Actual size
Real time clock module
Block diagram
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
The metal case inside of the molding compound may be exposed on the top or bottom of this product.
This purely cosmetic and does not have any effect on quality, reliability or electrical specs.
Specifications (characteristics)
Refer to application manual for details.
Current consumption characteristics
Ta=-40Cto+85C
Item
Symbol
Conditions
Min.
Typ.
Max.
Unit
Current
Consumtion
IBK
fSCL=0Hz
CLKOE=GND
CLKOUT;
output OFF(LOW)
VDD
=5V
-
330
800
nA
VDD
=3V
-
275
700
I32k
fSCL=0Hz
CLKOE=VDD
CLKOUT;
32.768kHz output ON
(Output=OPEN ;
CL=0pF)
VDD
=5V
-
2.5
3.4
A
VDD
=3V
-
1.5
2.2
RTC-8564JE
RTC-8564NB
REAL TIME CLOCK MODULE (I
2
C-Bus)
Low current consumption
RTC - 8564JE/NB
RX - 8564 LC
•Built in frequency adjusted 32.768 kHz crystal unit.
•Interface Type ׃ I2C-Bus Interface (400kHz)
•Operating voltage range ׃ 81. Vto5.5V
•Timekeeper voltage range ׃ 01. Vto5.5V/-20C to +70C
•Low backup current ׃ 275 nA/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 : Q418564C2000100
RX-8564LC
Recommended Operating Conditions
Item
Symbol
Conditions
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
Conditions
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
Conditions
Rating
Unit
Frequency
tolerance
f/f
Ta=+25°C
VDD=3.0V
B: 523*
106
* Please ask for tighter tolerance. (Equivalent to ±1 minute of monthly deviation)
*Stop using the glue
Any glue must never use it after soldering LC-package to a circuit board.This product has glass on the back side of a package.When glue invasions
between circuit board side and glass side, then glass cracks by thermal expansion of glue.In this case a crystal oscillation stops.Consider glue
abolition or glue do not touch to LC-package
PROMOTION OF ENVIRONMENTAL MANAGEMENT SYSTEM
CONFORMING TO INTERNATIONAL STANDARDS
At Seiko Epson, all environmental initiatives operate under the
Plan-Do-Check-Action (PDCA) cycle designed to achieve continuous
improvements. The environmental management system (EMS)
operates under the ISO 14001 environmental management standard.
All of our major manufacturing and non-manufacturing sites, in
Japan and overseas, completed the acquisition of ISO 14001
certification.
WORKING FOR HIGH QUALITY
In order provide high quality and reliable products and services
than meet customer needs,
Seiko Epson made early efforts towards obtaining ISO9000 series
certification and has acquired ISO9001 for all business
establishments in Japan and abroad. We have also acquired ISO/TS
16949 certification that is requested strongly by major automotive
manufacturers as standard.
►Explanation of the mark that are using it for the catalog
►Pb free.
►Complies with EU RoHS directive.
*About the products without the Pb-free mark.
Contains Pb in products exempted by EU RoHS directive.
(Contains Pb in sealing glass, high melting temperature type solder or other.)
►Designed for automotive applications such as Car Multimedia, Body Electronics, Remote Keyless Entry etc.
►Designed for automotive applications related to driving safety (Engine Control Unit, Air Bag, ESC etc ).
Seiko Epson Corporation
Notice
• This material is subject to change without notice.
• Any part of this material may not be reproduced or duplicated in any form or any means without the written permission of Seiko Epson.
• The information about applied data, circuitry, software, usage, etc. written in this material is intended for reference only. Seiko Epson
does not assume any liability for the occurrence of customer damage or infringing on any patent or copyright of a third party. This
material does not authorize the licensing for any patent or intellectual copyrights.
• When exporting the products or technology described in this material, you should comply with the applicable export control laws and
regulations and follow the procedures required by such laws and regulations.
• You are requested not to use the products (and any technical information furnished, if any) for the development and/or manufacture of
weapon of mass destruction or for other military purposes. You are also requested that you would not make the products available to
any third party who may use the products for such prohibited purposes.
• These products are intended for general use in electronic equipment. When using them in specific applications that require extremely
high reliability, such as the applications stated below, you must obtain permission from Seiko Epson in advance.
/ Space equipment (artificial satellites, rockets, etc.) / Transportation vehicles and related (automobiles, aircraft, trains,
vessels, etc.) / Medical instruments to sustain life / Submarine transmitters / Power stations and related / Fire work equipment
and security equipment / traffic control equipment / and others requiring equivalent reliability.
• All brands or product names mentioned herein are trademarks and/or registered trademarks of their respective.
ISO 14000 is an international standard for environmental
management that was established by the International
Standards Organization in 1996 against the background of
growing concern regarding global warming, destruction of
the ozone layer, and global deforestation.
ISO/TS16949 is the international standard that added the
sector-specific supplemental requirements for automotive
industry based on ISO9001.