Spehro Pefhany wrote: > I like the security of an external high-voltage requirement for > programming. Hi Spehro, Did you see that these parts require a 32-bit key sequence that is presented on PGD in order to enter Program/Verify mode. If the 32-bit sequence is not valid, all bets are off. Hopefully that gives you a little more security about this. Best regards, Ken Pergola _______________________________________________ http://www.piclist.com View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist