>I've a PCB layout that will benefit greatly if I could (reliably) hook the
>watch-crytal's capacitors to +V instead of Gnd.
>
>If there's a sufficiently large cap. across the battery, this should be
>equivalent, I think.

This works perfectly with the 3 legged 4 MHz resonators that I use.  You
NEED a bypass cap next to the PIC anyways (I use 1uf tantalum) which
guarantees that VCC=GND at the crystal / resonator frequency.  Only caveat
is leakage resistance of the capacitors (NPO ceramic caps should be fine).

Dwayne Reid   <dwayner@planet.eon.net>
Trinity Electronics Systems Ltd    Edmonton, Alberta, CANADA
(403) 489-3199 voice     (403) 487-6397 fax