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EPSON实时时钟模块rx8010sj接口I2C-Bus;电压:1.6V~5.5V;CMOS输出/开漏输出,rx8010sj包括时刻,日历,警报器,定时器功能等这个产品符合SOP8 封装的工业标准。EPSON的RTC时钟模块内部: 将32.768KHz的晶体和时钟IC组合在一个封装中, 并在出厂时进行时钟精度调整, 用户无需再进行电路匹配和时钟调整, 同时由于内置晶体, 大大减少了PCB电路面积。 RX8010SJ两个功能特性:一、小和高可靠性;二、调整时钟精度;
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ETM37E-06
Preliminary
Application Manua
l
Real Time Clock Module
RX
8010SJ
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.
ETM37E Revision History
Rev No. Date Page Description
ETM37E-01 14.Jul.2013 Release
ETM37E-02 06.Sep.2013 28 Corrected a setting data of Flow chart Ex2
ETM37E-03 13.Sep.2013 1 Changed a 1. Overview.
5 Deleted contents of a 8.1 DC characteristics.
5 Corrected a fCLK to fSCL.
6 Changed a comment of 8.2.1. AC characteristics.
7 Deleted a comment of “Target spec”
7 Deleted a software command of TS sample.
20,21 Corrected a 13.3. Alarm interrupt Function.
28 Corrected a setting data of Flow chart Ex2
ETM37E-04 06.Nov.2013 4 Corrected a Item of 7. Frequency Characteristics
6 Corrected a caution of 8.2.1. AC characteristics(1)
ETM37E-05 13.Dec.2013 12 Changed a 12.2. Register table
34
Corrected a 13.8.7. The example of the communication
wave pattern
ETM37E-06 25.Sep.2014 7,26
Corrected a power-on reset procedure by the software
command.
RX8010 SJ
ETM37E-06
Contents
1. Overview ........................................................................................................................ 1
2. Block Diagram ............................................................................................................... 1
3. Terminal description ..................................................................................................... 2
4. External Dimensions ...................................................................................................... 3
5.
Absolute Maximum Ratings ........................................................................................... 4
6. Recommended Operating Conditions ............................................................................ 4
7. Frequency Characteristics ............................................................................................. 4
8.
Electrical Characteristics .............................................................................................. 5
9. Matters that demand special attention on use ................................................................ 7
10. Reference information ................................................................................................. 9
11. Application notes ....................................................................................................... 10
12.
Overview of Functions and Description of Registers ................................................ 11
12.1. Overview of Functions .................................................................................................................. 11
12.2. Register table ............................................................................................................................... 12
12.3. Description of registers ................................................................................................................. 13
13. How to use ................................................................................................................. 15
13.1. Clock calendar explanation .......................................................................................................... 15
13.2. Fixed-cycle Timer Interrupt Function ............................................................................................ 15
13.3. Alarm Interrupt Function ............................................................................................................... 20
13.4. Time Update Interrupt Function .................................................................................................... 23
13.5. Frequency stop detection function ............................................................................................... 25
13.6. FOUT function [clock output function] .......................................................................................... 25
13.7. Flow-chart ..................................................................................................................................... 26
13.8. Reading/Writing Data via the I
2
C Bus Interface ........................................................................... 31
RX8010
SJ
Page − 1
ETM37E-06
Low current consumption
SERIAL-INTERFACE
REAL TIME CLOCK MODULE
RX8010
SJ
• Built in frequency adjusted 32.768-kHz crystal unit.
• Real-time clock function : Clock/calendar function,Long timer function, alarm interrupt function, etc.
• User RAM : Built in 128 bit RAM
• Frequency output function : 32.768 kHz, 1024 Hz, 1Hz
• Interface type : I
2
C-Bus
• Interface voltage range : 1.6 V ∼ 5.5 V
• Timekeeper voltage range
: 1.1 V ∼ 5.5 V
• Backup current consumption : 160 nA
Typ
/ 3 V
The I
2
C-Bus is a trademark of NXP Semiconductors.
1. Overview
This is a real-time clock module of the serial interface system that incorporates a 32.768 kHz crystal oscillator.
The real-time clock function incorporates not only a calendar and clock counter for the year, month, day, day of the
week, hour, minute, and second, but also a time alarm, interval timer, and time update interruption, among other
features.
All of these many functions are implemented in a thin, compact SOP package, which makes it suitable for various kinds
of small electronic devices.
2. Block Diagram
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
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