RX-8581SA:B [SEIKO]
REAL TIME CLOCK, PDSO14, ROHS COMPLIANT, SOP-14;
| 型号： | RX-8581SA:B |
| 厂家： | 
SEIKO EPSON CORPORATION |
| 描述： | REAL TIME CLOCK, PDSO14, ROHS COMPLIANT, SOP-14 时钟 光电二极管 外围集成电路 |
| 文件： | 总2页 (文件大小：283K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Real time clock module
Product Number (Please contact us)
RX-8581SA : Q41858152xxxx00
RX-8581JE : Q41858171xxxx00
RX-8581NB : Q41858192000200
REAL TIME CLOCK MODULE (I2C-Bus)
RX - 8581SA/JE/NB
Built-in frequency adjusted 32.768kHz crystal unit.
Interface Type
: I2C-Bus Interface(400kHz)
Operating voltage range
Wide Timekeeper voltage range
Low backup current
: 1.8V to5.5V
: 1.6Vto5.5V
: 0.45A/3V(Typ.)
32.768 kHz frequency output function : C-MOS output With Control Pin
The various functions include full calendar, alarm, timer.
Actual size
RX-8581SA
RX-8581JE
RX-8581NB
* The I2C-Bus is a trademark of NXP Semiconductors
Block diagram
Overview
Interface Type
• I2C-Bus interface. (Hi-speed bus specifications 400kHz)
I2C-Bus slave address:read A3h and write A2h
32.768 kHz
CLOCK
and
CALENDAR
DIVIDER
32.768 kHz frequency output function
• FOUT pin output (C-MOS output ), CL=30 pF
• 32.768 kHz clock frequency output. (Duty 50 ±5 %)
OSC
FOUT
FOE
FOUT
TIMER
Timer function
CONTROLLER
REGISTER
• Timer interrupt function can be set up between
1/4096 second and 4095 minutes.
• It is recorded automatic to TF-bit at the time of event
occurrence,and possible to output with /TIRQ pin output
(N-ch open-drain output).
INTERRUPTS
CONTROLLER
ALARM
REGISTER
/ INT
Interrupt function
CONTROL
REGISTER
• Alarm interrupt function, Time update interrupt function.
I2C-BUS
SCL
SDA
INTERFACE
CIRCUIT
and
SYSTEM
CONTROLLER
Terminal connection/External dimensions
(Unit:mm)
RX8581SA
RX8581JE
RX8581NB
1.
2. GND
3.
22. N.C.
21. N.C.
20. N.C.
19. N.C.
18. N.C.
17. N.C.
16. N.C.
15. N.C.
14. N.C.
/INT
1. N.C.
20. N.C.
1. N.C.
2. SCL
3. SDA
4. N.C.
5. GND
6. N.C.
14. FOUT
13. N.C.
12. N.C.
11. VDD
10. FOE
9. N.C.
2. N.C.
3. FOE
4. VDD
5. FOUT
6. SCL
7. SDA
19. N.C.
18. N.C.
17. N.C.
16. N.C.
15. N.C.
14. N.C.
(VDD)
4. N.C.
5. SDA
6. SCL
7. FOUT
8. VDD
5.0
4.8
5.4
1.30.1
8.
9. GND
10.
Max. 13. N.C.
(VDD)
1.5
9. FOE
10. N.C.
11. N.C.
12. N.C.
13.
12.
7.40.2
7.
8. N.C.
/INT
5.00.2
6.00.2
11. N.C.
/INT
SOP14 pin
VSOJ20 pin
SON22 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)
Refer to application manual for details.
Recommended Operating Conditions
Current consumption characteristics
Ta=-40Cto+85C
Item
Symbol
Conditions
Min.
Typ.
Max.
Unit
Item
Symbol
Conditions
Min. Typ. Max. Unit
Power voltage
Clock voltage
Operating
VDD
VCLK
1.8
1.6
3.0
3.0
5.5
5.5
V
V
VDD
=5V
fSCL=0Hz
-
-
-
-
0.65 1.2
0.45 0.8
8.0 20.0
5.0 12.0
FOE=GND
TOPR
-40
+25
+85
C
temperature
IBK
µA
µA
FOUT;
output OFF(LOW)
VDD
=3V
Frequency characteristics
Current
Consumption
Item
Symbol
Conditions
Rating
Unit
fSCL=0Hz
FOE=VDD
VDD
=5V
Frequency
tolerance
Ta=+25C
VDD=3.0V
6
f/f
10
B: 523
505
I32k
FOUT;
32.768kHz output ON
CL=30pF
VDD
=3V
Ta=-40Cto+85C
VDD=2.4Vto5.5V
FOUT output Duty
tw/t
%
Please ask for tighter tolerance.( 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
ISO 14000 is an international standard for environmental
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.
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,
ISO/TS16949 is the international standard that added the
sector-specific supplemental requirements for automotive
industry based on ISO9001.
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 ).
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 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.
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.
Seiko Epson Corporation
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