Hello Hi

In the 123 page of the CD '97, you can see that if the part NO is JW
version, and you have programed the code protention, you can't to erase
this bits.

I sorry.

Regards
Santiago

Jim Main escribi—:
> 
> Can anyone tell me (authoratively) whether the 16C74A is one of the
> parts that can't be erased once code protected (UV parts).
> 
> Reason I ask is that I can't seem to erase three 16C74A's after my
> programmer threw a wobbler and code protected them.
> 
> I had a good look at the latest datasheets for the 16C74A and Microchip
> don't mention non-erasiblity at all - so what could be the problem??
> 
> Any ideas??  Is it just playing hard-to-erase?
> 
> Jim
> --
> Jim Main
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