ST25TV02K datasheet(59/90 Pages) STMICROELECTRONICS

59 / 90 page

6.4.27

Lock EAS

The EAS ID, the Telegram, the EAS telegram and EAS mode (reset/set) configuration can be locked definitively

with the lock_EAS command. It is not possible to unlock these EAS states once locked (even if presenting the

configuration password).

If the EAS configuration is password protected, the configuration password has to be first presented for the lock to

be performed

The lock_single_block command is not authorized on the EAS telegram blocks and will return an error.

Table 112. Lock EAS request format

Request SOF

Request_flags

Lock EAS

IC Mfg code

UID (1)

CRC16 request

EOF

8 bits

A4h

02h

64 bits

16 bits

1. The field is optional.

Request parameters:

•

Request flags

•

UID (optional)

Table 113. Lock EAS response format when Error_flag is NOT set

Response SOF

Response_flags

CRC16 request

EOF

8 bits

16 bits

Response parameter:

•

No parameter

Table 114. Lock EAS response format when Error_flag is set

Response SOF

Response_flags

Error code

CRC16

EOF

8 bits

16 bits

Response parameter:

•

Error code as Error_flag is set

–

03h: command option is not supported

–

11h: the configuration is already locked and thus cannot be locked again

–

12h: the configuration cannot be changed as either the security session is closed, or locked

–

13h: the configuration could not be successfully programmed

6.4.28

Write EAS ID

This command writes a new EAS ID (16 bits words stored in the configuration area)

If the EAS parameters are protected by the configuration password then the command can be executed only if the

configuration password has been successfully presented earlier in the same session.

If EAS is locked, the command is not authorized and the ST25TV02K/512 will return an error.

Table 115. Write EAS ID request format

Request SOF

Request_flags

Write EAS ID

IC Mfg code

UID (1)

EAS ID

CRC16 request

EOF

8 bits

A7h

02h

64 bits

16 bits

1. The field is optional.

Request parameters:

ST25TV02K ST25TV512

RF commands

DS12074 - Rev 11

page 59/90

ST25TV02K Datasheet(PDF) 59 Page - STMicroelectronics

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