W921C880 Просмотр технического описания (PDF) - Winbond

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W921C880

4-BIT MICROCONTROLLER

Winbond 

W921E880A/W921C880

* P5.0−P5.3:

Multi-function I/O pins.

Normal function is the same as port P0

Special function

P5IO REG: (ADDRESS = 011H)

(Default data = 0H)

b3

b2

b1

b0

0: Normal I/O P5.0

1: Work as the timer 1 control pin

0: Normal I/O P5.1

1: Work as the timer 2 control pin

0: Normal I/O P5.2

1: Work as the Vref input pin of the comparator

0: Normal I/O P5.3

1: Work as the output pin of D/A converter

(DAOUT)

* P6.0−P6.3 :

Multi-function I/O pins.

Normal function is the same as port P0

Special function

P6IO REG: (ADDRESS = 012H)

(Default data = 0H)

b3

b2

b1

b0

0: Normal I/O P6.0

1: Work as the data output pin of the WCLK pin

(WDATA)

0: Normal I/O P6.1

1: Work as the clock I/O pin of the WDATA pin

(WCLK)

0: Normal I/O P6.2

1: Work as the data input pin of the RCLK pin

(RDATA)

0: Normal I/O P6.3

1: Work as the clock I/O pin of the RDATA pin

(RCLK)

* P8.0−P8.3 :

Four 10 mA drive current pins

Normal I/O pins only.

Normal function is the same as port P0

* P9.0−P9.3 :

Four 15 mA sink current pins

Normal I/O pins only.

Normal function is the same as port P0

* PA.0−PA.3 : Normal I/O pins only.

Normal function is the same as port P0

* PB.0−PB.3 : Normal I/O pins only.

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