http://www.epsontoyocom.co.jp
Actual size
Real time clock module Epson Toyocom
Block diagram
Overview
Control 1
Seconds
Minutes
Hours
Days
Month / Century
Control 2
Weekdays
Years
Minutes Alarm
Hour Alarm
Day Alarm
Weekday Alarm
Timer Control
CLKOUT frequency
Timer
00
0F
OUTPUT
CONTROL
CONTROL
LOGIC
POR
OSC
32.768 kHz
CRYSTAL
CLKOUT
CLKOE
DIVIDER
Voltage Detector
ADDRESS
REGISTER
I2C-BUS
INTERFACE
/ INT
SCL
SDA
Interface Type
•I2C-Bus Interface.(Hi-speed bus specifications 400kHz)
I2C-Bus slave address:read A3h and write A2h
Low Timekeeper voltage range
•1.0V to5.5V/ Ta=-20Cto+70C
•1.1V to5.5V/ Ta=-40Cto+85C
32.768 kHz frequency output function
•CLKOUT pin output (C-MOS output ), CL=30 pF
•CLKOE pin enables output on/off control.
•Output selectable
<32.768kHz,1024Hz,32Hz,1Hz>
The various interrupt function
•Timer function can be set up between 1/4096 second and
255 minutes.
• Alarm function can be set to any combination of day of
week, hour, or minute.
Pin Function
Terminal connection/External dimensions
(Unit׃mm)
Signal Name
Input/Output
Function
SCL
Input
Serial clock input pin.
SDA
Bi-directional
Data input and output pin.
CLKOUT
Output
CLKOE
Input
32.768kHzclock output pin with the
output control function. (C-MOS)
CLKOE pin control the condition of
CLKOUT with FE-bit, etc.
CLKOE pin
input
FE
bit
CLKOUT pin
output
1
Output
(C-MOS)
HIGH
0
OFF
(LOW)
1
OFF
(LOW)
LOW
0
OFF
(LOW)
/INT
Output
Interrupt output (N-ch open drain)
VDD
-
Connected to a positive power supply.
GND
-
Connected to a ground.
RTC8564JE
1.
N.C.
20.
N.C.
2.
N.C.
19.
N.C.
3.
CLKOE
18.
N.C.
4.
VDD
17.
N.C.
5.
CLKOUT
16.
N.C.
6.
SCL
15.
N.C.
7.
SDA
14.
N.C.
8.
(GND)
13.
N.C.
9.
GND
12.
N.C.
10.
/INT
1.5Max.
7.00.3
5.4
6.00.2
0.65
11.
N.C.
VSOJ20 pin
RTC8564NB
1.
/INT
22.
N.C.
2.
GND
21.
N.C.
3.
(GND)
20.
N.C.
4.
N.C.
19.
N.C.
5.
SDA
18.
N.C.
6.
SCL
17.
N.C.
7.
CLKOUT
16.
N.C.
8.
VDD
15.
N.C.
9.
CLKOE
14.
N.C.
10.
N.C.
13.

11.
N.C.
4.8
6.3Max.
5.00.2
0.5
1.30.1
12.

SON22 pin
RX8564LC
1.
N.C.
12.
N.C.
2.
N.C.
11.
CLKOE
3.
N.C.
10.
VDD
4.
N.C.
9.
CLKOUT
5.
/INT
8.
SCL
6.
GND
0.5
2.4
3.6
1.2 Max.
2.8
7.
SDA
VSOJ12pin
 Metal may be exposed on the top or bottom of this product. This will not affect any quality , reliability or electrical spec.
Specifications (characteristics)
Refer to application manual for details.
Current consumption characteristics
Ta=40Cto+85C
Item
Symbol
Condition
Min.
Typ.
Max.
Unit
VDD
=5V
330
800
IBK
fSCL=0Hz
CLKOE=GND
CLKOUT;
output OFF(LOW)
VDD
=3V
275
700
nA
VDD
=5V
2.5
3.4
Current
Consumtion
I32k
fSCL=0Hz
CLKOE=VDD
CLKOUT;
32.768kHz output ON
(Output=OPEN ;
CL=0pF)
VDD
=3V
1.5
2.2
A
RTC-8564JE
RTC-8564NB
Low current consumption
I
2
C-Bus INTERFACE REAL TIME CLOCK MODULE
RTC - 8564JE/NB
RX - 8564 LC
Built in frequency adjusted 32.768 kHz crystal unit.
Interface Type ׃ I2C-Bus Interface (400kHz)
Operating voltage range ׃ 1.8Vto5.5V
Timekeeper voltage range ׃ 1.0Vto5.5V/-20C to +70C
Low backup current ׃ 275nA/3.0V(Typ.)
32.768 kHz frequency output function ׃ C-MOS output With Control Pin
The various functions include full calendar, alarm, timer,
and power supply voltage monitoring function
* The I2C-Bus is a trademark of NXP Semiconductors
Product Number (Please contact us)
RTC-8564JE : Q41856471000100
RTC-8564NB : Q41856491000200
RX-8564LC : Q418564C2xxxx00
RX-8564LC
Recommended Operating Conditions
Item
Symbol
Condition
Min.
Typ.
Max.
Unit
Power voltage
VDD
-
1.8
3.0
5.5
V
Clock voltage
VCLK
-
VLOW
3.0
5.5
V
Operating
temperature
TOPR
-
-40
+25
+85
°C
Low voltage detection
Item
Symbol
Condition
Typ.
Max.
Unit
Low voltage
detection
VLOW
JE,NB
Ta=-20C+70C
0.9
1.0
V
Ta=-40C+85C
0.9
1.1
V
LC
Ta=-20C+70C
0.9
1.2
V
Ta=-40C+85C
0.9
1.3
V
Frequency characteristics
Item
Symbol
Condition
Rating
Unit
Frequency
tolerance
f/f
Ta=+25°C
VDD=3.0V
523*
106
* Please ask for tighter tolerance. (Equivalent to 1 minute of monthly deviation)