STC micro STC8A8K64D4 Series - Reading and Writing Operation of Bidirection Port

STC8A8K64D4 Series Manual
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P7M1 DATA 0E1H
ORG 0000H
LJMP MAIN
ORG 0100H
MAIN:
MOV SP, #5FH
MOV P0M0,#00H ;Set P0.0 ~ P0.7 as bidirectional port mode
MOV P0M1,#00H
MOV P1M0,#0FFH ;Set P1.0 ~ P1.7 as push-pull output mode
MOV P1M1,#00H
MOV P2M0,#00H ;Set P2.0 ~ P2.7 as high impedance input mode
MOV P2M1,#0FFH
MOV P3M0,#0FFH ;Set P3.0 ~ P3.7 as open-drain mode
MOV P3M1,#0FFH
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 = 0x94;
sfr P0M1 = 0x93;
sfr P0M1 = 0x93;
sfr P0M0 = 0x94;
sfr P1M1 = 0x91;
sfr P1M0 = 0x92;
sfr P2M1 = 0x95;
sfr P2M0 = 0x96;
sfr P3M1 = 0xb1;
sfr P3M0 = 0xb2;
sfr P4M1 = 0xb3;
sfr P4M0 = 0xb4;
sfr P5M1 = 0xc9;
sfr P5M0 = 0xca;
sbit P00 = P0^0;
void main()
{
P0M0 = 0x00;
P0M1 = 0x00;
P1M0 = 0x00;
P1M1 = 0x00;
P2M0 = 0x00;
P2M1 = 0x00;
P3M0 = 0x00;
P3M1 = 0x00;
P4M0 = 0x00;
P4M1 = 0x00;
P5M0 = 0x00;