At 12:56 PM 1/12/2011, Gordon Williams wrote: >The question is the best way to get an accurate clock over this temperatur= e >range. I'm looking for something in the 4 to 10 Mhz range. In past PIC >projects I've used in internal oscillator and don't have any experience wi= th >crystals. Maxim makes a 32KHz stabilized module that is relatively=20 inexpensive. We use them here as intermediate standards for=20 calibrating our other 32KHz crystal-based units. These units from Maxim are really rather good. Sorry - don't recall=20 the exact part number or price. dwayne --=20 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 --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .