STC micro STC8A8K64D4 Series - Example Routines; Port Mode Setting

STC8A8K64D4 Series Manual
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9.4 Example Routines
9.4.1 Port Mode Setting
C language code
//Operating frequency for test is 11.0592MHz
#include "reg51.h"
#include "intrins.h"
sfr P0M0 = 0x94;
sfr P0M1 = 0x93;
sfr P1M0 = 0x92;
sfr P1M1 = 0x91;
sfr P2M0 = 0x96;
sfr P2M1 = 0x95;
sfr P3M0 = 0xb2;
sfr P3M1 = 0xb1;
sfr P4M0 = 0xb4;
sfr P4M1 = 0xb3;
sfr P5M0 = 0xca;
sfr P5M1 = 0xc9;
sfr P6M0 = 0xcc;
sfr P6M1 = 0xcb;
sfr P7M0 = 0xe2;
sfr P7M1 = 0xe1;
void main()
{
P0M0 = 0x00; //Set P0.0 ~ P0.7 as bidirectional port mode
P0M1 = 0x00;
P1M0 = 0xff; //Set P1.0 ~ P1.7 as push-pull output mode
P1M1 = 0x00;
P2M0 = 0x00; //Set P2.0 ~ P2.7 as high impedance input mode
P2M1 = 0xff;
P3M0 = 0xff; //Set P3.0 ~ P3.7 as open-drain mode
P3M1 = 0xff;
while (1);
}
Assembly code
;Operating frequency for test is 11.0592MHz
P0M0 DATA 094H
P0M1 DATA 093H
P1M0 DATA 092H
P1M1 DATA 091H
P2M0 DATA 096H
P2M1 DATA 095H
P3M0 DATA 0B2H
P3M1 DATA 0B1H
P4M0 DATA 0B4H
P4M1 DATA 0B3H
P5M0 DATA 0CAH
P5M1 DATA 0C9H
P6M0 DATA 0CCH
P6M1 DATA 0CBH
P7M0 DATA 0E2H