Epson RTC-4543SB Manuel D’Utilisation

RTC - 4543 SA/SB

 

 

 

Page - 9 

MQ - 252 - 03

 

 

8. Examples of External Circuits 

 

•

 

Example 1.    When used as an RTC + clock source 

RTC 4543

VDD

CE

GND

0.1 

µ

F

   

FOUT

FSEL

WR

DATA

CLK

FOE

VDD

   

VDD
   

Power supply
Detection circuit

Power supply
Switching circuit

*1

*2

 

*1: FOUT output frequency setting (High: 1 Hz; low: 32.768 kHz) 
*2: Prohibits FOUT output during back up, reducing current consumption. 

 

 

•

 

Example 2.    When used as a clock source (oscillator) 

 

RTC-4543 

V

DD

 

CE 

GND 

0.1 

µ

F 

FOUT 

FSEL 

WR 

DATA 

CLK 

FOE 

V

DD

 

V

DD

 

V

DD

 

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1