Hello, in the original posting was written, the chip "freezes". I would like to know under which circumstances it could occur (except pulling /MCLR permanently low). I have a customer who also complains our product "freezes" but only in the field. Neither he nor me could reproduce the situation and I have no idea how it could happen. BTW watchdog is activated, and even burn-in test run in my testlabor flawlessly. Any idea is greatly appreciated. Regards, Imre -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads