I would probe the 10LF322 supply pins, Vdd and Vss, with a DSO or other logger, and look for transitions while forcing the brownout. I'd add Vpp for good measure, as Vihh is 8V minimum. Otherwise, nothing sprang up in your config. Haven't used this chip though. --=20 James Cameron http://quozl.linux.org.au/ --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .