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参数资料
型号： RTC-4543SB:A3:ROHS
厂商： EPSON TOYOCOM CORP
元件分类： 时钟/数据恢复及定时提取
英文描述： REAL TIME CLOCK, PDSO18
封装： ROHS COMPLIANT, SOP-18
文件页数： 1/2页
文件大小： 575K
Actual size
http://www.epsontoyocom.co.jp
Real time clock module
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 for serial data 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 for the FOUT output control.
FSEL
Input
Select the 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.
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.
VDD
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. This will not affect any quality, reliability or electrical spec.
Specifications (characteristics)
* Refer to application Manual for details.
Recommended Operating Conditions
Item
Symbol
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
Symbol
Condition
Rating
Unit
Frequency
tolerance
f / f
Ta = +25 °C
VDD = 5.0 V
5
± 23
× 106
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
Symbol
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
A
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-INTERFACE REAL TIME CLOCK 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.
Product Number (Please contact us)
RTC-4543SA : Q41454351000200
RTC-4543SB : Q41454361000200
相关PDF资料
PDF描述
RTC-4543SA:A:ROHS REAL TIME CLOCK, PDSO14
RTC-4543SAB REAL TIME CLOCK, PDSO14
RTC-4543SB 0 TIMER(S), REAL TIME CLOCK, PDSO18
RTC-4543SA 0 TIMER(S), REAL TIME CLOCK, PDSO14
RTC-4553AA-0 0 TIMER(S), REAL TIME CLOCK, PDSO14
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