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Real time clock module
Epson Toyocom
Product Number (Please contact us) RTC-4543SA : Q41454351000200 RTC-4543SB : Q41454361000200
Simple Function SERIAL-INTER FACE REA L TIME C LOCK MODULE
RTC - 4543 SA / SB
*Built in frequency adjusted 32.768 kHz crystal unit. *Interface type : 3-wire serial interface *Operating voltage range : 2.5 V to 5.5 V *Wide Timekeeper voltage range: 1.4 V to 5.5 V *32.768 kHz frequency output function: C-MOS output With Control Pin *The various functions include full calendar, timer, and low voltage detection.
Actual size RTC-4543SA
RTC-4543SB
Block diagram
32.768 kHz
Overview
* 32.768 kHz frequency output function
CLOCK AND CALENDAR
OSC
DIVIDER
*FOUT pin output (C-MOS output ), CL=30 pF *FOE pin enables output on/off control. *FSEL pin enables output selectable 32.768 kHz or 1 Hz.
* Power supply voltage monitoring function
FOUT FSEL FOE OUTPUT CONTROLLER SHIFT REGISTER
*Detection that power supply voltage descended to 1.7 V or less. *Automatic record to FDT-bit at the time of power supply decline detection.
VOLTAGE DATA CLK WR CE I/O CONTROLLER DETECT CONTROL CIRCUIT
Pin Function
Signal Name Input / Output
Terminal connection / External dimensions
Function
The chip enabled input pin. At the HIGH level, access becomes possible. The shift clock input pin f or serial dat a transfer. DATA pin input / output switching pin.
(Unit:mm)
RTC - 4543 SA
1.27
RTC - 4543 SB
1.27
CE CLK WR DATA FOUT FOE FSEL VDD GND
Input Input Input
1. 2. 3. 4. 5. 6. 7.
GND N.C. CE FSEL
14.
10.1 0.2
FOUT N.C. N.C. DATA CLK VDD N.C.
1. 2. 3.
N.C. N.C. N.C. N.C. FOE WR FSEL CE GND
18. 17.
11.4 0.2
N.C. N.C. N.C. N.C. VDD N.C. CLK DATA FOUT
13. 12. 11.
16. 15. 14.
Bi-directional The data input / output pin for serial data transfer. Output Input Input 32.768 kHz or 1Hz clock output pin (C-MOS output). High impedance at output off. The input pin f or the FOUT output control. Select t he frequency that is output from the FOUT pin. Connected to a positive power supply. Connected to a ground.
4. 5. 6. 7. 8.
5.0
WR
3.2 0.1
10. 9. 8.
5.4 2.0 Ma x.
13. 12. 11.
FOE N.C.
7.4 0 .2
9.
7.8 0.2
10.
SOP - 14 pin
SOP - 18 pin
Metal may be exposed on the top or bottom of this product. This w ill not affect any quality, reliability or electrical spec.
Specifications (characteristics)
! Recommended Operating Conditions
Item Power voltage Clock voltage
Operating temperature
* Refer to application Manual for details.
! Current consumption characteristics
Typ. 5.0 5.0 +25 Max. 5.5 5.5 +85 Unit V V C
Current Consumption
Ta = -40 C to +85 C
Symbol VDD VCLK TOPR
Condition -
Min. 2.5 1.4 -40
Item
Symbol
Condition VDD =5V VDD =3V VDD =2V
Min.
Typ. 1.5 1.0 0.5
Max. 3.0 2.0 1.0
Unit
IBK
CE = GND FOE = GND FOUT ;output OFF (Hi-z)
A
! Frequency characteristics
Item
Frequency tolerance Oscillation start-up time
Symbol f/f
Condition Ta = +25 C VDD = 5.0 V Ta = +25 C VDD = 2.5 V
Rating 5 23 3 Max.
Unit x 10-6 s
! Supply Voltage Detection Characteristic
Item
Power supply detection voltage
Ta = -40 C to +85 C
tSTA
Symbol VDT
Condition VDD pin
Min. 1.4
Typ. 1.7
Max. 2.0
Unit V
Please ask for tighter tolerance.(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, 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. 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.
PROMOTION OF ENVIRONMENTAL MANAGEMENT SYSTEM CONFORMING TO INTERNATIONAL STANDARDS
At Epson Toyocom, all environmental initiatives operate under ISO 14000 is an international standard for environmental management the Plan-Do-Check-Action(PDCA) cycle designed to achieve that was established by the International Standards Organization in 1996 continuous improvements. The environmental management against the background of growing concern regarding global warming, system (EMS) operates under the ISO 14001 environmental destruction of the ozone layer and global deforestation management standard. 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.
QS-9000 is an enhanced standard for quality assurance systems formulated by leading U.S. automobile manufacturers based on the international ISO 9000 series. ISO/TS 16949 is a global standard based on QS-9000, a severe standard corresponding to the requirements from the automobile industry.
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 Toyocom. 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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