M38747MAF データシートの表示（PDF） - Mitsumi

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M38747MAF

SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER

Mitsumi 

MITSUBISHI MICROCOMPUTERS

3874 Group

SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER

(1) Ports P0,P1,P3,P73,P74,P81

Direction register

Data bus

Port latch

(2) Port P2

Direction register

Data bus

Port latch

P2 pull-up

Key input interrupt input

(3) Port P40

Port XC switch bit

Direction register

Data bus

Port latch

(4) Port P41

Port XC switch bit

Direction register

Data bus

Port latch

Oscillator

Port P41

Port XC switch bit

Sub-clock generating circuit input

(5) Ports P42,P43,P51,P52,P53

Direction register

Data bus

Port latch

(6) Port P44

Serial I/O1 enable bit

Receive enable bit

Direction register

Data bus

Port latch

INT1–INT5 interrupt input

Fig. 12 Port block diagram (1)

Serial I/O1 input

17

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