MB89R112 datasheet(29/49 Pages) RAMXEED

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MB89R112

DS411-00004-3v0-E

2-9. Write DSFID command

On receiving the Write DSFID command, the transponder writes the data of DSFID to FeRAM.

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 (320.9 s)  a multiple of 4096/fc (302.1 s)” with total tolerance of  32/fc

(2.4 s) 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]



Response

[Response from the transponder to the reader/writer]

(1) When Error_flag set

(2) When Error_flag not set

SOF

Flag

Command (Write DSFID) UID (Addressed mode)

DSFID

CRC

EOF

8 bits

8 bits (“29H”)

64 bits

8 bits

16 bits

SOF

Flag

Error code

CRC

EOF

8 bits (“01H”)

8 bits

16 bits

SOF

Flag

CRC

EOF

8 bits (“00H”)

16 bits

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