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RTC-4543SA Datasheet(PDF) 1 Page - Epson ToYoCom

Part No. RTC-4543SA
Description  Simple Function SERIAL-INTERFACE REAL TIME CLOCK MODULE
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Maker  EPSONTOYOCOM [Epson ToYoCom]
Homepage  http://www.epsontoyocom.co.jp
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RTC-4543SA Datasheet(HTML) 1 Page - Epson ToYoCom

   
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http://www.epsontoyocom.co.jp
Real time clock module
Real time clock module
Real time clock module
Real time clock module
Epson Toyocom
Epson Toyocom
Epson Toyocom
Epson Toyocom
Block diagram
Overview
OSC
FOUT
I / O
CONTROLLER
SHIFT REGISTER
CLK
DATA
CE
WR
32.768 kHz
DIVIDER
OUTPUT
CONTROLLER
FOE
CONTROL
CIRCUIT
FSEL
VOLTAGE
DETECT
CLOCK
AND
CALENDAR
•••• 32.768 kHz frequency output function
•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
•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.
Pin Function
Terminal connection / External dimensions
(Unit:mm)
Signal Name Input / Output
Function
CE
Input
The chip enabled input pin.
At the HIGH level, access becomes possible.
CLK
Input
The shift clock input pin f or serial dat a transfer.
WR
Input
DATA pin input / output switching pin.
DATA
Bi-directional The data input / output pin for serial data transfer.
FOUT
Output
32.768 kHz or 1Hz clock output pin
(C-MOS output).
High impedance at output off.
FOE
Input
The input pin f or the FOUT output control.
FSEL
Input
S elect t he frequency that is output from the
FOUT pin.
VDD
-
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.
VDD
7.
N.C.
5.0
7.4 ± 0.2
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.
VDD
6.
WR
13.
N.C.
7.
FSEL
12.
CLK
8.
CE
11.
DATA
9.
GND
5.4
7.8
± 0.2
2.0 Max.
10.
FOUT
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)
* Refer to application Manual for details.
!
!
!
! Recommended Operating Conditions
Item
Sym bol
Condition
Min.
Typ.
Max.
Unit
Power voltage
VDD
-
2.5
5.0
5.5
V
Clock voltage
VCLK
-
1.4
5.0
5.5
V
Operating
temperature
TOPR
-
-40
+25
+85
°C
!
!
!
! Frequency characteristics
Item
Sym bol
Condition
Rating
Unit
Frequency
tolerance
∆ f / f
Ta = +25 °C
VDD = 5.0 V
5
± 23 ∗
× 10−6
Oscillation
start-up time
tSTA
Ta = +25 °C
VDD = 2.5 V
3 Max.
s
∗ Please ask for tighter tolerance.(Equivalent to 1 minute of monthly deviation )
!
!
!
! Current consumption characteristics
Ta = -40
°C to +85 °C
Item
Sym bol
Condition
Min.
Typ.
Max.
Unit
VDD
= 5 V
1.5
3.0
VDD
= 3 V
1.0
2.0
Current
Consumption
IBK
CE = GND
FOE = GND
FOUT ;output OFF
(Hi-z)
VDD
= 2 V
0.5
1.0
µA
!
!
!
! Supply Voltage Detection Characteristic
Ta = -40 °C to +85 °C
Item
Symbol
Condition
Min.
Typ.
Max.
Unit
Power supply
detection voltage
VDT
VDD pin
1.4
1.7
2.0
V
RTC-4543SA
RTC-4543SB
Simple Function
SERIAL-INTER FACE REA L TIME C LOCK M ODULE
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.
Product Number (Please contact us)
RTC-4543SA : Q41454351000200
RTC-4543SB : Q41454361000200


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