7641 查看數據表（PDF） - Mitsumi

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7641

SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER

Mitsumi 

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MITSUBISHI MICROCOMPUTERS

7641 Group

SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER

Table 2 Pin description (2)

Pin

P60/DQ0–

P67/DQ7

Name

I/O port P6

P70/SOF,

P71/HOLD,

P72/S1,

P73/IBF1/

HLDA,

P74/OBF1

P80/UTXD2/

SRDY,

P81/URXD2/

SCLK,

P82/CTS2/

SRXD,

P83/RTS2/

STXD,

P84/UTXD1,

P85/URXD1,

P86/CTS1,

P87/RTS1

I/O port P7

I/O port P8

Function

• 8-bit I/O port.

• CMOS compatible input level.

• CMOS 3-state output structure.

• I/O direction register allows each pin to be individually

programmed as either input or output.

• When enabling the bus interface function, CMOS or TTL

input level can be selected as its input.

• 5-bit I/O port.

• CMOS compatible input level.

• CMOS 3-state output structure.

• I/O direction register allows each pin to be individually

programmed as either input or output.

Function except a port function

• Master CPU bus interface pin

• USB function pin

• Master CPU bus interface pin

• 8-bit I/O port.

• CMOS compatible input level.

• CMOS 3-state output structure.

• I/O direction register allows each pin to be individually pro-

grammed as either input or output.

• Serial I/O pin

• UART2 pin

• UART1 pin

Remarks

•DMAOUT pin

If externally detecting the timing of DMA execution, use the signal from this pin. It is “H” level during DMA transferring. This signal is valid in the memory expansion

and microprocessor modes.

•SYNCOUT pin

If externally detecting the timing of OP code fetch, use the signal from this pin. This signal is valid in the memory expansion and microprocessor modes.

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