ISO 15693-Compliant 1Kb Memory Fob
Request Data for the Lock Block Command*
REQUEST FLAGS
(1 Byte)
COMMAND
22h
UID
(8 Bytes)
BLOCK NUMBER
(1 Byte)
*If this command is processed without any error, the slave responds with a response flags byte of 00h.
Request Data for the Read Single Block Command
REQUEST FLAGS
(1 Byte)
COMMAND
20h
UID
(8 Bytes)
BLOCK NUMBER
(1 Byte)
Response Data for the Read Single Block Command (No Error, Option_flag Not Set)
RESPONSE FLAGS
00h
MEMORY DATA
(8 Bytes)
Response Data for the Read Single Block Command (No Error, Option_flag Set)
RESPONSE FLAGS
00h
Legend:
SECURITY STATUS
(1 Byte)
MEMORY DATA
(8 Bytes)
CODE
00h
01h
SECURITY STATUS CODE EXPLANATION
The memory block is not protected.
The memory block is write protected.
Lock Block
The Lock Block command permanently locks (write pro-
tects) the selected block and reports the success of the
operation in the response. Locking a block takes
t PROG . The response is transmitted after the protection
byte is updated. The block protection can alternatively
be achieved by direct writing to memory block 11.
Before using the Lock Block command, the final block
data should be defined and written to the device.
Read Single Block
The Read Single Block command allows for retrieving
the data of a single memory block. This command uses
one command-specific parameter, which is the memory
block number. Valid block numbers are 00h to 11h. If
the Option_flag bit is set, the response includes the
block’s security status.
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