Real time clock module
Product Number (Please contact us)
RTC-4543SA : Q41454352000200
REAL TIME CLOCK MODULE (SPI-Bus)
Simple Function
RTC - 4543
SA
Built
in frequency adjusted 32.768 kHz crystal unit.
Interface
type
:
3-wire serial interface
Operating
voltage range
:
2.5Vto5.5V
Wide
Timekeeper voltage range
:
1.4Vto5.5V
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
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
OUTPUT
FSEL
FOE
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
RTC4543SA
1.
2.
3.
4.
5.
6.
7.
GND
N.C.
CE
FSEL
5.0
(Unit:mm)
CE
CLK
WR
DATA
FOUT
FOE
FSEL
V
DD
GND
Input
Input
Input
The chip enabled input pin.
At the HIGHlevel, access becomes possible.
The shift clock input pin for serial data transfer.
DATA pin input / output switching pin.
1.27
14.
10.1
0.2
FOUT
N.C.
N.C.
DATA
CLK
V
DD
N.C.
13.
12.
11.
10.
Bi-directional The data input / output pin for serial data transfer.
Output
Input
Input
-
-
32.768kHzor 1Hz clock output pin
(C-MOS output).
High impedance at output off.
The input pin for the FOUT output control.
Select the frequency that is output from the
FOUT pin.
Connected to a positive power supply.
Connected to a ground.
WR
FOE
N.C.
7.4
0.2
3.2
0.1
9.
8.
SOP14 pin
The metal case inside of the molding compound may be exposed on the top or bottom of this product.
This purely cosmetic and does not have any effect on quality, reliability or electrical specs.
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
T
a
=-40Cto+85C
Symbol
V
DD
V
CLK
T
OPR
Conditions
-
-
-
Min.
2.5
1.4
-40
Item
Symbol
Conditions
V
DD
=5V
Min.
-
-
-
Typ.
1.5
1.0
0.5
Max.
3.0
2.0
1.0
Unit
I
BK
CE=GND
FOE=GND
Frequency characteristics
Item
Frequency
tolerance
Oscillation
start-up time
Symbol
f/f
Conditions
T
a
=+25°C
V
DD
=5.0V
T
a
=+25°C
V
DD
=2.5V
Rating
B:
523
3Max.
Unit
10
6
s
V
DD
=3V
FOUT;output OFF
(Hi-z)
V
DD
=2V
µA
Supply Voltage Detection Characteristic
Item
Power supply
detection voltage
T
a
=-40Cto+85C
t
STA
Symbol
V
DT
Conditions
V
DD
pin
Min.
1.4
Typ.
1.7
Max.
2.0
Unit
V
Please ask for tighter tolerance.(Equivalent to 1 minute of monthly deviation )
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CONFORMING TO INTERNATIONAL STANDARDS
At Seiko Epson, all environmental initiatives operate under the
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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.
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.
WORKING FOR HIGH QUALITY
In order provide high quality and reliable products and services
than meet customer needs,
Seiko Epson 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.
►Explanation
of the mark that are using it for the catalog
►Pb
free.
►Complies
with EU RoHS directive.
*About the products without the Pb-free mark.
Contains Pb in products exempted by EU RoHS directive.
(Contains Pb in sealing glass, high melting temperature type solder or other.)
►Designed
for automotive applications such as Car Multimedia, Body Electronics, Remote Keyless Entry etc.
ISO/TS16949 is the international standard that added the
sector-specific supplemental requirements for automotive
industry based on ISO9001.
►Designed
for automotive applications related to driving safety (Engine Control Unit, Air Bag, ESC etc ).
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 data, circuitry, software, usage, etc. written in this material is intended for reference only. Seiko Epson
does not assume any liability for the occurrence of customer damage or 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.
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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.
•
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