> OK, I must be looking in the wrong place. Let's start with the > 12F675, since I've got its programming spec open right now. Which > page is it on? > (URL: http://ww1.microchip.com/downloads/en/DeviceDoc/41191D.pdf ) you got me. 1.1 explicitly states that only two voltages are needed. I have been looking through a few programming specifications, but I can't find the note I wanted to refer you to. I get the feeling Micrichip has removed the note from the current versions of the programming specifications? Wouter van Ooijen -- ------------------------------------------- Van Ooijen Technische Informatica: www.voti.nl consultancy, development, PICmicro products docent Hogeschool van Utrecht: www.voti.nl/hvu -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist