NT3H2111 Datasheet, PDF (48/77 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
Table 21. GET_VERSION timing
These times exclude the end of communication of the NFC device.
GET_VERSION
T_ACK/NAK min
n=9^[1]
T_ACK/NAK max
T_TimeOut
[1] Refer to Section 10.2 “Timing”.
T_TimeOut
5 ms
Table 22. GET_VERSION response for NTAG I²C plus 1k and 2k
Byte
no.
Description
NTAG I²C plus NTAG I²C plus Interpretation
1k
2k
0
fixed Header
00h
00h
1
vendor ID
04h
04h
NXP Semiconductors
2
product type
04h
04h
NTAG
3
product subtype
05h
05h
50 pF I²C, Field detection
4
major product version 02h
02h
2
5
minor product version 02h
02h
V2
6
storage size
13h
15h
see following information
7
protocol type
03h
03h
ISO/IEC 14443-3
compliant
The most significant 7 bits of the storage size byte are interpreted as an unsigned integer
value n. As a result, it codes the total available user memory size as 2ⁿ. If the least
significant bit is 0b, the user memory size is exactly 2ⁿ. If the least significant bit is 1b, the
user memory size is between 2ⁿ and 2ⁿ⁺¹.
The user memory for NTAG I²C plus 1k is 888 bytes. This memory size is between 512
bytes and 1024 bytes. Therefore, the most significant 7 bits of the value 13h are
0001001b, which means n = 9, and the least significant bit is 1b.
The user memory for NTAG I²C plus 2k is 1912 bytes. This memory size is between 1024
bytes and 2048 bytes. Therefore, the most significant 7 bits of the value 15h are
0001010b, which means n = 10, and the least significant bit is 1b.
10.6 READ_SIG
The READ_SIG command returns an IC specific, 32-byte ECC signature, to verify NXP
Semiconductors as the silicon vendor. The signature is programmed at chip production
and cannot be changed afterwards. The command structure is shown in Figure 24 and
Table 27.
Table 28 shows the required timing.
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.
48 of 77