SL2S2602 datasheet(21/55 Pages) NXP

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NXP Semiconductors

SL2S2602

ICODE SLIX2

SL2S2602

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Product data sheet

Rev. 4.1 — 25 July 2017

COMPANY PUBLIC

276341

21 / 55

Table 23. LOCK PASSWORD response format when Error_flag NOT set

SOF

Flags

CRC16

EOF

8 bits

16 bits

9.5.3.5 64 BIT PASSWORD PROTECTION

Command code = BBh

The 64-bit PASSWORD PROTECTION command enables the Label IC to be instructed

that both of the Read and Write passwords are required to get access to password

protected blocks (pages). This mode can be enabled if the Read and Write passwords

have been transmitted first with a SET PASSWORD command.

If the 64-bit password protection is enabled, both passwords are required for read & write

access to protected blocks (pages).

Once the 64 bit password protection is enabled, a change back to 32-bit password

protection (read and write password) is not possible.

Remark: A retransmission of the passwords is not required after the execution of the 64-

bit PASSWORD PROTECTION command.

Remark: The 64-bit PASSWORD PROTECTION does not include the 16 bit counter

block.

The timing of the command is write alike.

Table 24. 64 BIT PASSWORD PROTECTION request format

SOF

Flags

64 BIT

PASSWORD

PROTECTION

IC Mfg

code

UID

CRC16

EOF

8 bits

64 bits

optional

16 bits

Table 25. 64 BIT PASSWORD PROTECTION response format when Error_flag set

SOF

Flags

Error code

CRC16

EOF

8 bits

16 bits

Table 26. 64 BIT PASSWORD PROTECTION response format when Error_flag NOT set

SOF

Flags

CRC16

EOF

8 bits

16 bits

9.5.3.6 PROTECT PAGE

Command code = B6h

The PROTECT PAGE command defines the protection pointer address of the user

memory to divide the user memory into two arbitrarily sized pages and defines the

access conditions for the two pages.

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