On Sun, Jan 14, 2007 at 12:01:37PM -0000, peter green wrote:
> > I plan to use the internal RC oscillator at a low speed (31.25 kHz).
> if you are running the pic off that then you will not be able to use the pics clock as a timebase.
> 
> your best bet is probablly to clock the pic off a 32768HZ watch crystal.

Having a project like this, my sunrise/sunset outdoor light controller, I'd
be very careful to advise such a solution. I used the 32kHz watch crystal to
clock timer1, and the project drifts. Those crystals are extremely temp
sensitive.

RTC chips with internal crystals are temp compensated. It does make a 
difference.

BAJ
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