On Tue, 6 Jan 1998 17:41:05 +0100 Rickard Gunie <e96rg@EFD.LTH.SE>
writes:
>How fast can a PIC16C84 run ? I would like to run it @ 12MHz, have
>anyone tried this ? I have done it with one chip, it broke after a
>couple times of reprogramming. Is it possible to determine if the chip
>can run @ 12Mhz without breaking it ?

It won't cause the chip to "break" exceeding the clock speed.  It will
just suffer from "soft" malfunctions.  Maybe the last reprogramming
required one of the slower bits in the code EEPROM to work where the
other ones didn't.  I've had a F84-10 going at 16 MHz but it definitely
wouldn't do 20.  This will vary from chip to chip and from program to
program.

Of course there's no guarantee that the chip will work.  You may be able
to test each one at a speed faster than the final application requires
and reject the ones that don't work.  If the C84 chip could work reliably
faster than 10 MHz, Microchip would certainly advertise it.

>