ST25TA02K-P datasheet(42/64 Pages) STMICROELECTRONICS

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RF command sets

ST25TA02K-P

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DocID027794 Rev 2

Table 36 defines the R-APDU of the Verify command.

Note:

For further return codes and definitions, refer to Section 5.6.2: Status and error codes.

5.7.2

Change Reference Data command

The Change Reference Data command replaces the read or write password related to the

NDEF files previously selected. It can be performed only if the security status satisfies the

security attributes for this command.

Before sending this command, the verify command with the correct NDEF write password

shall be issued. Thus, this command changes the reference data of the NDEF file.

Table 37 defines the Change Reference Data command.

Table 37. Change reference data command format

Table 36. R-APDU of the Verify command

Data

SW1

SW2

Comment

Length

1 byte

Value

0x90

0x00

Command completed, the password is correct

Value

0x69

0x84

The conditions of use are not satisfied (e.g. no

NDEF file was selected or Write access equal to

FFh (write lock) or read access equal to FEh (read

lock)

Value

0x69

0x81

Cmd incompatible with file structure

Value

0x69

0x82

Security status not satisfied

Value

0x6A

0x80

Incorrect parameter in cmd data field

Value

0x63

0x00

A password is required

Value

0x63

0xCX (1)

1. At each session, the RF host can check a password 3 times.

The password transmitted is incorrect and X

encodes the number of further allowed retries.

Name

CLA

INS

P1 & P2

Data

0x00

0x24

2 bytes

0x10

Lc bytes

Class byte

Instruction code

Password identification

0x0001: Read password transmit

0x0002: Write password transmit

Other: RFU(1)

1. Return ERROR code when used.

0x10: the password is present in the data field

NDEF new file Password

(empty field)

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