STC micro STC8A8K64D4 Series Reference Manual page 543

STC8A8K64D4 Series Manual
P4M0 = 0x00;
P4M1 = 0x00;
P5M0 = 0x00;
P5M1 = 0x00;
CCON = 0x00;
CMOD = 0x08;
CL = 0x00;
CH = 0x00;
// ―― 6 bit PWM ――
CCAPM0 = 0x42;
PCA_PWM0 = 0x80;
CCAP0L = 0x20;
CCAP0H = 0x20;
// ―― 7 bit PWM ――
CCAPM1 = 0x42;
PCA_PWM1 = 0x40;
CCAP1L = 0x20;
CCAP1H = 0x20;
―― ――
// 8 bit PWM
// CCAPM2 = 0x42;
// PCA_PWM2 = 0x00;
// CCAP2L = 0x20;
// CCAP2H = 0x20;
// ―― 10 bit PWM ――
CCAPM2 = 0x42;
PCA_PWM2 = 0x00;
CCAP2L = 0x20;
CCAP2H = 0x20;
CR = 1;
while (1);
}
Assembly code
;Operating frequency for test is 11.0592MHz
CCON DATA
CF BIT
CR BIT
CCF2 BIT
CCF1 BIT
CCF0 BIT
CMOD DATA
CL DATA
CH DATA
CCAPM0 DATA
CCAP0L DATA
CCAP0H DATA
PCA_PWM0 DATA
CCAPM1 DATA
CCAP1L DATA
CCAP1H DATA
PCA_PWM1 DATA
CCAPM2 DATA
CCAP2L DATA
CCAP2H DATA
0D8H
CCON.7
CCON.6
CCON.2
CCON.1
CCON.0
0D9H
0E9H
0F9H
0DAH
0EAH
0FAH
0F2H
0DBH
0EBH
0FBH
0F3H
0DCH
0ECH
0FCH
//PCA clock is the system clock
//PCA 0 is in PWM mode
//PCA 0 outputs 6-bit PWM
//PWM duty cycle is 50%[(40H-20H)/40H]
//PCA 1 is in PWM mode
//PCA 1 outputs 7-bit PWM
//PWM duty cycle is 75%[(80H-20H)/80H]
//PCA 2 is in PWM mode
//PCA 2 outputs 8-bit PWM
//PWM duty cycle is 87.5%[(100H-20H)/100H]
//PCA 2 is in PWM mode
//PCA 2 outputs 10-bit PWM
// PWM duty cycle is 96.875%[(400H-20H)/400H]
//Start PCA timer
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