I just got my hands on an PIC18F252 to fiddle around with, and I want to
clock it at 40mhz.  On the PIC16's I am used to just throwing a 20mhz
ceramic resonator w/caps on there, and being done with it....1
component...nice and simple.  I couldn't find a 40mhz resonator to make this
as simple an operation.

So, what do most people do for a 40mhz, reliable, simple clock for these?

The data sheet seems to suggest using a HS/PLL circuit to 4xstep-up a 10mhz
crystal.  This seems like overkill, and alot of additional
circuitry...although would be nice without lots of EMI to mess things up.  I
have a couple of 20mhz crystals laying around I could double....but, keeping
it simpler is sounding good to me.  I really don't need the whole selectable
clocking feature that using the PLL really buys.

I am still quite the PIC newbie....so any suggestions would be greatly
appreciated.

Thanks,

- Ted

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