Olin Lathrop wrote: > > I am using a PIC16F877-20mhz and would like to know if > > anyone can recommend a part number for Digikey or Mouser > > for a suitable crystal. Thanks for your help. > > I usually just get the cheapest 20MHz parallel resonant > crystal they carry. Those are the ones specified with > a capacitance value, typically around 20pF. There was a post "Re: [PIC]: Clock options..." +++++++++++++++++++++++++++++++++ Dennis J. Murray wrote: > What's worse, Olin, is that you can also wipe out very > low power crystals in XT mode!! Been there, done that - didn't like > it!! An oversight on my part - put 8 evaluation units in the field > and 5 failed in the first 2 weeks! I don't like "dumbing out" like > that! Olin can't, he is known to choose drive limiting resistor correctly. Mike. MChip's docs: AN588 "PICmicroT Microcontroller Oscillator Design Guide" AN826 "Crystal Oscillator Basics +++++++++++++++++++++++++++++++++ Mike. -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads