> >> How does the PIC get a clock source when the 'F' series chips don't
have
> >> an internal clock?
> >
> >Since I don't know much about PICs yet, I don't know if I'm wrong or
not but
> >if we're talking about the same thing, running the F series with a
> >crystal/resonator vs without, I've gotten them to run with nothing at
all on
> >the osc pins.
>
> To date, only the 16F627 & '628 in the flash range come with an
internal
> R/C oscillator. If you have any other F parts working without an
oscillator
> then it is only noise or perhaps there is 666 marked on the chip
somewhere.
> ;-)

Hmmm, I have an 877 sitting here running perfectly happy with no
external xtal or resonator.
Now I know what that smell of sulphur is.














..