topic NFC - lock / unlock in NFC https://community.nxp.com/t5/NFC/NFC-lock-unlock/m-p/493947#M175 <HTML><HEAD></HEAD><BODY><P>Hi,</P><P></P><P>I'm new in the NFC world and I'm currently evaluating your NTAG I2C (www.nxp.com/demoboard/OM5569)</P><P></P><P>As far as I know, it is possible to <STRONG>lock</STRONG> the chip through NFC, so that it is "read only".</P><P></P><P>My question:</P><P>Is it possible through I2C to <STRONG>unlock</STRONG> the chip ?</P><P></P><P>Thank you in advance</P></BODY></HTML> Mon, 21 Mar 2016 17:30:00 GMT patrickterreaux 2016-03-21T17:30:00Z NFC - lock / unlock https://community.nxp.com/t5/NFC/NFC-lock-unlock/m-p/493947#M175 <HTML><HEAD></HEAD><BODY><P>Hi,</P><P></P><P>I'm new in the NFC world and I'm currently evaluating your NTAG I2C (www.nxp.com/demoboard/OM5569)</P><P></P><P>As far as I know, it is possible to <STRONG>lock</STRONG> the chip through NFC, so that it is "read only".</P><P></P><P>My question:</P><P>Is it possible through I2C to <STRONG>unlock</STRONG> the chip ?</P><P></P><P>Thank you in advance</P></BODY></HTML> Mon, 21 Mar 2016 17:30:00 GMT https://community.nxp.com/t5/NFC/NFC-lock-unlock/m-p/493947#M175 patrickterreaux 2016-03-21T17:30:00Z Re: NFC - lock / unlock https://community.nxp.com/t5/NFC/NFC-lock-unlock/m-p/493948#M176 <HTML><HEAD></HEAD><BODY><P>Hello Patrick Terreaux:</P><P></P><P>As you mention the <STRONG>NTAG I2C</STRONG> tags have the static lock bytes and dynamic lock bytes to configure different regions of memory to "read-only" mode.</P><P></P><P>Once the lock bits are set to '1', this is irreversible from RF interface (NFC side), but the bits can indeed be reset to '0' from the I2C interface.</P><P></P><P>I hope this clarifies.</P><P>Have a good day!</P><P></P><P>Jorge Gonzalez</P></BODY></HTML> Wed, 23 Mar 2016 01:05:21 GMT https://community.nxp.com/t5/NFC/NFC-lock-unlock/m-p/493948#M176 Jorge_Gonzalez 2016-03-23T01:05:21Z