STC micro STC8A8K64D4 Series - Page 553

STC8A8K64D4 Series Manual
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sfr P5M1 = 0xc9;
sfr P5M0 = 0xca;
unsigned int value;
void PCA_Isr() interrupt 7
{
CCF0 = 0;
CCAP0L = value;
CCAP0H = value >> 8;
value += T38K4HZ;
}
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;
CCON = 0x00;
CMOD = 0x08; //PCA clock is the system clock
CL = 0x00;
CH = 0x00;
CCAPM0 = 0x4d; //PCA module 0 is 16-bit timer mode, and enable pulse output
value = T38K4HZ;
CCAP0L = value;
CCAP0H = value >> 8;
value += T38K4HZ;
CR = 1; //Start PCA timer
EA = 1;
while (1);
}
Assembly code
;Operating frequency for test is 11.0592MHz
CCON DATA 0D8H
CF BIT CCON.7
CR BIT CCON.6
CCF2 BIT CCON.2
CCF1 BIT CCON.1
CCF0 BIT CCON.0
CMOD DATA 0D9H
CL DATA 0E9H
CH DATA 0F9H
CCAPM0 DATA 0DAH
CCAP0L DATA 0EAH