> It states one place in the > docs that it varies from 3.65 to 4.28 but I don't know if that is a horror > scenario or if it actually could happen. It's the spec, which is all you need to know. It's what you should design to unless you're willing to test and characterize individual chips yourself. Even then you can't complain to Microchip about parts that you can't use but are within their spec. ***************************************************************** Embed Inc, embedded system specialists in Littleton Massachusetts (978) 742-9014, http://www.embedinc.com -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads