Hard protection of words

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Hard protection of words LF - EN Hard protection of words Hard protection of words J.-D. Chatelain

It is not possible to remove a LF - EN Hard protection of words Hard protection of words WARNING It is not possible to remove a hard protection! Write protection Read protection One memory word Contrinex RFID systems RFID systems Contrinex RFID systems RFID systems Contrinex Contrinex Contrinex 1 1 1 Without protection: it is possible to read the word and to overwrite it With a read protection, it is not possible to read the word but it is possible to overwrite it With a write protection, it is possible to read the word but it is not possible to overwrite it With a read and write protection, it is neither possible to read the word nor to overwrite it Code 00 Code 02 Code 04 Code 06

00: no protection 02: read protection 04: write protection 06: read and write protection

Result of reading a zone containing protected words. Words at addresses 61 to 63, with protection code 2, have a hard protection against reading. The result of reading is always <FFFF>. Words at addresses 64 and 65, with protection code 4, has a hard protection against writing. It is not possible to overwrite this word, but it is still possible to read it.

Hard protection of words End of this chapter LF - EN Hard protection of words Hard protection of words End of this chapter J.-D. Chatelain