What kind of IC is this

Philip Pemberton classiccmp at philpem.me.uk
Wed Dec 31 13:47:20 CST 2008


Dave McGuire wrote:
>   Even the original Intel 8051/8751, circa 1980, has security bits. :-(  
> There are ways to get around (at least) those, though.

Only on the early mask revs. On the later chips, /EA is latched on reset, 
which means the "/EA toggle hack" doesn't work any more. Anything post-1990 is 
unlikely to be vulnerable, IIRC.

-- 
Phil.
classiccmp at philpem.me.uk
http://www.philpem.me.uk/



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