W77E516 查看數據表（PDF） - Winbond

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W77E516

8-BIT MICROCONTROLLER

Winbond 

Preliminary W77E516

Port 1

Bit:

7

6

5

4

3

2

1

0

P1.7 P1.6 P1.5 P1.4 P1.3 P1.2 P1.1 P1.0

Mnemonic: P1

Address: 90h

P1.7 − 0: General purpose I/O port. Most instructions will read the port pins in case of a port read

access, however in case of read-modify-write instructions, the port latch is read. Some

pins also have alternate input or output functions. This alternate functions are described

below:

P1.0: T2

P1.1: T2EX

P1.2: RXD1

P1.3: TXD1

P1.4: INT2

P1.5: INT3

P1.6: INT4

P1.7: INT5

External I/O for Timer/Counter 2

Timer/Counter 2 Capture/Reload Trigger

Serial Port 1 Receive

Serial Port 1 Transmit

External Interrupt 2

External Interrupt 3

External Interrupt 4

External Interrupt 5

External Interrupt Flag

Bit:

7

6

5

4

3

2

1

0

IE5

IE4

IE3

IE2

-

-

-

-

Mnemonic: EXIF

Address: 91h

IE5: External Interrupt 5 flag. Set by hardware when a falling edge is detected on INT5 .

IE4: External Interrupt 4 flag. Set by hardware when a rising edge is detected on INT4.

IE3: External Interrupt 3 flag. Set by hardware when a falling edge is detected on INT3 .

IE2: External Interrupt 2 flag. Set by hardware when a rising edge is detected on INT2.

Port 4 Control Register A

Bit:

7

P41M1

6

P41M0

5

P41C1

4

P41C0

3

P40M1

2

P40M0

1

P40C1

0

P40C0

Mnemonic: P4CONA

Address: 92h

Port 4 Control Register B

Bit:

7

P43M1

6

P43M0

5

P43C1

4

P43C0

3

P42M1

2

P42M0

1

P42C1

0

P42C0

Mnemonic: P4CONB

Address: 93h

- 17 -

Publication Release Date: August 16, 2002

Revision A1

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