> I am in the process of
> getting my first test bed set up (for an 18F452) and need to order a 10
> Mhz crystal.  They seem to come in two flavors:  serial, and 20pF.   My
> understanding is that the 20pF is the preferred one.

Yes, if you want to get the rated frequency.

> If that is true,
> is it still necessary to use the two caps to ground from the leads???

Yes.


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