7641 데이터 시트보기 (PDF) - Mitsumi

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7641

SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER

Mitsumi 

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(7) Port P51

XCOUT oscillation drive disable bit

Sub-clock (XCIN-XCOUT) stop bit

TOUT output control bit

Direction

register

Data bus

Port latch

Timer 1, 2 output

XCOUT output

(9) Port P53

IBF0 output enable bit

Direction

register

Data bus

Port latch

IBF0 output

(11) Port P6

Write to Master CPU bus interface

S0

S1

Read from Master CPU bus interface

Direction

register

Data bus

Port latch

DBBOUT0

A0

DBBS0

DBBOUT1

A1

DBBS1

DBBIN0

DBBIN1

Fig. 13 Port block diagram (2)

MITSUBISHI MICROCOMPUTERS

7641 Group

SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER

(8) Port P52

OBF0 output enable bit

Direction

register

Data bus

Port latch

OBF0 output

(10) Ports P54 to P57

Master CPU bus

interface enable bit

Direction

register

Data bus

Port latch

Master CPU bus

functions input ✻

(12) Port P70

USB SOF port select bit

Direction

register

Data bus

Port latch

S0

Read from Master CPU bus

interface

S1

S0

Write to Master CPU

bus interface

S1

SOF signal

✻: Ports P54 to P57 functions

Pin name

P54

P55

P56

P57

Functions

S0

A0

R(E)

W(R/W)

17

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