> I've never had reliable PIC operation using 20M ceramic resonators. The
> cutoff frequency for
> reliable operation is 16M. Just my experience. Above 16M I always use
> crystals and 22pF caps.

I use a 20 MHz resonator on my Wisp648 (and its predecessors). I have=20
never seen a problem.

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Wouter van Ooijen

-- -------------------------------------------
Van Ooijen Technische Informatica: www.voti.nl
consultancy, development, PICmicro products
docent Hogeschool van Utrecht: www.voti.nl/hvu

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