Can damaged PIC still be programmable?

Testing/Troubleshooting
1

Hi,

this question may be silly. I just built the MidiMerger using the Pic16F877 chip and inserted it the wrong way. Voltage went down to 1 V.

After discovering the error I turned it around and found that the merger doesn’t work. However, the PIC is still programmable without any problem with the JDM programmer.

Can it be damaged in such a way or is it more likely I did something wrong in building up the merger? (I doublechecked everything,though)

Thanks for any help

Reiner

2

Hmmm… I’ve done some horrible things to my PICs and they still worked. One thing I’ve encoutered - I’ve messed them up to the point where I’ve had to completely erase them and re-program them. This usually happened when I was playing with code and sending new applications over and over to the PIC. You might try completely erasing it with your programmer.

Justin

3

yes and no.

I had a damaged pic which was still programable but some output pins were damaged.

So… yes and no …

Doc

4

When you´ve flipped the PIC you have pretty sure burnt it out… pretty sure. There is a *slight* chance that it got outta there without damage, but that´s just a point for fast reacting people (“Huh? Warm Pic… … HOT PIC???” *Pulling fast*).

:cry: