MB89R118 Datasheet, PDF (29/45 Pages) Fujitsu Component Limited. – ISO/IEC 15693 Compliant FRAM Embedded High-speed RFID LSI FerVID family

MB89R118
2-9. Lock AFI command
On receiving the Lock AFI command, the transponder locks (write disable) permanently the data of AFI.
The transponder performs verification after writing and returns an error code if the writing has failed.
If the Option_flag (bit 7) is “0”, the transponder shall return its response when it has completed the lock operation
starting after <t1nom + a multiple of 4096/fc (302.1 µs)> with total tolerance of ±32/fc (2.4 µs) and latest within
20 ms. If it is “1”, transponder shall wait for the reception of an EOF from the reader/writer and upon such
reception still return its response (However, if an EOF is not sent within 38 ms, the time-out occurs and the
transponder can receive another command) .
Once the Lock AFI command has been received, the data of AFI cannot be changed by the Write AFI command.
• Request
[Request from the reader/writer to the transponder]
SOF
Flag
Command (Lock AFI) UID (Addressed mode)
8 bits
8 bits (“28H”)
64 bits
CRC
16 bits
EOF
• Response
[Response from the transponder to the reader/writer]
(1) When Error_flag set
SOF
Flag
Error code
8 bits (“01H”)
8 bits
CRC
16 bits
EOF
(2) When Error_flag not set
SOF
Flag
8 bits (“00H”)
CRC
16 bits
EOF
2-10. Write DSFID command
On receiving the Write DSFID command, the transponder writes the data of DSFID to FRAM.
The transponder performs verification after writing and returns an error code if the writing has failed.
If the Option_flag (bit 7) is “0”, the transponder shall return its response when it has completed the write operation
starting after <t1nom + a multiple of 4096/fc (302.1 µs)> with total tolerance of ± 32/fc (2.4 µs) and latest within
20 ms. If it is “1”, transponder shall wait for the reception of an EOF from the reader/writer and upon such
reception still return its response (However, if an EOF is not sent within 38 ms, the time-out occurs and the
transponder can receive another command) .
• Request
[Request from the reader/writer to the transponder]
SOF
Flag Command (Write DSFID) UID (Addressed mode)
8 bits
8 bits (“29H”)
64 bits
DSFID
8 bits
CRC
16 bits
EOF
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