At 12:39 AM 2/1/00 -0500, you wrote: >> How does the PIC get a clock source when the 'F' series chips don't have >> an internal clock? > >Since I don't know much about PICs yet, I don't know if I'm wrong or not but >if we're talking about the same thing, running the F series with a >crystal/resonator vs without, I've gotten them to run with nothing at all on >the osc pins. To date, only the 16F627 & '628 in the flash range come with an internal R/C oscillator. If you have any other F parts working without an oscillator then it is only noise or perhaps there is 666 marked on the chip somewhere. ;-) Regards, Jim Robertson NEWFOUND ELECTRONICS ________________________________________ Email: newfound@pipeline.com.au http://www.new-elect.com MPLAB compatible PIC programmers. ________________________________________