At 10:16 AM 7/15/99 +0200, you wrote: >Hi, > >I have some 7 16F84's that I can not erase. It may be that I've >programmed them with code protection on. I know this was discussed >before, but I lost my archive. >Can anyone briefly explain if setting cp on on a 16F84 makes it >unerasable. >Is there any way to use my 7 chips again? > >Ronald That is not your problem. If the chips are still good, even if code protect is on, they are erasable. You can erase them and reprogram them, but you can't read them until they've been erased. John Hansen