CCP vs power control PWM

[Darrel Taylor]

Which one is better ? Why ?

The POWER CONTROL PWM MODULE can have ... "Up to 14-bit resolution, depending upon the PWM period."

That makes it "better" to me.
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[Bruce]

What are your requirements for the PWM signal?

Will it be used for motor control or something else?

[luminas]

Thanks guys

I am experimenting with both PICs , both system run well as expected

Beside those hardware specific features, is the CPU utilization lower with power control pwm compared to ccp pwm ?

Is there something like " windows task manager " for PIC to see the CPU load ?


Bruce:
It is a motor control with 20 kHz pwm freq.

[Bruce]

PWM is hardware based so once it's configured & enabled it doesn't require CPU overhead
to continue. Only when you make changes to duty-cycle or frequency.

For motor control I would definitely prefer the 18F2431 with additional built-in safety
options like fault inputs and dead-band. The 16F737 only has standard CCPx type PWM
outputs. The 2431 would be a lot better choice in my opinion.

[luminas]

Thanks Bruce, I will go with 2431. Have a nice day !