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 : 2.5V to5.5V
Wide Timekeeper voltage range : 1.4V to5.5V
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 Overview
32.768 kHz
32.768 kHz frequency output function
FOUT pin output (C-MOS output ), CL=30 pF
FOE pin enables output on/off control.
CLOCK AND CALENDAR
OSC DIVIDER FSEL pin enables output selectable 32.768 kHz or 1 Hz.
Power supply voltage monitoring function
Detection that power supply voltage descended to 1.7 V or less.
Automatic record to FDT-bit at the time of power supply
FOUT
decline detection.
OUTPUT
FSEL
CONTROLLER
SHIFT REGISTER
FOE
VOLTAGE
DATA
I / O
DETECT
CLK
CONTROL
CONTROLLER
WR
CE
CIRCUIT
Pin Function Terminal connection /External dimensions (Unit:mm)
RTC 4543SA
Signal Name Input / Output Function
The chip enabled input pin.
Input
CE 1. GND 14. FOUT
At the HIGH level, access becomes possible.
CLK Input
The shift clock input pin for serial data transfer.
2. N.C. 13. N.C.
Input
WR DATA pin input / output switching pin.
3. CE 12. N.C.
DATA Bi-directional Th e data input / output pin for serial data transfer.
32.768kHzor 1Hz clock output pin 4. FSEL 11. DATA
Output
FOUT (C-MOS output). 5.0
High impedance at output off.
5. WR 10. CLK
FOE Input The input pin for the FOUT output control.
6. FOE 9. VDD
Select the frequency that is output from the
Input
FSEL
FOUT pin.
7.4 0.2
7. N.C. 8. N.C.
VDD - Connected to a positive power supply.
GND -
Connected to a ground.
SOP 14 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) * Refer to application Manual for details.
Recommended Operating Conditions Current consumption characteristics
Ta =-40C to+85 C
Item Symbol Conditions Min. Typ. Max. Unit
Item Symbol Conditions Min. Typ. Max. Unit
Power voltage VDD - 2.5 5.0 5.5 V
VDD
- 1.5 3.0
Clock voltage VCLK - 1.4 5.0 5.5 V
=5V
Operating CE=GND
TOPR - -40 +25 +85 C
temperature
FOE=GND
Current VDD
IBK - 1.0 2.0 A
Consumption =3V
FOUT;output OFF
Frequency characteristics
(Hi-z)
VDD
- 0.5 1.0
Item Symbol Conditions Rating Unit
=2V
Ta=+25C
Frequency 6
f/f 10
B: 5 23
tolerance
VDD=5.0V Supply Voltage Detection Characteristic
Ta =-40C to+85 C
Ta=+25C Item Symbol Conditions Min. Typ. Max. Unit
Oscillation
3 Max. s
tSTA
start-up time
VDD=2.5V
Power supply
VDT VDD pin 1.4 1.7 2.0 V
detection voltage
Please ask for tighter tolerance.(Equivalent to 1 minute of monthly deviation )
1.27
3.2 0.1
10.1 0.2
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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.
Designed for automotive applications related to driving safety (Engine Control Unit, Air Bag, ESC etc ).
Notice
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