 11-75. ILO DC Specifications Parameter Description Min Typ Max Units FOUT = 1 kHz - - 1.7 A FOUT = 33 kHz - - 2.6 A FOUT = 100 kHz - - 2.6 A Power down mode - - 15 nA Min Typ Max Units - - 2 ms 100 kHz 45 100 200 kHz 1 kHz 0.5 1 2 kHz Operating current[74] ICC Leakage current[74] Conditions Table 11-76. ILO AC Specifications Parameter Description Startup time, all frequencies FILO Conditions Turbo mode ILO frequencies Note 74. This value is calculated, not measured. Document Number: 001-53304 Rev. *Z Page 118 of 137 PSoC(R) 3: CY8C34 Family Datasheet Figure 11-73. ILO Frequency Variation vs. Temperature Figure 11-74. ILO Frequency Variation vs. VDD 11.9.3 MHz External Crystal Oscillator For more information on crystal or ceramic resonator selection for the MHzECO, refer to application note AN54439: PSoC 3 and PSoC 5 External Oscillators.. Table 11-77. MHzECO DC Specifications Parameter ICC Description Operating current[75] Conditions 13.56 MHz crystal Min Typ Max Units - 3.8 - mA Min Typ Max Units 4 - 25 MHz Min Typ Max Units - 0.25 1.0 A - - 1 W Min Typ Max Units - 32.768 - kHz - 1 - s Table 11-78. MHzECO AC Specifications Parameter F Description Conditions Crystal frequency range 11.9.4 kHz External Crystal Oscillator Table 11-79. kHzECO DC Specifications[75] Parameter Description ICC Operating current DL Drive level Conditions Low-power mode; CL = 6 pF Table 11-80. kHzECO AC Specifications Parameter Description F Frequency TON Startup time Conditions High-power mode Note 75. Based on device characterization (Not production tested). Document Number: 001-53304 Rev. *Z Page 119 of 137 PSoC(R) 3: CY8C34 Family Datasheet 11.9.5 External Clock Reference Table 11-81. External Clock Reference AC Specifications[76] Parameter Description Conditions External frequency range Min Typ Max Units 0 - 33 MHz Input duty cycle range Measured at VDDIO/2 30 50 70 % Input edge rate VIL to VIH 0.5 - - V/ns Min Typ Max Units - 200 - A Min Typ Max Units 1 - 48 MHz 1 - 3 MHz 11.9.6 Phase-Locked Loop Table 11-82. PLL DC Specifications Parameter IDD Description PLL operating current Conditions In = 3 MHz, Out = 24 MHz Table 11-83. PLL AC Specifications Parameter Fpllin Description PLL input PLL intermediate frequency[78] Fpllout Conditions frequency[77] PLL output frequency[77] Output of prescaler 24 - 50 MHz Lock time at startup - - 250 s (rms)[76] - - 250 ps Jperiod-rms Jitter Notes 76. Based on device characterization (Not production tested). 77. This specification is guaranteed by testing the PLL across the specified range using the IMO as the source for the PLL. 78. PLL input divider, Q, must be set so that the input frequency is divided down to the intermediate frequency range. Value for Q ranges from 1 to 16. Document Number: 001-53304 Rev. *Z Page 120 of 137 PSoC(R) 3: CY8C34 Family Datasheet 12. Ordering Information In addition to the features listed in Table 12-1, every CY8C34 device includes: a precision on-chip voltage reference, precision oscillators, flash, ECC, DMA, a fixed function I2C, 4 KB trace RAM, JTAG/SWD programming and debug, external memory interface, and more. In addition to these features, the flexible UDBs and analog subsection support a wide range of peripherals. To assist you in selecting the ideal part, PSoC Creator makes a part recommendation after you choose the components required by your application. All CY8C34 derivatives incorporate device and flash security in user-selectable security levels; see the TRM for details. Table 12-1. CY8C34 Family with Single Cycle 8051 I/O[81] JTAG ID[82] USBIO SIO GPIO Total I/O CAN 2.0b Package FS USB 16-bit Timer/PWM UDBs[80] CapSense DFB Opamps Digital SC/CT Analog Blocks[79] Comparator DAC ADC LCD Segment Drive Analog EEPROM (KB) SRAM (KB) Flash (KB) Part Number CPU Speed (MHz) MCU Core 16 KB Flash CY8C3444LTI-110 50 16 2 0.5 12-bit Del-Sig 2 4 2 2 - 16 4 - - 46 38 8 0 68-pin QFN 0x1E06E069 CY8C3444LTI-119 50 16 2 0.5 12-bit Del-Sig 2 4 2 2 - 16 4 - - 29 25 4 0 48-pin QFN 0x1E077069 CY8C3444PVI-100 50 16 2 0.5 12-bit Del-Sig 2 4 2 2 - 16 4 - - 29 25 4 0 48-pin SSOP 0x1E064069 32 KB Flash CY8C3445AXI-104 50 32 4 1 12-bit Del-Sig 2 4 2 2 - 20 4 - - 70 62 8 0 100-pin TQFP 0x1E068069 CY8C3445LTI-079 50 32 4 1 12-bit Del-Sig 2 4 2 2 - 20 4 - - 46 38 8 0 68-pin QFN 0x1E04F069 CY8C3445LTI-078 50 32 4 1 12-bit Del-Sig 2 4 2 2 - 20 4 - - 29 25 4 0 48-pin QFN 0x1E04E069 48-pin SSOP 0x1E05E069 CY8C3445PVI-094 50 32 4 1 12-bit Del-Sig 2 4 2 2 - 20 4 - - 29 25 4 0 CY8C3445AXI-108 50 32 4 1 12-bit Del-Sig 2 4 2 2 - 20 4 - 72 62 8 2 100-pin TQFP 0x1E06C069 CY8C3445LTI-081 50 32 4 1 12-bit Del-Sig 2 4 2 2 - 20 4 - 48 38 8 2 68-pin QFN CY8C3445PVI-090 50 32 4 1 12-bit Del-Sig 2 4 2 2 - 20 4 - 31 25 4 2 48-pin SSOP 0x1E05A069 0x1E051069 64 KB Flash CY8C3446LTI-073 50 64 8 2 12-bit Del-Sig 2 4 2 2 - 24 4 - 31 25 4 2 48-pin QFN 0x1E049069 CY8C3446LTI-074 50 64 8 2 12-bit Del-Sig 2 4 2 2 - 24 4 - - 46 38 8 0 68-pin QFN 0x1E04A069 CY8C3446LTI-083 50 64 8 2 12-bit Del-Sig 2 4 2 2 - 24 4 - - 29 25 4 0 48-pin QFN 0x1E053069 CY8C3446AXI-099 50 64 8 2 12-bit Del-Sig 2 4 2 2 - 24 4 - 72 62 8 2 100-pin TQFP 0x1E063069 100-pin TQFP 0x1E069069 CY8C3446AXI-105 50 64 8 2 12-bit Del-Sig 2 4 2 2 - 24 4 - - 70 62 8 0 CY8C3446LTI-085 50 64 8 2 12-bit Del-Sig 2 4 2 2 - 24 4 - 48 38 8 2 68-pin QFN CY8C3446PVI-076 50 64 8 2 12-bit Del-Sig 2 4 2 2 - 24 4 - 31 25 4 2 48-pin SSOP 0x1E04C069 CY8C3446PVI-102 50 64 8 2 12-bit Del-Sig 2 4 2 2 - 24 4 - 29 25 4 0 48-pin SSOP 0x1E066069 0x1E055069 Notes 79. Analog blocks support a wide variety of functionality including TIA, PGA, and mixers. See the Example Peripherals on page 43 for more information on how analog blocks can be used. 80. UDBs support a wide variety of functionality including SPI, LIN, UART, timer, counter, PWM, PRS, and others. Individual functions may use a fraction of a UDB or multiple UDBs. Multiple functions can share a single UDB. See the Example Peripherals on page 43 for more information on how UDBs can be used. 81. The I/O Count includes all types of digital I/O: GPIO, SIO, and the two USB I/O. See the I/O System and Routing on page 36 for details on the functionality of each of these types of I/O. 82. The JTAG ID has three major fields. The most significant nibble (left digit) is the version, followed by a 2 byte part number and a 3 nibble manufacturer ID. Document Number: 001-53304 Rev. *Z Page 121 of 137 PSoC(R) 3: CY8C34 Family Datasheet 12.1 Part Numbering Conventions PSoC 3 devices follow the part numbering convention described here. All fields are single character alphanumeric (0, 1, 2, ..., 9, A, B, ..., Z) unless stated otherwise. CY8Cabcdefg-xxx a: Architecture ef: Package code 3: PSoC 3 5: PSoC 5 Two character alphanumeric AX: TQFP LT: QFN PV: SSOP b: Family group within architecture 4: CY8C34 family 6: CY8C36 family 8: CY8C38 family g: Temperature range C: commercial I: industrial A: automotive c: Speed grade 4: 50 MHz 6: 67 MHz xxx: Peripheral set d: Flash capacity 4: 16 KB 5: 32 KB 6: 64 KB Three character numeric No meaning is associated with these three characters. Example CY8C 3 4 4 6 P V I - x x x Cypress Prefix 3: PSoC 3 4: CY8C34 Family Architecture Family Group within Architecture 4: 50 MHz Speed Grade 6: 64 KB Flash Capacity PV: SSOP Package Code I: Industrial Temperature Range Peripheral Set Tape and reel versions of these devices are available and are marked with a "T" at the end of the part number. All devices in the PSoC 3 CY8C34 family comply to RoHS-6 specifications, demonstrating the commitment by Cypress to lead-free products. Lead (Pb) is an alloying element in solders that has resulted in environmental concerns due to potential toxicity. Cypress uses nickel-palladium-gold (NiPdAu) technology for the majority of leadframe-based packages. A high level review of the Cypress Pb-free position is available on our website. Specific package information is also available. Package Material Declaration data sheets (PMDDs) identify all substances contained within Cypress packages. PMDDs also confirm the absence of many banned substances. The information in the PMDDs will help Cypress customers plan for recycling or other "end of life" requirements. Document Number: 001-53304 Rev. *Z Page 122 of 137 PSoC(R) 3: CY8C34 Family Datasheet 13. Packaging Table 13-1. Package Characteristics Min Typ Max Units TA Parameter Operating ambient temperature Description Conditions -40 25.00 85 C TJ Operating junction temperature -40 - 100 C TJA Package JA (48-pin SSOP) - 49 - C/Watt TJA Package JA (48-pin QFN) - 14 - C/Watt TJA Package JA (68-pin QFN) - 15 - C/Watt TJA Package JA (100-pin TQFP) - 34 - C/Watt TJC Package JC (48-pin SSOP) - 24 - C/Watt TJC Package JC (48-pin QFN) - 15 - C/Watt TJC Package JC (68-pin QFN) - 13 - C/Watt TJC Package JC (100-pin TQFP) - 10 - C/Watt Table 13-2. Solder Reflow Peak Temperature Package Maximum Peak Temperature Maximum Time at Peak Temperature 48-pin SSOP 260 C 30 seconds 48-pin QFN 260 C 30 seconds 68-pin QFN 260 C 30 seconds 100-pin TQFP 260 C 30 seconds Table 13-3. Package Moisture Sensitivity Level (MSL), IPC/JEDEC J-STD-2 Package MSL 48-pin SSOP MSL 3 48-pin QFN MSL 3 68-pin QFN MSL 3 100-pin TQFP MSL 3 Document Number: 001-53304 Rev. *Z Page 123 of 137 PSoC(R) 3: CY8C34 Family Datasheet Figure 13-1. 48-pin (300 mil) SSOP Package Outline 51-85061 *F Figure 13-2. 48-pin QFN Package Outline 001-45616 *F Document Number: 001-53304 Rev. *Z Page 124 of 137 PSoC(R) 3: CY8C34 Family Datasheet Figure 13-3. 68-pin QFN 8 x 8 with 0.4 mm Pitch Package Outline (Sawn Version) 001-09618 *E Figure 13-4. 100-pin TQFP (14 x 14 x 1.4 mm) Package Outline 51-85048 *J Document Number: 001-53304 Rev. *Z Page 125 of 137 PSoC(R) 3: CY8C34 Family Datasheet 14. Acronyms Table 14-1. Acronyms Used in this Document (continued) Acronym Table 14-1. Acronyms Used in this Document Acronym Description Description FIR finite impulse response, see also IIR FPB flash patch and breakpoint FS full-speed GPIO general-purpose input/output, applies to a PSoC pin HVI high-voltage interrupt, see also LVI, LVD abus analog local bus ADC analog-to-digital converter AG analog global AHB AMBA (advanced microcontroller bus architecture) high-performance bus, an ARM data transfer bus IC integrated circuit ALU arithmetic logic unit IDAC current DAC, see also DAC, VDAC AMUXBUS analog multiplexer bus IDE integrated development environment API application programming interface APSR application program status register ARM(R) advanced RISC machine, a CPU architecture ATM automatic thump mode BW bandwidth CAN Controller Area Network, a communications protocol CMRR I 2C, or IIC Inter-Integrated Circuit, a communications protocol IIR infinite impulse response, see also FIR ILO internal low-speed oscillator, see also IMO IMO internal main oscillator, see also ILO INL integral nonlinearity, see also DNL I/O input/output, see also GPIO, DIO, SIO, USBIO common-mode rejection ratio IPOR initial power-on reset CPU central processing unit IPSR interrupt program status register CRC cyclic redundancy check, an error-checking protocol IRQ interrupt request DAC digital-to-analog converter, see also IDAC, VDAC ITM instrumentation trace macrocell DFB digital filter block LCD liquid crystal display DIO digital input/output, GPIO with only digital capabilities, no analog. See GPIO. LIN Local Interconnect Network, a communications protocol. DMA direct memory access, see also TD LR link register DNL differential nonlinearity, see also INL LUT lookup table DNU do not use LVD low-voltage detect, see also LVI DR port write data registers LVI low-voltage interrupt, see also HVI DSI digital system interconnect LVTTL low-voltage transistor-transistor logic DWT data watchpoint and trace ECC error correcting code ECO external crystal oscillator EEPROM electrically erasable programmable read-only memory EMI electromagnetic interference EMIF external memory interface EOC end of conversion EOF end of frame EPSR execution program status register ESD electrostatic discharge ETM embedded trace macrocell Document Number: 001-53304 Rev. *Z MAC multiply-accumulate MCU microcontroller unit MISO master-in slave-out NC no connect NMI nonmaskable interrupt NRZ non-return-to-zero NVIC nested vectored interrupt controller NVL nonvolatile latch, see also WOL opamp operational amplifier PAL programmable array logic, see also PLD PC program counter PCB printed circuit board PGA programmable gain amplifier Page 126 of 137 PSoC(R) 3: CY8C34 Family Datasheet Table 14-1. Acronyms Used in this Document (continued) Acronym Description Table 14-1. Acronyms Used in this Document (continued) Acronym Description PHUB peripheral hub SOF start of frame PHY physical layer SPI PICU port interrupt control unit Serial Peripheral Interface, a communications protocol PLA programmable logic array SR slew rate PLD programmable logic device, see also PAL SRAM static random access memory PLL phase-locked loop SRES software reset PMDD package material declaration data sheet POR power-on reset PRES precise low-voltage reset PRS pseudo random sequence PS port read data register PSoC(R) Programmable System-on-ChipTM PSRR power supply rejection ratio PWM pulse-width modulator RAM random-access memory RISC reduced-instruction-set computing RMS root-mean-square RTC real-time clock RTL register transfer language RTR remote transmission request VDAC voltage DAC, see also DAC, IDAC RX receive WDT watchdog timer SAR successive approximation register WOL write once latch, see also NVL SC/CT switched capacitor/continuous time WRES watchdog timer reset 2C serial clock SCL I SDA I2C serial data S/H sample and hold SINAD signal to noise and distortion ratio SIO special input/output, GPIO with advanced features. See GPIO. SOC start of conversion Document Number: 001-53304 Rev. *Z SWD serial wire debug, a test protocol SWV single-wire viewer TD transaction descriptor, see also DMA THD total harmonic distortion TIA transimpedance amplifier TRM technical reference manual TTL transistor-transistor logic TX transmit UART Universal Asynchronous Transmitter Receiver, a communications protocol UDB universal digital block USB Universal Serial Bus USBIO USB input/output, PSoC pins used to connect to a USB port XRES external reset I/O pin XTAL crystal 15. Reference Documents PSoC(R) 3, PSoC(R) 5 Architecture TRM PSoC(R) 3 Registers TRM Page 127 of 137 PSoC(R) 3: CY8C34 Family Datasheet 16. Document Conventions 16.1 Units of Measure Table 16-1. Units of Measure Symbol Unit of Measure C degrees Celsius dB decibels fF femtofarads Hz hertz KB 1024 bytes kbps kilobits per second Khr kilohours kHz kilohertz k kilohms ksps kilosamples per second LSB least significant bit Mbps megabits per second MHz megahertz M megaohms Msps megasamples per second A microamperes F microfarads H microhenrys s microseconds V microvolts W microwatts mA milliamperes ms milliseconds mV millivolts nA nanoamperes ns nanoseconds nV nanovolts ohms pF picofarads ppm parts per million ps picoseconds s seconds sps samples per second sqrtHz square root of hertz V volts Document Number: 001-53304 Rev. *Z Page 128 of 137 PSoC(R) 3: CY8C34 Family Datasheet 17. Revision History Description Title: PSoC(R) 3: CY8C34 Family Datasheet Programmable System-on-Chip (PSoC(R)) Document Number: 001-53304 Submission Orig. of Revision ECN Description of Change Date Change New data sheet ** 2714270 06/03/09 VVSK *A 2758970 09/02/09 MKEA Updated Part Numbering Conventions Added Section 11.7.5 (EMIF Figures and Tables) Updated GPIO and SIO AC specifications Updated XRES Pin Description and Xdata Address Map specifications Updated DFB and Comparator specifications Updated PHUB features section and RTC in sleep mode Updated IDAC and VDAC DC and Analog Global specifications Updated USBIO AC and Delta Sigma ADC specifications Updated PPOR and Voltage Monitors DC specifications Updated Drive Mode diagram Added 48-QFN Information Updated other electrical specifications *B 2824546 12/09/09 MKEA Updated I2C section to reflect 1 Mbps. Updated Table 11-6 and 11- 7 (Boost AC and DC specs); also added Shottky Diode specs. Changed current for sleep/hibernate mode to include SIO; Added footnote to analog global specs. Updated Figures 1-1, 6-2, 7-14, and 8-1. Updated Table 6-2 and Table 6-3 (Hibernate and Sleep rows) and Power Modes section. Updated GPIO and SIO AC specifications. Updated Gain error in IDAC and VDAC specifications. Updated description of VDDA spec in Table 11-1 and removed GPIO Clamp Current parameter. Updated number of UDBs on page 1. Moved FILO from ILO DC to AC table. Added PCB Layout and PCB Schematic diagrams. Updated Fgpioout spec (Table 11-9). Added duty cycle frequency in PLL AC spec table. Added note for Sleep and Hibernate modes and Active Mode specs in Table 11-2. Linked URL in Section 10.3 to PSoC Creator site. Updated Ja and Jc values in Table 13-1. Updated Single Sample Mode and Fast FIR Mode sections. Updated Input Resistance specification in Del-Sig ADC table. Added Tio_init parameter. Updated PGA and UGB AC Specs. Removed SPC ADC. Updated Boost Converter section. Added section 'SIO as Comparator'; updated Hysteresis spec (differential mode) in Table 11-10. Updated VBAT condition and deleted Vstart parameter in Table 11-6. Added 'Bytes' column for Tables 4-1 to 4-5. *C 2873322 02/04/10 MKEA Changed maximum value of PPOR_TR to '1'. Updated Vbias specification. Updated PCB Schematic. Updated Figure 8-1 and Figure 6-3. Updated Interrupt Vector table, Updated Sales links. Updated JTAG and SWD specifications. Removed Jp-p and Jperiod from ECO AC Spec table. Added note on sleep timer in Table 11-2. Updated ILO AC and DC specifications. Added Resolution parameter in VDAC and IDAC tables. Updated IOUT typical and maximum values. Changed Temperature Sensor range to -40 C to +85 C. Removed Latchup specification from Table 11-1. Document Number: 001-53304 Rev. *Z Page 129 of 137 PSoC(R) 3: CY8C34 Family Datasheet Description Title: PSoC(R) 3: CY8C34 Family Datasheet Programmable System-on-Chip (PSoC(R)) (continued) Document Number: 001-53304 Submission Orig. of Revision ECN Description of Change Date Change Updated Vb pin in PCB Schematic *D 2903576 04/01/10 MKEA Updated Tstartup parameter in AC Specifications table Added Load regulation and Line regulation parameters to Inductive Boost Regulator DC Specifications table Updated ICC parameter in LCD Direct Drive DC Specs table In page 1, updated internal oscillator range under Precision programmable clocking to start from 3 MHz Updated IOUT parameter in LCD Direct Drive DC Specs table Updated Table 6-2 and Table 6-3 Removed DFB block in Figure 1-1. Added bullets on CapSense in page 1; added CapSense column in Section 12 Removed some references to footnote [1] Changed INC_Rn cycles from 3 to 2 (Table 4-1) Added footnote in PLL AC Specification table Added PLL intermediate frequency row with footnote in PLL AC Specs table Added UDBs subsection under 11.6 Digital Peripherals Updated Figure 2-6 (PCB Layout) Updated Pin Descriptions section and modified Figures 6-6, 6-8, 6-9 Updated LVD in Tables 6-2 and 6-3; modified Low-power modes bullet in page 1 Added note to Figures 2-5 and 6-2; Updated Figure 6-2 to add capacitors for VDDA and VDDD pins. Updated boost converter section (6.2.2) Updated Tstartup values in Table 11-3. Removed IPOR rows from Table 11-67. Updated 6.3.1.1, Power Voltage Level Monitors. Updated section 5.2 and Table 11-2 to correct suggestion of execution from flash. Updated IMO max frequency in Figure 6-1, Table 11-77, and Table 11-78. Updated VREF specs in Table 11-21. Updated IDAC uncompensated gain error in Table 11-25. Updated Delay from Interrupt signal input to ISR code execution from ISR code in Table 11-57. Removed other line in table. Added sentence to last paragraph of section 6.1.1.3. Updated TRESP, high and low-power modes, in Table 11-24. Updated f_TCK values in Table 11-72 and f_SWDCK values in Table 11-73. Updated SNR condition in Table 11-20. Updated sleep wakeup time in Table 6-3 and Tsleep in Table 11-3. Added 1.71 V <= VDDD < 3.3 V, SWD over USBIO pins value to Table 11-73. Removed mention of hibernate reset (HRES) from page 1 features, Table 6-3, Section 6.2.1.4, Section 6.3, and Section 6.3.1.1. Change PPOR/PRES to TBDs in Section 6.3.1.1, Section 6.4.1.6 (changed PPOR to reset), Table 11-3 (changed PPOR to PRES), Table 11-67 (changed title, values TBD), and Table 11-68 (changed PPOR_TR to PRES_TR). Added sentence saying that LVD circuits can generate a reset to Section 6.3.1.1. Changed IDD values on page 1, page 5, and Table 11-2. Changed resume time value in Section 6.2.1.3. Changed ESD HBM value in Table 11-1. Changed sample rate row in Table 11-20. Removed VDDA = 1.65 V rows and changed BWag value in Table 11-22. Changed VIOFF values and changed CMRR value in Table 11-23. Changed INL max value in Table 11-27. Added max value to the Quiescent current specs in Tables 11-29 and 11-31. Changed occurrences of "Block" to "Row" and deleted the "ECC not included" footnote in Table 11-55. Changed max response time value in Tables 11-68 and 11-70. Changed the Startup time in Table 11-78. Added condition to intermediate frequency row in Table 11-84. Added row to Table 11-68. Added brown out note to Section 11.8.1. Document Number: 001-53304 Rev. *Z Page 130 of 137 PSoC(R) 3: CY8C34 Family Datasheet Description Title: PSoC(R) 3: CY8C34 Family Datasheet Programmable System-on-Chip (PSoC(R)) (continued) Document Number: 001-53304 Submission Orig. of Revision ECN Description of Change Date Change Replaced VDDIO with VDDD in USBIO diagram and specification tables, added text *E 2938381 05/27/10 MKEA in USBIO section of Electrical Specifications. Added Table 13-2 (Package MSL) Modified Tstorag condition and changed max spec to 100 Added bullet (Pass) under ALU (section 7.2.2.2) Added figures for kHzECO and MHzECO in the External Oscillator section Updated Figure 6-1(Clocking Subsystem diagram) Removed CPUCLK_DIV in table 5-2, Deleted Clock Divider SFR subsection Updated PSoC Creator Framework image Updated SIO DC Specifications (VIH and VIL parameters) Updated bullets in Clocking System and Clocking Distribution sections Updated Figure 8-2 Updated PCB Layout and Schematic, updated as per MTRB review comments Updated Table 6-3 (power changed to current) In 32kHZ EC DC Specifications table, changed ICC Max to 0.25 In IMO DC Specifications table, updated Supply Current values Updated GPIO DC Specs table Modified to support a maximum 50MHz CPU speed *F 2958674 06/22/10 SHEA Minor ECN to post data sheet to external website *G 2989685 08/04/10 MKEA Added USBIO 22 ohm DP and DM resistors to Simplified Block Diagram Added to Table 6-6 a footnote and references to same. Added sentences to the resistive pull-up and pull-down description bullets. Added sentence to Section 6.4.11, Adjustable Output Level. Updated section 5.5 External Memory Interface Updated Table 11-73 JTAG Interface AC Specifications Updated Table 11-74 SWD Interface AC Specifications Updated style changes as per new template. *H 3078568 11/04/10 MKEA Updated Table 11-2, "DC Specifications," on page 71 Updated "Current Digital-to-analog Converter (IDAC)" on page 94 Updated "Voltage Digital to Analog Converter (VDAC)" on page 99 *I 3107314 12/10/2010 MKEA Updated delta-sigma tables and graphs. Updated Flash AC specs Formatted table 11.2. Updated interrupt controller table Updated transimpedance amplifier section Updated SIO DC specs table Updated Voltage Monitors DC Specifications table Updated LCD Direct Drive DC specs table Replaced the Discrete Time Mixer and Continuous Time Mixer tables with Mixer DC and AC specs tables Updated ESDHBM value. Updated IDAC and VDAC sections Removed ESO parts from ordering information Changed USBIO pins from NC to DNU and removed redundant USBIO pin description notes Updated POR with brown out DC and AC specs Updated PGA AC specs Updated 32 kHz External Crystal DC Specifications Updated opamp AC specs Updated XRES IO specs Updated Inductive boost regulator section Delta sigma ADC spec updates Updated comparator section Removed buzz mode from Power Mode Transition diagram Updated opamp DC and AC spec tables Updated PGA DC table Document Number: 001-53304 Rev. *Z Page 131 of 137 PSoC(R) 3: CY8C34 Family Datasheet Description Title: PSoC(R) 3: CY8C34 Family Datasheet Programmable System-on-Chip (PSoC(R)) (continued) Document Number: 001-53304 Submission Orig. of Revision ECN Description of Change Date Change *J 3179219 02/22/2011 MKEA Updated conditions for flash data retention time. Updated 100-pin TQFP package spec. Updated EEPROM AC specifications. *K 3200146 03/28/2011 MKEA Removed Preliminary status from the data sheet. Updated JTAG ID Deleted Cin_G1, ADC input capacitance from Delta-Sigma ADC DC spec table Updated JTAG Interface AC Specifications and SWD Interface Specifications tables Updated USBIO DC specs Added 0.01 to max speed Updated Features on page 1 Added Section 5.5, Nonvolatile Latches Updated Flash AC specs Added CAN DC specs Updated delta-sigma graphs, noise histogram figures and RMS Noise spec tables Add reference to application note AN58304 in section 8.1 Updated 100-pin TQFP package spec Added oscillator, I/O, VDAC, regulator graphs Updated JTAG/SWD timing diagrams Updated GPIO and SIO AC specs Updated POR with Brown Out AC spec table Updated IDAC graphs Added DMA timing diagram, interrupt timing and interrupt vector, I2C timing diagrams Updated opamp graphs and PGA graphs Added full chip performance graphs Changed MHzECO range. Added "Solder Reflow Peak Temperature" table. *L 3259185 05/17/2011 MKEA Added JTAG and SWD interface connection diagrams Updated TJA and TJC values in Table 13-1 Changed typ and max values for the TCVos parameter in Opamp DC specifications table. Updated Clocking subsystem diagram. Changed VSSD to VSSB in the PSoC Power System diagram Updated Ordering information. Document Number: 001-53304 Rev. *Z Page 132 of 137 PSoC(R) 3: CY8C34 Family Datasheet Description Title: PSoC(R) 3: CY8C34 Family Datasheet Programmable System-on-Chip (PSoC(R)) (continued) Document Number: 001-53304 Submission Orig. of Revision ECN Description of Change Date Change *M 3464258 12/14/2011 MKEA Updated Analog Global specs Updated IDAC range Updated TIA section Modified VDDIO description in Section 3 Added note on Sleep and Hibernate modes in the Power Modes section Updated Boost Converter section Updated conditions for Inductive boost AC specs Added VDAC/IDAC noise graphs and specs Added pin capacitance specs for ECO pins Removed CL from 32 kHz External Crystal DC Specs table. Added reference to AN54439 in Section 6.1.2.2 Deleted T_SWDO_hold row from the SWD Interface AC Specifications table Removed Pin 46 connections in "Example Schematic for 100-pin TQFP Part with Power Connections" Updated Active Mode IDD description in Table 11-2. Added IDDDR and IDDAR specs in Table 11-2. Replaced "total device program time" with TPROG in Flash AC specs table Added IGPIO, ISIO and IUSBIO specs in Absolute Maximum Ratings Added conditions to ICC spec in 32 kHz External Crystal DC Specs table. Updated TCVOS value Removed Boost Efficiency vs VOUT graph Updated boost graphs Updated min value of GPIO input edge rate Removed 3.4 Mbps in UDBs from I2C section Updated USBIO Block diagram; added USBIO drive mode description Updated Analog Interconnect diagram Changed max IMO startup time to 12 s Added note for IIL spec in USBIO DC specs table Updated GPIO Block diagram Updated voltage reference specs Added text explaining power supply ramp up in Section 11-4. Document Number: 001-53304 Rev. *Z Page 133 of 137 PSoC(R) 3: CY8C34 Family Datasheet Description Title: PSoC(R) 3: CY8C34 Family Datasheet Programmable System-on-Chip (PSoC(R)) (continued) Document Number: 001-53304 Submission Orig. of Revision ECN Description of Change Date Change *N 3645908 06/14/2012 MKEA Added paragraph clarifying that to achieve low hibernate current, you must limit the frequency of IO input signals. Revised description of IPOR and clarified PRES term. Changed footnote to state that all GPIO input voltages - not just analog voltages - must be less than Vddio. Updated 100-TQFP package drawing Clarified description of opamp Iout spec Changed "compliant with I2C" to "compatible with I2C" Updated 48-QFN package drawing Changed reset status register description text to clarify that not all reset sources are in the register Updated example PCB layout figure Removed text stating that FTW is a wakeup source Changed supply ramp rate spec from 1 V/ns to 0.066 V/s Added "based on char" footnote to voltage monitors response time spec Changed analog global spec descriptions and values Added spec for ESDhbm for when Vssa and Vssd are separate Added a statement about support for JTAG programmers and file formats Changed comparator specs and conditions Added text describing flash cache, and updated related text Changed text and added figures describing Vddio source and sink Added a statement about support for JTAG programmers and file formats. Changed comparator specs and conditions Added text on adjustability of buzz frequency Updated terminology for "master" and "system" clock Deleted the text "debug operations are possible while the device is reset" Deleted and updated text regarding SIO performance under certain power ramp conditions Removed from boost mention of 22 H inductors. This included deleting some graph figures. Changed DAC high and low speed/power mode descriptions and conditions Changed IMO startup time spec Added text on XRES and PRES re-arm times Added text about usage in externally regulated mode Updated package diagram spec 001-45616 to *D revision. Changed supply ramp rate spec from 1 V/ns to 0.066 V/s Changed text describing SIO modes for overvoltage tolerance Added chip Idd specs for active and low-power modes, for multiple voltage, temperature and usage conditions Added chip Idd specs for active and low-power modes, for multiple voltage, temperature and usage conditions Changed load cap conditions in opamp specs Updated del-sig ADC spec tables, to replace three the instances of "16 bit" with "12 bit" *O 3648803 06/18/2012 WKA/ No changes. EROS update. MKEA Document Number: 001-53304 Rev. *Z Page 134 of 137 PSoC(R) 3: CY8C34 Family Datasheet Description Title: PSoC(R) 3: CY8C34 Family Datasheet Programmable System-on-Chip (PSoC(R)) (continued) Document Number: 001-53304 Submission Orig. of Revision ECN Description of Change Date Change *P 3732521 09/03/2012 MKEA Replaced IDDDR and IDDAR specs in Table 11-2, "DC Specifications," on page 71 that were dropped out in *N revision. Updated Table 11-32, "Mixer DC Specifications," on page 102, VOS Max value from 10 to 15. Updated Table 11-21, "12-bit Delta-sigma ADC DC Specifications," on page 91, IDD_12 Max value from 1.4 to 1.95 mA Replaced PSoC(R) 3 Programming AN62391 with TRM in footnote #59 and Section Table 9., "Programming, Debug Interfaces, Resources," on page 65 Removed Figure 11-8 (Efficiency vs Vout) Removed 62-MHz sub-row in Table 11-2, "DC Specifications," on page 71 Updated Table 11-19, "Opamp DC Specifications," on page 88, IDD Quiescent current row values from 200 and 270 to 250 and 400 respectively. Updated conditions for Storage Temperature in Table 11-1, "Absolute Maximum Ratings DC Specifications[18]," on page 70 Updated conditions and min values for NVL data retention time in Table 11-58, "NVL AC Specifications," on page 109. Updated Table 11-75, "ILO DC Specifications," on page 118. Removed following pruned parts from "Ordering Information" section on page 121. CY8C3444AXI-116 CY8C3445LTI-089 CY8C3446AXI-105 CY8C3446LTI-083 CY8C3446PVI-091 CY8C3446PVI-102 Updated PSoC 3 boost circuit value throughout the document. Updated package diagram 51-85061 to *F revision. *Q 3922905 03/06/2013 MKEA Updated IDD_XX parameters under Table 11-21, "12-bit Delta-sigma ADC DC Specifications," on page 91. Updated I2C section and updated GPIO and SIO DC specification tables. *R 4064707 07/18/2013 MKEA Added USB test ID in Features. Updated schematic in Section 2. Added paragraph for device reset warning in Section 5.4. Added NVL bit for DEBUG_EN in Section 5.5. Updated UDB PLD array diagram in Section 7.2.1. Changed Tstartup specs in Section 11.2.1. Changed GPIO rise and fall time specs in Section 11.4. Added Opamp IIB spec in Section 11.5.1. Added IMO spec condition: pre-assembly in Section 11.9.1. Added Appendix for CSP package (preliminary) *S 4118845 09/10/2013 MKEA Removed TSTG spec and added note clarifying the maximum storage temperature range in Table 11-1. Updated Vos spec conditions and TCVos in Table 11-21. Updated 100-TQFP package diagram. *T 4188568 11/14/2013 MKEA Updated delta-sigma Vos spec conditions. Added SIO Comparator specifications. *U 4385782 05/21/2014 MKEA Updated General Description and Features. Added More Information and PSoC Creator sections. Updated 100-pin TQFP package diagram. Document Number: 001-53304 Rev. *Z Page 135 of 137 PSoC(R) 3: CY8C34 Family Datasheet Description Title: PSoC(R) 3: CY8C34 Family Datasheet Programmable System-on-Chip (PSoC(R)) (continued) Document Number: 001-53304 Submission Orig. of Revision ECN Description of Change Date Change *V 4708125 03/31/2015 MKEA Added INL4 and DNL4 specs in VDAC DC Specifications. Updated Figure 6-11. Added second note after Figure 6-4. Added a reference to Fig 6-1 in Section 6.1.1 and Section 6.1.2. Updated Section 6.2.2. Added Section 7.8.1. Updated Boost specifications. *W 4807497 06/23/2015 MKEA Added reference to code examples in More Information. Updated typ value of TWRITE from 2 to 10 in EEPROM AC specs table. Changed "Device supply for USB operation" to "Device supply (VDDD) for USB operation" in USB DC Specifications. Clarified power supply sequencing and margin for VDDA and VDDD. Updated Serial Wire Debug Interface with limitations of debugging on Port 15. Updated Section 11.7.5. Updated Delta-sigma ADC DC Specifications *X 4932879 09/24/2015 MKEA Changed the Regulator Output Capacitor min and max from "-" to 0.9 and 1.1, respectively. Added reference to AN54439 in Section 11.9.3. Added MHz ECO DC specs table. Removed references to IPOR rearm issues in Section 6.3.1.1. Table 6-1: Changed DSI Fmax to 33 MHz. Figure 6-1: Changed External I/O or DSI to 0-33 MHz. Table 11-10: Changed Fgpioin Max to 33 MHz. Table 11-12: Changed Fsioin Max to 33 MHz. *Y 5322536 06/27/2016 MKEA Updated More Information. Corrected typos in External Electrical Connections. Added links to CAD Libraries in Section 2. *Z 5768975 06/09/2017 MKEA Updated the Cypress logo Document Number: 001-53304 Rev. *Z Page 136 of 137 PSoC(R) 3: CY8C34 Family Datasheet 18. Sales, Solutions, and Legal Information Worldwide Sales and Design Support Cypress maintains a worldwide network of offices, solution centers, manufacturer's representatives, and distributors. To find the office closest to you, visit us at Cypress Locations. PSoC(R) Solutions Products ARM(R) Cortex(R) Microcontrollers Automotive cypress.com/arm cypress.com/automotive Clocks & Buffers Interface cypress.com/clocks cypress.com/interface Internet of Things Memory cypress.com/iot cypress.com/memory Microcontrollers cypress.com/mcu PSoC cypress.com/psoc Power Management ICs Cypress Developer Community Forums | WICED IOT Forums | Projects | Video | Blogs | Training | Components Technical Support cypress.com/support cypress.com/pmic Touch Sensing cypress.com/touch USB Controllers Wireless Connectivity PSoC 1 | PSoC 3 | PSoC 4 | PSoC 5LP | PSoC 6 cypress.com/usb cypress.com/wireless (c) Cypress Semiconductor Corporation, 2009-2017. This document is the property of Cypress Semiconductor Corporation and its subsidiaries, including Spansion LLC ("Cypress"). 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