STC micro STC8A8K64D4 Series - Page 470

STC8A8K64D4 Series Manual
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}
void IapProgram(int addr, char dat)
{
IAP_CONTR = 0x80; //Enable IAP
IAP_TPS = 12; //Set the erasing wait parameter of 12MHz
IAP_CMD = 2; //Set IAP writing command
IAP_ADDRL = addr; //Set IAP low address
IAP_ADDRH = addr >> 8; //Set IAP high address
IAP_DATA = dat; //Write IAP data
IAP_TRIG = 0x5a; //Write trigger command (0x5a)
IAP_TRIG = 0xa5; //Write trigger command (0xa5)
_nop_();
IapIdle(); //Disable IAP function
}
void IapErase(int addr)
{
IAP_CONTR = 0x80; //Enable IAP
IAP_TPS = 12; //Set the erasing wait parameter of 12MHz
IAP_CMD = 3; //Set IAP erasing command
IAP_ADDRL = addr; //Set IAP low address
IAP_ADDRH = addr >> 8; //Set IAP high address
IAP_TRIG = 0x5a; //Write trigger command (0x5a)
IAP_TRIG = 0xa5; //Write trigger command (0xa5)
_nop_(); //
IapIdle(); //Disable IAP function
}
void main()
{
P0M0 = 0x00;
P0M1 = 0x00;
P1M0 = 0x00;
P1M1 = 0x00;
P2M0 = 0x00;
P2M1 = 0x00;
P3M0 = 0x00;
P3M1 = 0x00;
P4M0 = 0x00;
P4M1 = 0x00;
P5M0 = 0x00;
P5M1 = 0x00;
IapErase(0x0400);
P0 = IapRead(0x0400); //P0=0xff
IapProgram(0x0400, 0x12);
P1 = IapRead(0x0400); //P1=0x12
while (1);
}
Assembly code
;Operating frequency for test is 11.0592MHz
IAP_DATA DATA 0C2H
IAP_ADDRH DATA 0C3H