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參數資料
型號: W741C20X
廠商: WINBOND ELECTRONICS CORP
英文描述: 4-BIT MICROCONTROLLER
中文描述: 4位微控制器
文件頁數: 57/84頁
文件大小: 486K
代理商: W741C20X
Preliminary W741C20X
Publication Release Date: March 1998
- 57 -
Revision A3
Instruction Set Table 2, continued
MOV PM0, #I
Set/Reset Port Mode 0 register
Machine Code:
Machine Cycle:
Operation:
Description:
0
1
0
1
0
0
1
1
0
0
0
0
I2
I1
I0
I3
1
Set/Reset Port mode 0 register
I0 = 0: RA port is CMOS type; I0 = 1: RA port is NMOS type.
I1 = 0: RB port is CMOS type; I1 = 1: RB port is NMOS type.
I2 = 0: RC port pull-high resistor is disabled;
I2 = 1: RC port pull-high resistor is enabled.
I3 = 0: RD port pull-high resistor is disabled;
I3 = 1: RD port pull-high resistor is enabled.
MOV PM1, #I
RA port independent Input/Output control
Machine Code:
Machine Cycle:
Operation:
Description:
0
1
0
1
0
1
1
1
0
0
0
0
I3
I2
I1
I0
1
RA port 4 pins input/output control is independent.
I0 = 0: RA.0 is output pin; I0 = 1: RA.0 is input pin.
I1 = 0: RA.1 is output pin; I1 = 1: RA.1 is input pin.
I2 = 0: RA.2 is output pin; I2 = 1: RA.2 is input pin.
I3 = 0: RA.3 is output pin; I3 = 1: RA.3 is input pin.
Default condition RA port is input mode (PM = 1111B).
MOV PM2, #I
RB port independent Input/Output control
Machine Code:
Machine Cycle:
Operation:
Description:
0
1
0
1
0
1
1
1
1
0
0
0
I3
I2
I1
I0
1
RB port 4 pins input/output control is independent.
I0 = 0: RB.0 is output pin; I0 = 1: RB.0 is input pin.
I1 = 0: RB.1 is output pin; I1 = 1: RB.1 is input pin.
I2 = 0: RB.2 is output pin; I2 = 1: RB.2 is input pin.
I3 = 0: RB.3 is output pin; I3 = 1: RB.3 is input pin.
Default condition RB port is input mode (PM2 = 1111B).
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