@ Jan-Erik Soderholm: http://en.wikipedia.org/wiki/Nub I don't use mplab or it's manual. That's why I looked for an answer on the Microchip website. I downloaded the manual, thanks! @ All other repliers: Thanks! Marcel -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist