IB Peter Feucht wrote: > Now the 684 has an brown out reset, which is pricipally doing what I want= , > but I see no possibility to distict between a "cold boot reset" (made whe= n > e.g. batteries are changed) and brown out reset. >=20 Maybe I am missig something but the datasheet says:- 2.2.2.6 PCON Register The Power Control (PCON) register (see Table 12-2) contains flag bits to differentiate between a: =95 Power-on Reset (POR) =95 Brown-out Reset (BOR) =95 Watchdog Timer Reset (WDT) =95 External MCLR Reset George Smith --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .