M37640E8FP 데이터 시트보기 (PDF) - Mitsumi

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M37640E8FP

SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER

Mitsumi 

Ver 1.4

1.14.1.5 Port P6

Port P6 is an 8-bit general purpose I/O port that can

be configured to access special second functions.

The port acts as the data bus interface for the bus in-

terface control block when DBBC06 is “1”. The port

can be set up in any configuration in all three proces-

sor modes.

MITSUBISHI MICROCOMPUTERS

7640 Group

SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER

Port P6

MBI Write

S0

S1

MBI Read

Direction Register

Data Bus

Port Latch

Output Buffer 0

A0

Status Register 0

Output Buffer 1

A1

Status Register 1

Fig. 1.18. Port P6 Block Diagram

Input Buffer 0

Input Buffer 1

S0

MBI Read

S1

MBI Read

S0

MBI Write

S1

MBI Write

21

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