Real time clock module
REAL TIME CLOCK MODULE (I
2
C-Bus)
Low current consumption
Built
in frequency adjusted 32.768 kHz crystal unit.
2
Interface
Type
:
I C-Bus interface (400 kHz)
Operating
voltage range
:
1.6Vto5.5V
Wide
Timekeeper voltage range
:
1.1Vto5.5V
Low
backup current
:
160nA/3V(Typ.)
Frequency
output function
:
C-MOS or Open-Drain output
Built-in
user RAM
:
128 bit (8 bit x 16, SRAM)
The
various functions include full calendar, alarm, timer, etc.
This
product is conform to industrial standard SOP8 package,
and it can be mounted to the common land pattern.
Epson is prepared Linux driver for this product.
(http://www5.epsondevice.com/en/quartz/tech/linux_for_rtc/index.html)
The registered trademark Linux® is used pursuant to a sublicense from LMI(Linux Mark Institute)
The I
2
C-Bus is a trademark of NXP Semiconductors
Product Number (Please contact us)
RX8010SJ : X1B000242xxxx00
RX8010
SJ
Actual size
Block
diagram
BUILT-IN XTAL
( 32.768 kHz )
OSC
DIVIDER
CLOCK
and
CALENDR
Overview
Interface Type
• I
2
C-Bus high-speed bus specifications. (400 kHz)
Frequency
output function
• It may select a CMOS or open drain output
• Output frequency can be selected as 32.768kHz, 1024Hz, 1Hz.
TIMER REGISTER
/ IRQ1
/ IRQ2
ALARM,TIMER,FOUT
TIMER, FOUT
INTERRUPTS
CONTROLLER
ALARM REGISTER
Timer
function
Timer
function can be set up between
1/4096 second and 65535 hours.
Timing
period are 1hour, 1min, 64Hz, 4096Hz.
It is recorded automatic to TF-bit at the time of event occurrence,
and possible to output with /IRQ1 or /IRQ2 pin.
BUS
INTERFACE
CONTROL
REGISTER
and
SCL
SDA
CIRCUIT
SYSTEM
CONTROLLER
Alarm
function
Alarm function can be set to day of week,
day, hour, and minute.
It is recorded automatic to AF-bit at the time of event occurrence,
and possible to output with /IRQ1 pin.
USER RAM 128 bit
User RAM
128
bit (8 bit x 16, SRAM)
Pin Function
Terminal connection/External dimensions
RX8010SJ
(Unit:mm)
Signal Name
SCL
SDA
/ IRQ1
/ IRQ2
V
DD
GND
Input / Output
Input
Input/Output
Output
Output
Supply
Supply
Function
This is a shift clock input pin for serial data transmission.
This is the data input/output pin for serial data transfer.
This pin outputs interrupt signals ("L" level) for alarm, timer, time update,
and 32.768kHz. This is an N-ch open-drain output.
This pin outputs interrupt signals ("L" level) for timer and FOUT.
This is a C-MOS output.
This is a power-supply pin.
This pin is connected to a ground.
1.27
1.N.C.
2.N.C.
3./IRQ2
4.GND
8.V
DD
7.0
0.2
7./IRQ1
6.SCL
5.SDA
3.9
0.1
2.65 Max.
6.0
0.2
Unit: mm
SOP-8 pin
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)
Recommended Operating Conditions
Item
Power voltage
Clock voltage
Operating
temperature
Symbol
V
DD
V
CLK
T
OPR
Conditions
-
-
-
Min.
1.6
1.1
-40
Typ.
3.0
3.0
+25
Max.
5.5
5.5
+85
Unit
V
V
C
I
BK
Current
Consumption
I
32k
Item
Symbol
Refer to application manual for details.
Current consumption characteristics
Conditions
Input pins are "L"
fCLK = 0 Hz,
/IRQ1,2 = OFF
TSEL2=”1”
V
DD
=5V
V
DD
=3V
V
DD
=5V
fCLK = 0 Hz,
/IRQ1:
32.768kHz
ON,
/IRQ2: OFF
V
DD
=3V
Ta=-40Cto+85C
Min.
Typ.
Max.
Unit
-
-
-
-
-
160
0.60
0.52
350
nA
Frequency characteristics
Item
Frequency
tolerance
Oscillation
Start-up time
Symbol
f/f
Conditions
T
a
=+25C
V
DD
=3.0V
T
a
=+25C
V
DD
=1.6V
5.5V
T
a
=-40Cto+85C
V
DD
=
1.6V
5.5V
Rating
B:
523*
1Max.
3Max.
Unit
10
6
s
s
320
1.10
µA
0.90
t
STA
*Equivalent to 1 minute of monthly deviation
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.
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.
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 ).
ISO/TS16949 is the international standard that added the
sector-specific supplemental requirements for automotive
industry based on ISO9001.
Notice
This material is subject to change without notice.
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The information about applied circuitry, software, usage, etc. written in this material is intended for reference only. Seiko Epson does
not assume any liability for the occurrence of infringing on any patent or copyright of a third party. This material does not authorize the
licensing for any patent or intellectual copyrights.
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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.
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