pic18f252 PWM duty update : Help

[iw2fvo]

Henrik,
thanks for the interest.
I have read the data sheet again but it is still not clear to me: could you please spend few more words for me ?
( Will I have 10 bit resolution if PR2 is set to 256 since 256*4 =1023 : is this assumption correct ? ).
Thanks for your time
bst rgds,
Ambrogio

[HenrikOlsson]

Hello,
Well, PR2 is 8 bits so you can only really set it to 255 but otherwise yes you're correct.
This will of course also change the frequency - there's always a tradeoff between frequency and resolution. If you need to "hit" 10kHz exactly then you'll have to live with ~9.5 bits of resolution or change your oscillator frequency to one that better matches your needs. Faster isn't always better.

/Henrik.

[iw2fvo]

Thanks Henrik: it is clear to me now.
Best regards,
Ambrogio
IW2FVO
North Italy