C8051F850-B-GM Datasheet, PDF (149/290 Pages) Silicon Laboratories – Low-Cost 8-bit MCU Family with up to 8 kB of Flash

C8051F85x/86x
clearing the module’s ECOM bit to 0. This will disable the comparison, and prevent the match edge from occuring.
Note that although the PCA0CPn compare register determines the duty cycle, it is not always appropriate for
firmware to update this register directly. See the sections on 8 to 11-bit and 16-bit PWM mode for additional details
on adjusting duty cycle in the various modes.
Duty Cycle
=
_---2---^N_{-----–----P----C---A-----0---C----P---n----}
2^N
Equation 20.2. N-bit Edge-Aligned PWM Duty Cycle With CEXnPOL = 0 (N = PWM resolution)
Duty Cycle
=
P----C----A----0---C----P----n-
2^N
Equation 20.3. N-bit Edge-Aligned PWM Duty Cycle With CEXnPOL = 0 (N = PWM resolution)
154
Preliminary Rev 0.6