Actual size
Real time clock module
Real time clock moduleReal time clock module
Real time clock module
Block diagram
Overview
INTERRUPTS
CONTROLLER
ALARM REGISTER
/ IRQ1
BUS
INTERFACE
CIRCUIT
CONTROL
REGISTER
and
SYSTEM
CONTROLLER
DIVIDER CLOCK
and
SDA
USER RAM 128 bit
SCL
CALENDR
TIMER REGISTER
ALARM,TIMER,FOUT
BUILT-IN XTAL
( 32.768 kHz )
/ IRQ2
OSC
TIMER, FOUT
•
••
•
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 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.
•
••
•
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 (8 bit x 16, SRAM)
Pin Function
Terminal connection
/
External dimensions
(
Unit
:mm
)
Signal Name
Input / Output Function
SCL Input This is a shift clock input pin for serial data transmission.
SDA Input/Output This is the data input/output pin for serial data transfer.
/ IRQ1 Output This pin outputs interrupt signals ("L" level) for alarm, timer, time update,
and 32.768kHz. This is an N-ch open-drain output.
/ IRQ2 Output This pin outputs interrupt signals ("L" level) for timer and FOUT.
This is a C-MOS output.
V
DD
Supply This is a power-supply pin.
GND Supply This pin is connected to a ground.
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.
Recommended Operating Conditions
Item Symbol
Conditions Min. Typ. Max.
Unit
Power voltage
V
DD
-
1.
6
3.0
5.5
V
Clock voltage V
CLK
-
1.1 3.0 5.5 V
Operating
temperature T
OPR
-
-40 +25 +85 °C
Frequency characteristics
Item Symbol
Conditions Rating Unit
Frequency
tolerance ∆ f / f T
a
=
+25
°
C
V
DD
= 3.0 V B: 5 ± 23 *
× 10
−6
Oscillation
Start-up time
t
STA
T
a
=
+25
°
C
V
DD
= 1.6 V
∼
5.5 V 1 Max. s
T
a
=
-40
°
C
to
+85
°
C
V
DD
= 1.6V ∼ 5.5V 3 Max. s
*Equivalent to 1 minute of monthly deviation
Current consumption characteristics
Ta = -40 °C to +85 °C
Item Symbol
Conditions Min.
Typ.
Max.
Unit
Current
Consumption
I
BK
Input pins are "L"
fCLK = 0 Hz,
/IRQ1,2 = OFF
TSEL2=”1”
V
DD
= 5 V
- - 350
nA
V
DD
= 3 V
- 160
320
I
32k
fCLK = 0 Hz,
/IRQ1:
32.768 kHz
ON,
/IRQ2: OFF
V
DD
= 5 V
- 0.60
1.10
µA
V
DD
= 3 V
- 0.52
0.90
REAL TIME CLOCK MODULE (I
2
C-Bus)
Low current consumption
RX8010
SJ
•Built in frequency adjusted 32.768 kHz crystal unit.
•Interface Type : I
2
C-Bus interface (400 kHz)
•Operating voltage range : 1.6 V to 5.5 V
•Wide voltage for time keeping. : 1.1 V to 5.5 V
•Low backup current : 160 nA / 3 V (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 prepared Linux driver for development.
(http://www5.epsondevice.com/en/information/support/linux_rtc/)
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 : X1B000242000100
SOP-8 pin
RX8010SJ
1.27
7
.0 ± 0.2
3.9 ± 0.1
6.0 ± 0.2
2.65 Max.
Unit: mm
1.N.C.
2.N.C.
3./IRQ2
4.GND
8.V
DD
7./IRQ1
6.SCL
5.SDA
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.
