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M37641M8FP

SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER

Mitsumi 

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MITSUBISHI MICROCOMPUTERS

7641 Group

SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER

(19) Port P82

(Serial I/O) SRXD input enable bit

(UART2) CTS function enable bit

Direction

register

Data bus

PPoorrtt llaattcchh

(UART2) CTS function enable bit

(UART2) CTS2 input

(Serial I/O) SRXD input

(21) Port P84

(UART1) Transmit enable bit

Direction

register

Data bus

Port latch

(20) Port P83

Transmit completed signal

Serial I/O port select bit

STXD output channel

control bit

(UART2) RTS function enable bit

Direction

register

Data bus

Port latch

(Serial I/O) STXD output

(UART2) RTS2 input

(22) Port P85

(UART1) Receive enable bit

Direction

register

Data bus

Port latch

(UART1) UTXD1 output

(23) Port P86

(UART1) CTS function enable bit

Direction

register

Data bus

Port latch

(UART1) CTS1 input

Fig. 15 Port block diagram (4)

(UART1) URXD1 input

(24) Port P87

(UART1) RTS function enable bit

Direction

register

Data bus

Port latch

(UART1) RTS1 output

19

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