16Bit 125KHz PWM with PIC12F1572

[HenrikOlsson]

If the dutycycle is supposed to be fixed at 50% I don't see how it matters if you have 5, 6, 7 or even 16 bits of resolution.

[Ioannis]

A major limitation is that the chip does not support use of XTAL as a clock source. User needs to select either internal oscillator or external clock source, something that Jay is not fond of.

I think crystal based clock is a must since the internal clock is specified at 2% and at 125Khz this means +/- 2.5KHz deviation.

Ioannis

[mpgmike]

Just another thought, the PSMC Peripheral found on some PIC16F17XX parts (and probably others) should at least clock from XTAL. It's a 16-bit PWM type control strategy.