> You can apply 10 volts to RA4, but the PIC will eventually take some hurt
> in one way or another. Sooner or later the input buffer will fail. However
> you can still use the pin as an output, but you must never use a
> bit-setting instruction for any pin on port A, because you have a blown
> input buffer and RA4 will never set the way you want it to(the buffer
fails
> high or low, you don't get to choose). So use a shadow register and only
> write to port A as a whole.

A uChip guy (can't remember the name) once said that RA4 can take up to
~15V. Incidently this makes the pin useable to switch the 12-14V VPP in my
programmer....

Wouter

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