NTAG213F/216F
NXP Semiconductors
NFC Forum T2T IC with 144/888 bytes user memory and field detection
Table 16. NFC counter mirror - NTAG213F Virtual memory content
Page address
Byte number
dec.
0
hex.
0
1
2
3
2C
ASCII
00h
01h
02h
03h
04h
05h
06h
07h
08h
09h
0Ah
0Bh
0Ch
0Dh
0Eh
...
04
12
F6
E1
01
34
01
6E
63
69
78
6D
3D
46
00
E1
4C
internal
10
41
28
1
80
2
lock bytes
00
3
12
A0
20
55
70
6D
64
68
3F
30
31
00
4
03
0C
....
5
03
D1
4.(.
6
1C
78
01
.$U.
nxp.
com/
inde
x.ht
7
2E
8
6F
6E
2E
6C
30
2F
9
65
10
11
12
13
14
...
39
40
41
42
43
44
74
6D
ml?m
=003
F31.
....
33
33
FE
00
00
27h
28h
29h
2Ah
2Bh
2Ch
00
00
00
00
....
dynamic lock bytes
RFUI 0C
RFUI
94
AUTH0
Access
PWD
PACK
RFUI
8.7.3 UID and NFC counter mirror function
This function enables NTAG21xF to virtually mirror the 7 byte UID and 3byte NFC counter
value in ASCII code into the physical memory of the IC separated by 1 byte (“x” character,
78h). The length of the mirror requires 21 bytes to mirror the UID, NFC counter value and
the separation byte in ASCII code. On the READ or FAST READ command to the involved
user memory pages, NTAG21xF will respond with the virtual memory content of the UID
and NFC counter in ASCII code.
The position within the user memory where the mirroring shall start is defined by the
MIRROR_PAGE and MIRROR_BYTE values.
The MIRROR_PAGE value defines the page where the mirror shall start and the
MIRROR_BYTE value defines the starting byte within the defined page.
The UID and NFC counter mirror function is enabled with a MIRROR_PAGE and a
MIRROR_BYTE value according to Table 9 and the MIRROR_CONF bits are set to 11b.
If the NFC counter is password protected with the NFC_CNT_PWD_PROT bit set to 1b
(see Section 8.5.7), the NFC counter will only be mirrored into the physical memory, if a
valid password authentication has been executed before.
NTAG213F_216F
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2013. All rights reserved.
Product data sheet
COMPANY PUBLIC
Rev. 3.1 — 28 August 2013
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