M37640E8FP 데이터 시트보기 (PDF) - Mitsumi

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M37640E8FP

SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER

Mitsumi 

Ver 1.4

MITSUBISHI MICROCOMPUTERS

7640 Group

SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER

Port P84

This pin is multiplexed with the UART1 TxD signal.

When UART1 is in transmit mode, the pin acts as the

TxD output signal.

Port P85

This pin is multiplexed with the UART1 RxD signal.

When UART1 is in receive mode, the pin acts as the

RxD input signal.

Port P86

This pin is multiplexed with the UART1 CTS signal.

When bit 5 of the UART1 control register (U1CON) is

a “1”, the port acts as the CTS input signal.

Port P87

This pin is multiplexed with the UART1 RTS signal.

When bit 6 of the UART1 control register (U1CON) is

a “1”, the port acts as the RTS output signal.

Port P84

UART1 Transmit Control Bit

Direction Register

Data Bus

Port Latch

UART1 TxD Output

Port P85

UART1 receive control Bit

Direction Register

Data Bus

Port Latch

UART1 RxD Input

Fig. 1.21. Port P84, P85, P86 and P87 Block Diagram

Port P86

UART1 CTS Enable Bit

Direction Register

Data Bus

Port Latch

Port P87

UART1 RTS Enable Bit

Direction Register

Data Bus

Port Latch

UART1 RTS Output

UART1 CTS input

24

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