NTP53X2 datasheet(71/133 Pages) NXP

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NXP Semiconductors

NTP53x2

NTAG 5 link - NFC Forum-compliant I2C bridge

NTP53x2

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Product data sheet

Rev. 3.3 — 3 July 2020

COMPANY PUBLIC

544533

71 / 133

Table 135. 64 BIT PASSWORD PROTECTION response format when Error_flag is NOT set

Flags

CRC16

8 bits

16 bits

Table 136. 64 BIT PASSWORD PROTECTION response format when Error_flag is NOT set

Flags

Error Code

CRC16

8 bits

16 bits

8.2.3.3.6 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.

The protection pointer address defines the base address of the higher user memory

segment Page 0-H. All block addresses smaller than the protection pointer address are in

the user memory segment Page 0-L.

Table below shows an example of the user memory segmentation with the protection

pointer address NFC_PP_AREA_0H 14h.

Remark: In the example below PP_AREA_1 is pointing outside the user memory.

Table 137. Memory organization

Block Byte 0

Byte 1

Byte 2

Byte 3

Description

00h

01h

02h

12h

13h

Page 0-L

14h

15h

Page 0-H

1FFh

Protection

Counter

Remark: If the protection pointer address is set to block 0, the entire user memory is

defined as Page 0-H.

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

following circumstances for plain password mode:

• 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 8.2.3.3.7)

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

following circumstances for AES mode:

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