Sounds like it could be a watch dog timer time out. > > I'm programming PIC18F458 to get temperatures.Problem is PIC resets itself > but after reset it goes up from the point where it get reset.I mean register > values don't change. > How come this be?Program counter gets back to 000h but after reset it goes > back where last stayed. > --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.553 / Virus Database: 345 - Release Date: 18/12/2003 -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.