Also to this I would add you are most likely using 3rd overtone xtal. and that would make just over 6% over clocking Art ;-( ----- Original Message ----- From: Lance Allen To: Sent: Sunday, May 07, 2000 9:33 PM Subject: Re: Overclocking PICs : Charles wrote : : > I have a circuit using a 16C73 running at 20Mhz. For fun, I : > plugged in a 64Mhz can oscillator. The PIC ran! : > : > My scope confirmed that the PWM output was running over : > 3X the 20Mhz rate. I don't know if all the internal peripherals : > were running, but the timers and the PWM circuits were. The : > code was executing normally. : > : > Maybe Microchip should do some some screening and sell : > 50Mhz parts. : : AFAIR it was discovered by members of the PICLIST : what when it comes to gross overclocking that some : frequencies work and others dont, sort of random : distribution e.g your 63MHz may work fine but 58MHz : might crash and burn. : : : : _____________________________ : : Lance Allen : Technical Officer : Uni of Auckland : Psych Dept : New Zealand : : www.psych.auckland.ac.nz : : _____________________________