SL2S3003FUD datasheet(39/82 Pages) NXP

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NXP Semiconductors

SL2S3003/SL2S3003TT

ICODE 3 (TagTamper)

8.5.3.2 SET PASSWORD

Command code = B3h

The SET PASSWORD command enables the different passwords to be transmitted to the label to access the

different protected functions of the commands. If the label is powered, the SET PASSWORD command must be

executed only once for the related passwords.

Note: The SET PASSWORD command can be executed only in Addressed or Selected mode except for the

Privacy password. If the Privacy password is transmitted, the timing of the SET PASSWORD command is write

alike. See Section 8.5.3.9 "ENABLE PRIVACY".

The XOR password must be calculated with the password and with twice the received random number from the

last GET RANDOM NUMBER command:

XOR_Password[31:0] = Password[31:0] XOR {Random_Number[15:0], Random_Number[15:0]}.

The different passwords are addressed with the password identifier.

SOF

Flags

SET PASSWORD

IC Mfg code UID

Password

identifier

XOR

password

CRC16

EOF

8 bits

64 bits

optional

8 bits

32 bits

16 bits

Table 51. SET PASSWORD request format

Password identifier

Password

01h

Read

02h

Write

04h

Privacy

08h

Destroy

10h

EAS/AFI

20h

Configuration memory

Table 52. Password Identifier

SOF

Flags

Error code

CRC16

EOF

8 bits

16 bits

Table 53. SET PASSWORD response format when Error_flag set

SOF

Flags

CRC16

EOF

8 bits

16 bits

Table 54. SET PASSWORD response format when Error_flag NOT set

Note: If the IC receives an invalid password, it does not execute commands like WRITE PASSWORD or LOCK

PASSWORD until a Power-On Reset (POR) or RF reset.

SL2S3003/SL2S3003TT

All information provided in this document is subject to legal disclaimers.

Product data sheet

Rev. 3.0 — 28 March 2024

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