On Wed, 28 Feb 2001 09:43:41 +1100, you wrote: >I think I fried my first PIC last night. > >It was siting in a PCB running normally, but later I noticed a test LED >was only half lit. > >I went to touch the 16F873 after removing power and heard a 'Tssst' >sound as the Microchip logo got branded into the tip of my finger. I'd >swear it was so hot, I could have lit a match off it. > >The bootloader failed to work after that, so I assumed it was dead, but >after cooling off it worked again. For about 3 minutes, the PCB was >ticking like chrome exaust pipes cooling off. Unfortunately, the PIC >seems to run a bit warm now, so I don't think I'd trust it for work >anymore, especially not for development when you don't need a cranky >chip. > >The problem: A floating test lead with 12VDC wiggled it's way over to a >VCC test pin and made contact. I have seen the bond wires on a JW pic GLOW , and another which melted itself into a plastic prototyping board, and both times had the chip still work afterwards. This sort of thing gives a lot of confidence in the PICs robustness, although not recommended in production! -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.