----- Original Message -----
From: Josh Koffman <listsjosh@3MTMP.COM>

> Thanks for the reply Bob
>
> > Re: Overclocking -- JUST SAY NO
>
> Ok, I was just curious. I promise I won't :) BTW, didn't we have a
> discussion about people overclocking the f84? Didn't we figure out that
> Microchip derated some of the chips to meet quotas? That's the only
> reason I was really asking.

It is something of a big issue to some people.  As for the derating thing,
IIRC it is that they simply don't test the batch samples as rigourously.  I
really don't see the point in uChip marking chips lower than what they
could, but then, most 20MHz chips only cost pennies more than the 4MHz
versions.

You would be exceeding the manufacterer rating by 5x, which is quite a lot.
As long as you are doing it only for your projects and not selling them I
don't see a problem, just don't complain to us if it doesn't work.
Basically the datasheet is giving you what the manufacturer is willing to
guarantee.  The general idea is if you go outside of the specs of the maker
you can't blame them for squat, but it just might work reliably, but then if
a new bach of chips were made you might be out of luck.

Jeff

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