W921C880 Просмотр технического описания (PDF) - Winbond

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Компоненты Описание

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W921C880

4-BIT MICROCONTROLLER

Winbond 

W921E880A/W921C880

4. PIN DESCRIPTION

SYMBOL

I/O

OSCI

I

OSCO

O

PA.0−PA.3

*I/O

PB.0−PB.3

*I/O

PC.0−PC.3

*I/O

PD.0−PD.3

*I/O

PE.0−PE.3

I/O

PF.0−PF.3

I/O

P0.0−P0.3

I/O

P1.0−P1.3

I/O

P2.0−P2.3

>I/O

P3.0/ANI0

I/O

|

P3.3/ANI3

P4.0

*I/O

P4.1

*I/O

P4.2

*I/O

P4.3/INT0

*I/O

P5.0/TM1

I/O

P5.1/TM2

I/O

P5.2/VREF

I/O

P5.3/DAOUT

I/O

P6.0/WDATA

*I/O

P6.1/WCLK

*I/O

P6.2/RDATA

*I/O

P6.3/RCLK

*I/O

P7.0−P7.3

>I/O

P8.0−P8.3

I/O

P9.0−P9.3

>I/O

FUNCTION

Main-oscillator input pin with internal cap.

Main-oscillator output pin.

I/O port A.

I/O port B.

I/O port C. PC.3 can be as 32.768 KHz output buffer.

I/O port D.

I/O port E.

I/O port F.

I/O with large drive current pin.

I/O with large drive current pin.

I/O with large sink current pin.

I/O port 3 or Analog input pins (ANI0−ANI3).

I/O port 4.0 or the port P4.0 interrupt input pin.

I/O port 4.1 or the port P4.1 interrupt input pin.

I/O port 4.2 or the port P4.2 interrupt input pin.

I/O port 4.3 or the INT0 input pin.

I/O port 5.0 or the control pin of the TIMER 1.

I/O port 5.1 or the control pin of the TIMER 2.

I/O port 5.2 or the Vref input pin of the comparator.

I/O port 5.3 or the output pin of the 8bit D/A.

I/O port 6.0 or the data output pin of the serial interface.

I/O port 6.1 or the clock I/O pin of WDATA.

I/O port 6.2 or the data input pin of the serial interface.

I/O port 6.3 or the clock I/O pin of RDATA.

I/O with large sink current pin.

I/O with large drive current pin.

I/O with large sink current pin.

Publication Release Date: July 1999

-7-

Revision A3

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