Olin Lathrop wrote: > > He might have ment external crystal osc vs. internal *crystal* osc. > > There is no internal crystal oscillator. I ment the canned external crustal oscillators where you just feed a clock signal into the PIC. And the internal oscillator (with uses an external crystal, yes...) Jan-Erik. -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads