On Tue, 28 Nov 1995, Varady Peter wrote:

> I'd like to operate a normal 4MHz, PIC16C84 with an 32.768kHz crystal
> (the same one that used in clocks), but I had problems.
> I have used of course LP config mode, and 100pF capacitors.
> When I measured on OSC1 and OSC2 pins the signal shape and freq looked OK.
> (OSC1 fast sinusoid, and OSC2 distorted square, just as at XT mode).
> But all other operation was not adequate (no any sign of operation). What
> can be the trouble??? Please help!
> Thanks. Peter
> email: vaca@balu.sch.bme.hu
>

Did the chip work when the scope probe was held against the pins?  If so
then you will probably need more capacitance (we had the same problem
with this frequency of crystal).

Ben Heller (B.Heller@Sheffield.AC.UK)