> So I need no resistor on my delicate microcontroller ? wrong ! No, sorry, right A micro does not need a current-limiting resistor in its power rail. I challenge you to find a schematic with an example It's possible to run a micro with no external components at all. And they aren't that delicate. They will tolerate all manner of abuse, more so than many other chips. However, they do have weak spots like the analogue inputs > I tried it on one of my chips , it released it`s magical smoke and > burned up Then something else went wrong. Perhaps a pin or pins was trying to sink or source current above spec, blew, and took the chip along for the ride. Or Vcc was disconnected with power from elsewhere able to leak into the chip through a port Joe -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist