ST25TV02K datasheet(52/90 Pages) STMICROELECTRONICS

52 / 90 page

Table 91. Write Password response format when Error_flag is NOT set

Response SOF

Response_flags

CRC16

Response EOF

8 bits

16 bits

Response parameter:

•

no parameter.

Table 92. Write Password response format when Error_flag is set

Response SOF

Response_flags

Error code

CRC16

Response EOF

8 bits

16 bits

Response parameter:

•

Error code as Error_flag is set:

–

02h: command not recognized

–

03h: command option not supported

–

10h: the password number is incorrect

–

12h: update right not granted, Present Password command not previously executed or password

locked

–

14h: block was not successfully programmed

Figure 25. Write Password frame exchange between VCD and ST25TV02K/512

SOF

Write

Password

request

VCD

EOF

ST25TV02K/512

SOF

Write

Password

response

EOF

SOF

EOF

ST25TV02K/512

Write sequence

when error

Write

Password

response

6.4.21

Present Password

On receiving the Present Password command, the ST25TV02K/512 compare the requested password with

the data contained in the request and report if the operation has been successful in the response. Refer to

Section 5.2 Data protection for details on password management. After a successful command, the security

session associated to the password is open as described in Section 5.2 Data protection.

Table 93. Present Password request format

Request

SOF

Request_flags

Present

Password

IC Mfg

code

UID (1)

Password

number

Password

CRC16

Request

EOF

8 bits

B3h

02h

64 bits 8 bits

32 or 64 bits 16 bits

1. The field is optional.

Request parameters:

ST25TV02K ST25TV512

RF commands

DS12074 - Rev 11

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