Luigi Rizzo wrote: > > > 5446864: System and method for protecting contents of > > microcontroller memory by providing scrambled data > > in response to an unauthorized read access without > > alteration of the memory contents > > if this is the protection technique used on the 16C84, good that > they don't call it "Secure" :) .. or if it referred to the JW parts, "useful" I truly hope they patented the fact that the program cannot read the ID locations. I wouldn't like to see more silicon with that feature Even better : I hope they patented the fact that the checksum is the same for any program if you code protect 'all' -- Friendly Regards Tjaart van der Walt mailto:tjaart@wasp.co.za _____________________________________________________________ | WASP International http://www.wasp.co.za/~tjaart/index.html | | R&D Engineer : GSM peripheral services development | | Vehicle tracking | Telemetry systems | GSM data transfer | | Voice : +27-(0)11-622-8686 | Fax : +27-(0)11-622-8973 | | WGS-84 : 26010.52'S 28006.19'E | |_____________________________________________________________|