ST25DV64KC datasheet(115/203 Pages) STMICROELECTRONICS

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7.6.25

Extended Get Multiple Block Security Status

When receiving the Extended Get Multiple Block Security Status command, the ST25DVxxKC sends back the

security status for each address block: 0 when the block is writable else 1 when block is locked for writing. The

block security statuses are defined by the area security status. The blocks are numbered from 00h up to the

maximum memory block number in the request, and the value is minus one (–1) in the field. For example, a value

of '06' in the “Number of blocks” field requests to return the security status of seven blocks.

This command does not respond an error if number of blocks overlap areas or overlap the end of the user

memory.

The number of blocks is coded on 2 Bytes so all memory blocks of ST25DV16KC and ST25DV64KC can be

addressed using this command.

The Option_flag is not supported. The Inventory_flag must be set to 0.

Table 180. Extended Get Multiple Block Security Status request format

Request

SOF

Request_flags

Extended

Get Multiple

Block

Security

Status

UID(1)

First block

number

Number of

blocks

CRC16

Request

EOF

8 bits

3Ch

64 bits

16 bits

1. This field is optional.

Request parameter:

•

Request flags

•

UID (optional)

•

First block number (from LSB byte to MSB byte)

•

Number of blocks (from LSB byte to MSB byte)

Table 181. Extended Get Multiple Block Security Status response format when Error_flags NOT set

Response SOF

Response_flags

Block security status

CRC16

Response EOF

8 bits

8 bits (1)

16 bits

1. Repeated as needed.

Response parameters:

•

Block security status

Table 182. Block security status

Reserved for future use

All at 0

0: Current block not locked

1: Current block locked

Table 183. Extended Get Multiple Block Security Status response format when Error_flag is set

Response SOF

Response_flags

Error code

CRC16

Response EOF

8 bits

16 bits

ST25DV04KC ST25DV16KC ST25DV64KC

RF commands

DS13519 - Rev 3

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