I've got a problem using the PWM module of my PIC18Fxx2 to drive a R/C Servo. My PIC runs at 20MHz which I cannot change. The lowest frequency, that I can get is then 1.22kHz (using x16 prescaler and PR2=0xFF) which is too fast for the Servo. Is there some way of using the postscaler to get down the frequency? Trying to change the postscaler apparently made no difference. Though I read in the datasheet of the PIC that "The postscaler could be used to have a servo update rate at a different frequency than the PWM output."
Hope you can help me in this matter! Thanks, Stefan