> I would like to know what would be the expected > behaviour of an over-clocked PIC. In my case I want to > use a PIC16F84-04 at frecuencies above the 4Mhz. I've > seen projects using 10Mhz xtal and even 12Mhz xtal (pong) > with this particular chip. What's the highest frecuency > this micro can tolerate? If you're making a hobby project for yourself, go ahead. It either works, or it dosen't. If you're thinking about making more than one, then 4.000 is as fast as I'd go.