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NTP53X2 Datasheet(PDF) 13 Page - NXP Semiconductors |
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NTP53X2 Datasheet(HTML) 13 Page - NXP Semiconductors |
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13 / 133 page  NXP Semiconductors NTP53x2 NTAG 5 link - NFC Forum-compliant I2C bridge NTP53x2 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2020. All rights reserved. Product data sheet Rev. 3.3 — 3 July 2020 COMPANY PUBLIC 544533 13 / 133 each block consists of 4 bytes (1 block = 32 bits). Bit 0 in each byte represents the least significant bit (lsb) and bit 7 the most significant bit (msb), respectively. User EEPROM map looks totally the same from NFC and I2C perspective. The last block contains the 16-bit counter (see Section 8.1.2.1). It is only accessible from NFC perspective. NTAG 5 link offers 2048 bytes (16384 bits) of user memory. Table 6. User memory organization Block Address NFC I2C Byte 0 (LSB) Byte 1 Byte 2 Byte 3 (MSB) Description 00h 0000h Capability Container or user memory 01h 0001h : : 1FEh 01FEh User Memory 1FFh - C0 C1 00h PROT Counter User data at delivery contains an NFC Forum-compliant capability container and an NDEF message containing the URL www.nxp.com/nfc. First 6 blocks are initialized as illustrated in below table. The counter block is initialized with all 00h. Content of the rest of the user memory is undefined and contains random (rnd) data at delivery. Table 7. Memory content at delivery Block Address NFC I2C Byte 0 Byte 1 Byte 2 Byte 3 00h 0000h E1h 40h 80h 09h 01h 0001h 03h 10h D1h 01h 02h 0002h 0Ch 55h 01h 6Eh 03h 0003h 78h 70h 2Eh 63h 04h 0004h 6Fh 6Dh 2Fh 6Eh 05h 0005h 66h 63h FEh 00h 06h 0006h rnd rnd rnd rnd ... ... rnd rnd rnd rnd 1FFh - 00h 00h 00h 00h 8.1.2.1 16-bit counter Last Block of the user memory contains the 16-bit counter. The block can be accessed with the standard read and write commands but special data format is required. The standard protection conditions for the user memory are not valid for the counter block. Counter block can only be accessed from NFC perspective. The 16-bit counter can be • preset to initial start value protected with the write password or by mutual authentication with a key with the Write privilege |
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