SL2S3003 datasheet(43/82 Pages) NXP

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NXP Semiconductors

SL2S3003/SL2S3003TT

ICODE 3 (TagTamper)

8.5.3.6 PROTECT PAGE

Command code = B6h

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

is divided into two arbitrarily sized pages. The command is used to define the access conditions for the two

pages.

The protection pointer address defines the base address of the higher user memory segment Page H. All block

addresses smaller than the protection pointer address are in the user memory segment Page L.

Table 66 shows an example of the user memory segmentation with the protection pointer address 20 (0x14).

Block

Byte 0

Byte 1

Byte 2

Byte 3

Description

Page L

Page H

0x00

Protection

Counter

Table 66. Memory organization

Note: If the protection pointer address is set to block 0, the entire user memory (block 0 to block 74) is defined

as Page H.

The access conditions and the protection pointer address can be changed under the following circumstances:

• The related passwords (Read and Write password) have been transmitted first with the SET PASSWORD

command.

• The page protection condition is not locked (see Section 8.5.3.7 "LOCK PAGE PROTECTION CONDITION").

The timing of the command is write alike.

SOF

Flags

PROTECT

PAGE

IC Mfg

code

UID

Protection

pointer

address

Extended

protection

status

CRC16

EOF

8 bits

64 bits

optional

8 bits

16 bits

Table 67. POTECT PAGE request format

Remark: The label IC only accepts protection pointer address values from 0x00 (block 0) to 0x4A (block 74).

Block 75 (containing the 24-bit counter) is excluded from the standard user memory password protection

scheme.

Note: You can use the WRITE CONFIG command to block 20 in the configuration memory to write the

protection pointer address PPC_PNTR. See Table 9).

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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