At 10:07 AM 6/15/2007, Bob Blick wrote: >Following up on my post from yesterday that got no >resonses, I am assuming that everybody uses crystals >at 20MHz because they tried a resonator once and it >didn't work. Harold H has had good results with a particular brand of resonator at 20 MHz. IIRC, ECS was not reliable but Murata was. I'll have a look through my archive to see what I can find out. I don't do much at 20 MHz myself - projects with small (12c, 12f) parts use internal RC (sometimes with a 32 KHz crystal if I am doing time-keeping), most projects with larger PICs use a 4 MHz resonator. dwayne -- Dwayne Reid Trinity Electronics Systems Ltd Edmonton, AB, CANADA (780) 489-3199 voice (780) 487-6397 fax www.trinity-electronics.com Custom Electronics Design and Manufacturing -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist