Typically "over clocked" will fail at temperatures above 20C, or lower
than 5V supply and on a percentage of parts.
The amount possible to overclock will also be fewer devices, higher
voltage, lower temperature as you raise clock speed.

It's not worth the risk on reliability grounds. The next one may not
work, there may be premature failure, or it will fail in summer.


On Mar 24, 1:33 pm, vasile surducan <[email protected]> wrote:
> On Wed, Mar 24, 2010 at 3:22 PM, Sebastien Lelong <
>
> [email protected]> wrote:
> > Hi guys,

> > crystal. With 16 MHz Xtal, you have 16 * 4 = 64 Mhz, 4 being the black magic
> > factor coming from PLL.
>
> > Now, what if I use a 20 MHz Xtal ?... Will PIC gets burnt ? Or will it just
> > won't work ?
>
>    20MHz PICs works ok at 25MHz
>    40MHz PLL (10Mhz XTAL) works at 48Mhz (12MHz XTAL)
>
>   At 80MHz there is very low chance to work.
>
>
>
> > Cheers,
> > Seb

listen to Vasile! Assume in this case he is being kind! :-)

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