> One way to add some product reverse-engineering protection is to use a
> PLD for logic functions external to the micro. Set its security
> bit(s), in addition to the one in the micro, and then you've got two
> significant hacker barriers. Of course, this only works if the design
> uses substantial non-obvious logic functions...
>
> Mike Hardwick Decade Engineering

I think that it all depends on who the enemy are. In my case they are
smalltime shops with some experience and enough of it to copy a small
design with 25 parts and a PIC and sell it as your own. There are people
who will write code for a PIC in such a role for a small fee, knowing full
well what it is for. In this case, erasing the numbers and setting the
fuses is a good start.

Peter

--
http://www.piclist.com hint: To leave the PICList
mailto:piclist-unsubscribe-request@mitvma.mit.edu