On Friday, April 12, 2002, at 04:24 , Keong wrote: > MCLRE must be turn 'on' even for using the wake up > from sleep feature not just when using a reset > circuit? As far as I know, the _MCLRE option simply determines if you are using the INTERNAL or EXTERNAL reset. _MCLRE_ON means you use GP3 as your reset _MCLRE_OFF means you use the internal reset What is it exactly that you are trying to do? Do you want to use GP3 for a reset or to wake up from sleep? From your original email (I just re-read it) it appears that your "expected result" is a reset. If you are expecting a wake up from sleep, then I am afraid I can not help you, as I have not played around with this feature yet. Now I hope that some of the wiser members of the list will come to my rescue! :-) Cheers, Sean -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads