RX-8731LC [EPSONTOYOCOM]

I2C-Bus INTERFACE REAL TIME CLOCK MODULE; I2C总线接口的实时时钟模块
RX-8731LC
型号: RX-8731LC
厂家: EPSON TOYOCOM    EPSON TOYOCOM
描述:

I2C-Bus INTERFACE REAL TIME CLOCK MODULE
I2C总线接口的实时时钟模块

时钟
文件: 总2页 (文件大小:293K)
中文:  中文翻译
下载:  下载PDF数据表文档文件
Real time clock module  
Epson Toyocom  
Product Number (Please contact us)  
RX-8731LC : Q418731C1000100  
Built-in EEPROM and Unique ID-ROM  
I2C-Bus INTERFACE REAL TIME CLOCK MODULE  
RX - 8731LC  
Built in frequency adjusted 32.768 kHz crystal unit.  
Interface Type  
:
:
:
:
I2C-Bus interface (400 kHz)  
1.7 V to 5.5 V  
Operating voltage range  
Wide Timekeeper voltage range  
Low backup current  
1.3 V to 5.5 V  
0.35  
C-MOS output With Control Pin  
The various functions include full calendar, alarm, timer.  
µA / 3 V (Typ.)  
Actual size  
32.768 kHz frequency output function  
:
* The I2C-Bus is a trademark of NXP Semiconductors  
Block diagram  
Overview  
32.768 kHz  
Built in EEPROM and ID-ROM  
• Built in 10 Byte ( 80 bit) EEPROM  
• Built in 6 Byte ( 48 bit ) ID-ROM  
DIVIDER  
OSC  
CLOCK  
and  
CALENDAR  
FOE  
Programmable I/O ports  
FOUT  
CONTROLLER  
• 4 Programmable I/O ports  
FOUT  
TIMER REGISTER  
ALARM REGISTER  
INTERRUPTS  
CONTROLLER  
Interface Type  
/ IRQ  
• I2C-Bus high-speed bus specifications. (400 kHz)  
4
32.768 kHz frequency output function  
• FOUT pin output (C-MOS output), CL=30 pF  
• FOE pin enables output on/off control.  
• Output frequency is selectable.  
I/O Port  
P00 – P03  
CONTROL  
REGISTER  
I2C-Bus  
A 0  
and  
< 32.768 kHz, 1024 Hz, 1 Hz >  
INTERFACE  
CIRCUIT  
SYSTEM  
SDA  
CONTROLLER  
The various interrupt function  
SCL  
• Alarm interrupt function  
• Timer interrupt function  
• Update interrupt function  
EEPROM  
10 Byte ( 80 bit )  
ID-ROM  
6 Byte ( 48 bit )  
Pin Function  
Terminalconnection /Externaldimensions  
(Unit:mm)  
Signal Name Input / Output  
Function  
RX 8731 LC  
SCL  
SDA  
Input  
Serial Clock input pin.  
1. FOE  
2. P00  
3. SDA  
4. SCL  
5. A 0  
12. VDD  
11. P01  
10. P02  
9. P03  
Bi-directional  
Data input and output pin.  
A 0  
Input  
Device address A0 input pin.  
FOUT pin is 32.768 kHz clock output pin ( C-MOS ) that output control is  
possible.  
FOE pin control the frequency output from FOUT pin with FSEL1-bit and  
FSEL0-bit.  
FOUT  
Output  
2.4  
2.8  
FOE  
/ IRQ  
Input  
Output  
Interrupt output pin. ( N-ch open drain )  
8. / IRQ  
7. FOUT  
P00  
P01  
P02  
P03  
6. GND  
Bi-directional  
Programmable I/O ports.  
VSOJ 12pin  
DD  
V
Connected to a positive power supply.  
Connected to a ground.  
GND  
Specifications (characteristics)  
Refer to application manual for details.  
!
Recommended Operating Conditions  
!
Current consumption characteristics  
Ta = 40 °C to +70 °C  
Item  
Symbol  
Condition  
Min.  
Typ.  
Max.  
Unit  
Item  
Symbol  
Condition  
Min. Typ. Max. Unit  
DD  
Power voltage  
Clock voltage  
Operating  
V
V
1.7  
1.3  
3.0  
3.0  
5.5  
5.5  
V
V
CLK  
DD  
V
fSCL  
= 0 Hz  
/ IRQ = OFF  
= 5 V  
0.45 0.9  
µA  
°
C
T
OPR  
-40  
+25  
+85  
temperature  
BK  
I
VDD  
FOUT : output OFF  
( Hi - z )  
!
Frequency characteristics  
= 3 V  
0.35 0.7  
Item  
Symbol  
Condition  
Rating  
Unit  
Current  
Consumption  
DD  
V
°
T
V
a
= +25 C  
6
10  
Frequency  
tolerance  
f
SCL  
= 0 Hz  
/ IRQ = OFF  
±
*
×
f / f  
5
23  
= 5 V  
8.0 16.0  
µA  
DD  
= 3.0 V  
a
°
T = +25 C  
32k  
I
s
1 Max.  
3 Max.  
FOUT :  
32.768 kHz output  
CL = 30 pF  
DD  
V
DD  
V
= 3 V  
Oscillation  
Start-up time  
= 1.6 V  
tSTA  
°
°
a
5.0 10.0  
T = -40 C to +85 C  
s
VDD = 1.6 V  
*Equivalent to 1 minute of monthly deviation  
http://www.epsontoyocom.co.jp  
“QMEMS” EPSON TOYOCOM  
In order to meet customer needs in a rapidly advancing digital,  
Quartz devices have become crucial in the network environment where  
products are increasingly intended for broadband, ubiquitous applications  
and where various types of terminals can transfer information almost  
immediately via LAN and WAN on a global scale. Epson Toyocom  
Corporation addresses every single aspect within a network environment.  
The new corporation offers “Digital Convergence” solutions to problems  
arising with products for consumer use, such as, core network systems  
and automotive systems.  
broadband and ubiquitous society, we are committed to offering products  
that are one step ahead of the market and a rank above the rest in quality.  
To achieve our goals, we follow a “3D (three device) strategy” designed to  
drive both horizontal and vertical growth. We will to grow our three device  
categories of “Timing Devices”, ”Sensing Devices” and “Optical Devices”,  
and expand vertical growth through a combination of products from these  
categories.  
A Quartz MEMS is any high added value quartz device that exploits the  
characteristics of quartz crystal material but that is produced using MEMS  
(micro-electro-mechanical system) processing technology.  
Market needs are advancing faster than previously imagined toward  
smaller, more stable crystal products, but we will stay ahead of the curve  
by rolling out products that exceed market speed and quality  
requirements. We want to further accelerate the 3D strategy by QMEMS.  
PROMOTION OF ENVIRONMENTAL MANAGEMENT SYSTEM  
CONFORMING TO INTERNATIONAL STANDARDS  
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.  
At Epson Toyocom, all environmental initiatives operate under  
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  
All of our major manufacturing and non-manufacturing sites,in Japan and overseas, completed the acquisition of ISO 14001 certification.  
In the future, new group companies will be expected to acquire the certification around the third year of operations.  
WORKING FOR HIGH QUALITY  
In order provide high quality and reliable products and services than meet customer needs,  
Epson Toyocom 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.  
ISO/TS 16949 is a global standard based on QS-9000, a severe standard  
corresponding to the requirements from the automobile industry.  
QS-9000 is an enhanced standard for quality assurance systems  
formulated by leading U.S. automobile manufacturers based on the  
international ISO 9000 series.  
Explanation of the mark that are using it for the catalog  
Pb free.  
Complies with EU RoHS directive.  
Pb free terminal designed. Contains Pb in products exempted by RoHS directive.  
(Contains Pb in sealing glass, high melting temperature type solder or other.)  
Complies with EU RoHS directive.  
The products have been designed for high reliability applications such as Automotive.  
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 Epson To yo c o m .  
The information, applied circuitry, programming, usage, etc., written in this material is intended for reference only. Epson Toyocom 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.  
Any product described in this material may contain technology or the subject relating to strategic products under the control of the Foreign  
Exchange and Foreign Trade Law of Japan and may require an export license from the Ministry of International Trade and Industry or other  
approval from another government agency.  
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 Epson Toyocom 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.  
In this new crystal master for Epson Toyocom, product codes and markings will remain as previously identified prior to the merger.  
Due to the on-going strategy of gradual unification of part numbers, please review product codes and markings, as they will change during the  
course of the coming months.  
We apologize for the inconvenience, but we will eventually have a unified part numbering system for Epson Toyocom that will be user friendly.  

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