> http://www.microchip.com/download/lit/suppdoc/refernce/midrange/33023a.pdf Cheers, for everyone else's sake I'd be interested to know how you found it. I did once to download it, and had yet another look look around just now but still got lost in that rat's nest of menus. If I didn't know that pdf existed I'd be none the wiser. There's so much information at Microchip's site it deserves a better system to find what you want. Quite frankly, more often than not I can't be bothered with the frustration -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads