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參數資料
型號: W921C880
廠商: WINBOND ELECTRONICS CORP
元件分類: 微控制器/微處理器
英文描述: 4-Bit Microcontroller(4位微控制器)
中文描述: 4-BIT, MROM, 4 MHz, MICROCONTROLLER, PQFP80
封裝: QFP-80
文件頁數: 7/57頁
文件大小: 372K
代理商: W921C880
W921E880A/W921C880
Publication Release Date: September 1998
- 7 -
Revision A2
4. PIN DESCRIPTION
SYMBOL
I/O
FUNCTION
OSCI
I
Main-oscillator input pin with internal cap.
OSCO
O
Main-oscillator output pin.
PA.0
PA.3
PB.0
PB.3
PC.0
PC.3
PD.0
PD.3
PE.0
PE.3
PF.0
PF.3
P0.0
P0.3
P1.0
P1.3
P2.0
P2.3
P3.0/ANI0
|
P3.3/ANI3
*
I/O
I/O port A.
*
I/O
I/O port B.
*
I/O
I/O port C. PC.3 can be as 32.768 KHz output buffer.
*
I/O
I/O port D.
I/O
I/O port E.
I/O
I/O port F.
I/O
I/O with large drive current pin.
I/O
I/O with large drive current pin.
>
I/O
I/O with large drive current pin.
I/O
I/O port 3 or Analog input pins (ANI0
ANI3).
P4.0
*
I/O
I/O port 4.0 or the port P4.0 interrupt input pin.
P4.1
*
I/O
I/O port 4.1 or the port P4.1 interrupt input pin.
P4.2
*
I/O
I/O port 4.2 or the port P4.2 interrupt input pin.
P4.3/INT0
*
I/O
I/O port 4.3 or the INT0 input pin.
P5.0/TM1
I/O
I/O port 5.0 or the control pin of the TIMER 1.
P5.1/TM2
I/O
I/O port 5.1 or the control pin of the TIMER 2.
P5.2/VREF
I/O
I/O port 5.2 or the Vref input pin of the comparator.
P5.3/DAOUT
I/O
I/O port 5.3 or the output pin of the 8bit D/A.
P6.0/WDATA
*
I/O
I/O port 6.0 or the data output pin of the serial interface.
P6.1/WCLK
*
I/O
I/O port 6.1 or the clock I/O pin of WDATA.
P6.2/RDATA
*
I/O
I/O port 6.2 or the data input pin of the serial interface.
P6.3/RCLK
*
I/O
I/O port 6.3 or the clock I/O pin of RDATA.
P7.0
P7.3
P8.0
P8.3
P9.0
P9.3
>
I/O
I/O with large sink current pin.
I/O
I/O with large drive current pin.
>
I/O
I/O with large drive current pin.
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