NT3H2211W0FHKH Datasheet, PDF (21/77 Pages) NXP Semiconductors – NTAG I2C plus, NFC Forum Type 2 Tag compliant IC with I2C interface

NXP Semiconductors
NT3H2111/NT3H2211
NFC Forum Type 2 Tag compliant IC with I²C interface
8.3.8 Capability Container (CC)
According to NFC Forum Type 2 Tag specification the CC is located on page 03h (see
Ref. 1). To keep full flexibility to split the memory into an open and protected area, the
default value of the CC is initialized with 00000000h during the IC production.
NDEF messages can only be written, when these CC bytes are set according to
application-specific needs and NFC Forum specification by a WRITE command from the
I²C or NFC interface. According to NFC Forum specification once set to 1b, an NFC
Forum Device cannot set bits of the CC back to 0b. However, similar to the lock bits,
setting these bits back to 0b is again possible from I²C perspective. As long as I²C
address (byte 0) and static lock bytes (byte 10 and byte 11) are coded in block 00h, the
I²C address may be changed unintentionally.
NXP recommends setting the size parameter of the CC only to values that the T2T_Area
ends at lock bit granularity boundaries when using only part of the memory for storing
NDEF messages. Consequently T2T_Area size should be 112 + 64*N or 888 bytes with N
less or equal to 13 for the 1k version, or 176 + 128*N or 2032 bytes with N less or equal to
14 for the 2k version.
Note that the maximum NDEF Control TLV size is 883 bytes (5 bytes are needed for the
Lock Control TLV) for the 1K version and 1902 bytes (5 bytes each for Lock Control TLV
and Memory Control TLV to exclude 120 bytes reserved area at the end of sector 0) for
the 2k version.
In Figure 11 it is shown how the CC is changed when going from READ/WRITE to READ
ONLY state according to NFC Forum.
page 3
byte 0 1 2 3
byte E1h 10h 6Dh 00h
Example
possibel content after initialization
CC bytes
11100001 00010000 01101101 00000000
CC bytes
write command to page 3 over RF
00000000 00000000 00000000 00001111
result in page 3 (read-only state over RF)
11100001 00010000 01101101 00001111
aaa-021725
Fig 11. Possible configuration of CC bytes of NTAG I²C 1k version
8.3.9 User Memory pages
Pages 04h to E1h of Sector 0 via the NFC interface - Block 01h to 37h, plus the first 8
bytes of block 38h via the I²C interface is the user memory area for NTAG I²C plus 1k and
2k version.
In addition, complete Sector 1 (page 00h to FFh) via the NFC interface - block 40h to 7Fh
via the I²C interface is used as user memory area for NTAG I²C plus 2k version.
NT3H2111/NT3H2211
Product data sheet
COMPANY PUBLIC
All information provided in this document is subject to legal disclaimers.
Rev. 3.0 — 3 February 2016
359930
© NXP Semiconductors N.V. 2016. All rights reserved.
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