RX-8731LC [EPSONTOYOCOM]
I2C-Bus INTERFACE REAL TIME CLOCK MODULE; I2C总线接口的实时时钟模块型号: | RX-8731LC |
厂家: | EPSON TOYOCOM |
描述: | I2C-Bus INTERFACE REAL TIME CLOCK MODULE |
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
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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,
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
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QS-9000 is an enhanced standard for quality assurance systems
formulated by leading U.S. automobile manufacturers based on the
►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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