P89C51RD2 PWM (Resolved)

[CMOS]

p89c51rd2 pwm

Hi,
Can anyone show me how to initialize PWM in P89C51RD2. How to change duty-cycle and what will be the frequency of generated PWM wave?

 

[CMOS]

p89c51rd2 pwm

Ok I found it in Intel's 8XC51FA/FB/FC PCA Cookbook.

INIT_PWM:
MOV CMOD, #02H ; Clock input 4 250 nsec at 16 MHz
MOV CL, #00H ; Frequency of output 4 15.6 KHz
MOV CH, #00H
MOV CCAPM0, #42H ; Module 0 in PWM mode
MOV CCAP0L, #00H
MOV CCAP0H, #128D ; 50 percent duty cycle
SETB CR ; Turn on PCA timer