Sharp RG-F551G Serviceanleitung Seite 17

-RG-F551G/553G
RG-F552E/554E
uPD1708
-_ ft timt CPU CLOCK
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| ae al | Reference divider
B8Hz ,
eS Selector.
} OOHz
Abit
Swallow
Counter
7 15
5ms
SYSTEM
Dane | RESET
CE (3) Shot
Power on treset
Jnstruction
Decoder
Address Decoder
Program Counter
JMP
Stack register
(0 (os 63 QNER23E4
GND VoD NC VoD Peheen lee
Figure 23 EQUIVALENT CIRCUIT (BLOCK DIAGRAM) OF IC
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