When using a crystal oscillator with the pic (either 16c5x or 16c6x series), it is unclear what values to use for the series resistors from each lead of the crystal to ground. The databooks provide a range. I know these values should be determined by the crystal characterstics. To avoid all of this calculation, I was wondering what values most of you typically use with a 4 or 8mhz crystal, similar to the crystal types offered by Digi-Key. Thanks. ______________________________________________________________________________ Neil B. Gandler University at Buffalo Department of Electrical and Computer Engineering Masters of Engineering v064mb9k@ubvms.cc.buffalo.edu http://www.acsu.buffalo.edu/~gandler/ (716) 691-3471 Seeking career in Instrumentation and Digital System Design San Jose, California August 1996 http://www.acsu.buffalo.edu/~gandler/resume.html ______________________________________________________________________________