MB89R112 datasheet(24/49 Pages) RAMXEED

24 / 49 page

MB89R112

DS411-00004-3v0-E



Response

[Response from the transponder to the reader/writer]

(1) When Error_flag set

(2) When Error_flag not set

2-3. Lock Block command

On receiving the Lock Block command, the transponder locks (write disable) permanently the data stored

in one specified single block.

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 (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.)

Once the Lock Block command has been received, data in the locked block cannot be changed by any

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

Error code

CRC

EOF

8 bits (“01H”)

8 bits

16 bits

SOF

Flag

CRC

EOF

8 bits (“00H”)

16 bits

SOF

Flag

Command

(Lock Block)

UID

(Addressed mode)

Number of

blocks

CRC

EOF

8 bits

8 bits (“22H”)

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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