Reading And Writing Operation Of Bidirection Port - STC micro STC8A8K64D4 Series Reference Manual

STC8A8K64D4 Series Manual
P7M1 DATA
ORG
LJMP
ORG
MAIN:
MOV
MOV
MOV
MOV
MOV
MOV
MOV
MOV
MOV
JMP
END

9.4.2 Reading and Writing Operation of Bidirection Port

C language code
//Operating frequency for test is 11.0592MHz
#include "reg51.h"
#include "intrins.h"
sfr P0M0
sfr P0M1
sfr P0M1
sfr P0M0
sfr P1M1
sfr P1M0
sfr P2M1
sfr P2M0
sfr P3M1
sfr P3M0
sfr P4M1
sfr P4M0
sfr P5M1
sfr P5M0
sbit P00
void main()
{
P0M0 = 0x00;
P0M1 = 0x00;
P1M0 = 0x00;
P1M1 = 0x00;
P2M0 = 0x00;
P2M1 = 0x00;
P3M0 = 0x00;
P3M1 = 0x00;
P4M0 = 0x00;
P4M1 = 0x00;
P5M0 = 0x00;
0E1H
0000H
MAIN
0100H
SP, #5FH
P0M0,#00H
P0M1,#00H
P1M0,#0FFH
P1M1,#00H
P2M0,#00H
P2M1,#0FFH
P3M0,#0FFH
P3M1,#0FFH
$
= 0x94;
= 0x93;
= 0x93;
= 0x94;
= 0x91;
= 0x92;
= 0x95;
= 0x96;
= 0xb1;
= 0xb2;
= 0xb3;
= 0xb4;
= 0xc9;
= 0xca;
= P0^0;
;Set P0.0 ~ P0.7 as bidirectional port mode
;Set P1.0 ~ P1.7 as push-pull output mode
;Set P2.0 ~ P2.7 as high impedance input mode
;Set P3.0 ~ P3.7 as open-drain mode
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