NT3H2111 Datasheet, PDF (49/77 Pages) NXP Semiconductors – Designed to be the perfect enabler for NFC in home-automation

NXP Semiconductors
NT3H2111/NT3H2211
NFC Forum Type 2 Tag compliant IC with I²C interface
NFC device
NTAG ,,ACK''
Cmd
Addr
CRC
368 μs
NTAG ,,NAK''
T_ACK
T_NAK
Data
CRC
2907 μs
NAK
57 μs
Time out
Fig 22. READ_SIG command
T_TimeOut
aaa-021657
Table 23. READ_SIG command
Name
Code
Cmd
3Ch
Addr
00h
CRC
-
Signature
-
NAK
see Table 17
Description
read ECC signature
RFU, is set to 00h
CRC according to Ref. 1
ECC Signature
see Section 10.3
Length
1 byte
1 byte
2 bytes
32 bytes
4 bit
Table 24. READ_SIG timing
These times exclude the end of communication of the NFC device.
READ_SIG
T_ACK/NAK min
n=9^[1]
T_ACK/NAK max
T_TimeOut
[1] Refer to Section 10.2 “Timing”.
T_TimeOut
5 ms
Details on how to check the signature value are provided in the corresponding Application
note. It is foreseen to offer an online and offline way to verify originality of NTAG I²C plus.
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.
49 of 77