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3.21 8-bit GPIO Function
The HS-2621 offers one 8-bit input/output port by parallel port.
z
JP4: 8-bit GPIO
PIN Description PIN Description
1
9
10
2
1
VCC
2
GND
3
GPIO0
4
GPIO4
5
GPIO1
6
GPIO5
7
GPIO2
8
GPIO6
9
GPIO3
10
GPIO7
W83627EHG
Digital I/O Assembly sample code
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Extended function mode
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MOV DX,2EH
MOV AL,87H
OUT DX,AL
OUT DX,AL
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Configure logical device 7
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MOV DX,2EH
MOV AL,07H
OUT DX,AL
MOV DX,2FH
MOV AL,07H
OUT DX,AL
MOV DX,2EH
MOV AL,30H ; Enable GPIO1
OUT DX,AL
MOV DX,2FH
MOV AL,01H
OUT DX,AL
Summary of Contents for HS-2621
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