NTAG213F/216F
NXP Semiconductors
NFC Forum T2T IC with 144/888 bytes user memory and field detection
Table 13. UID ASCII mirror - NTAG 213F 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
0Fh
10h
...
04
12
F6
E1
01
34
01
6E
63
69
78
6D
3D
31
32
38
00
E1
4C
internal
10
41
28
1
80
2
lock bytes
00
3
12
A0
28
55
70
6D
64
68
3F
34
31
43
30
00
4
03
0C
....
5
03
D1
4.(.
6
24
01
.$U.
nxp.
com/
inde
x.ht
7
78
2E
8
6F
6E
2E
6C
30
2F
9
65
10
11
12
13
14
15
16
...
39
40
41
42
43
44
74
6D
ml?m
=04E
1411
24C2
880.
....
45
34
31
34
32
38
FE
00
00
27h
28h
29h
2Ah
2Bh
2Ch
00
00
00
00
....
dynamic lock bytes
RFUI 0C
RFUI
54
AUTH0
Access
PWD
PACK
RFUI
8.7.2 NFC counter mirror function
This function enables NTAG21xF to virtually mirror the 3 byte NFC counter value in ASCII
code into the physical memory of the IC. The length of the NFC counter mirror requires 6
bytes to mirror the NFC counter value 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 NFC counter in ASCII code.
The position within the user memory where the mirroring of the NFC counter shall start is
defined by the MIRROR_PAGE and MIRROR_BYTE values.
The MIRROR_PAGE value defines the page where the NFC counter mirror shall start and
the MIRROR_BYTE value defines the starting byte within the defined page.
The NFC counter mirror function is enabled with a MIRROR_PAGE and MIRROR_BYTE
value according to Table 9 and the MIRROR_CONF bits are set to 10b.
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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