Actual size
http://w w w.epsontoyocom.co.jp
Real time clock module
Real time clock moduleReal time clock module
Real time clock module
Epson Toyocom
Epson Toyo comEpson Toyo com
Epson Toyo com
Block diagram
Overview
OSC
FOUT
I / O
CONTROLLER
SHIFT REGISTER
CLK
DATA
CE
WR
32.7 68 kHz
DIVIDER
OUTPUT
CONTROLLER
FOE
CONTROL
CIRCUIT
FSEL
VOLTAG E
DETECT
CLOCK AND CALENDAR
•
••
•
32.768 kHz freque ncy ou t put function
• FOUT pin out put (C- MOS output ) , CL=30 pF
• FOE pin enables o utput on/of f control.
• FSEL pin enabl es output selectable 32.768 kHz or 1 Hz.
•
••
•
Power supply voltage monitoring function
• Detect ion that power supply voltage de scended t o 1.7 V or less.
• Automatic r ec or d to F DT-bit at the t ime of power su pply
decline detection.
Pin Function
Terminal connection
/
Ext er nal dimensions
(
Uni
t
:mm
)
Signa l Name Inp ut / Outp u t
Functi on
CE
Input The chip enabled input pin.
At the HIGH level, access becomes possible.
CLK
Input The shift cloc k input pin for serial data transfer.
WR
Input DATA pi n input / output switching pin.
DATA
Bi-directional The data input / output pin for serial data transfer.
FOUT
O utput 32.768 kHz or 1H z clock output pin
(C-MOS output).
High im pedance at output off.
FOE
Input The input pin for the FOUT output control.
FSEL
Input Sel ec t the frequency that is output from the
FOUT pin.
V
DD
-
Connected to a positive power supply.
GND
-
Connected to a ground.
RTC − 4543 SA
1. GND 14. FOUT
2. N.C. 13. N.C.
3. CE 12. N.C.
4. FSEL 11. DATA
5. WR 10. CLK
6. FOE 9. V
DD
7. N.C.
10.1
± 0.2
5.0
7.4
± 0.2
3.2
± 0.1
1.27
8. N.C.
SOP − 14 pin
RTC − 4543 SB
1. N.C. 18. N.C.
2. N.C. 17. N.C.
3. N.C. 16. N.C.
4. N.C. 15. N.C.
5. FOE 14. V
DD
6. WR 13. N.C.
7. FSEL 12. CLK
8. CE 11. DATA
9. GND
5.4
11.4
± 0.2
7.8
± 0.2
1.27
2.0
Max.
10. FOUT
SOP − 18 pin
Metal may be exposed on the top or bottom of this product. Thi s will not affect any quality, reliabili ty or electrical spec.
S
p
ecifications
(
characteristics
)
* Refer to a
pp
lication Manual for details.
!
!!
!
Recommended Operating Conditions
Item Symbol Condi tion Min. Typ. Max. Unit
P ower v ol tage V
DD
-
2.5 5.0 5.5 V
Clock v ol t age V
CLK
-
1.4 5.0 5.5 V
Opera tin g
temperature
T
OPR
-
-40 +25 +85 °C
!
!!
!
Freque ncy c haracte ri stics
Item Symbol Condition Rating Unit
Frequency
tolerance
∆ f / f T
a
= +25 °C
V
DD
= 5.0 V 5 ± 23 ∗ × 10
−6
Oscillation
start-up time
t
STA
T
a
= +25 °C
V
DD
= 2.5 V 3 Max. s
∗ Please ask for tighte r tolerance.(Equivalent to 1 minute of monthly deviation )
!
!!
!
Current consumpti on charact er istics
T
a
= -40 °C to +85 °C
Item Symbol Condition Min. Typ. Max. Unit
V
DD
= 5 V 1.5 3.0
V
DD
= 3 V 1.0 2.0
Current
Consumption
I
BK
CE = GND
FOE = GND
FOUT ; output OFF
(Hi-z) V
DD
= 2 V 0.5 1.0
µA
!
!!
!
Su pply Vol tage Detection Characteristic
T
a
= -40 °C to +85 °C
Item Symbol C ondition Min. Typ. Max. Unit
Power supp ly
detection voltage
V
DT
V
DD
pin 1.4 1.7 2.0 V
RTC-4543SA RTC-4543SB
Simple Function
SERIAL-INTER FACE REA L TIME CLOCK M ODULE
RTC
-
4543
SA
/
SB
•Built in frequency adjusted 32.768 kHz crystal unit.
•Interface type : 3-wire serial interface
•O perating vol t age rang e : 2.5 V to 5.5 V
•Wide Timekeeper voltage r ange: 1.4 V to 5.5 V
•3 2.768 kHz frequency output functi on : C-MOS output With Control Pin
•The various functions include full calendar, timer, and low voltage detection.
Product Nu m ber (Pl eas e cont act us)
RTC-4543SA : Q 41454351000200
RTC-4543SB : Q 41454361000200
“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 accelera te 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 automoti ve syste ms.
PROMOTION OF ENVIRONMENTAL MANAGEMENT SYSTEM
CONFORMING TO INTERNATIONAL STANDARDS
At Epson Toyocom, all environmental initiatives operate under
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.
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 establishme nts i n Japa n
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.
►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 y o 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.
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 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
ISO/TS 16949 is a global standard based on QS-9000, a severe standard
corresponding to the requirements from the automobile industry.
