NTAG213F/216F
NXP Semiconductors
NFC Forum T2T IC with 144/888 bytes user memory and field detection
10.5 COMPATIBILITY_WRITE
The COMPATIBILITY_WRITE command is implemented to guarantee interoperability with
the established MIFARE Classic PCD infrastructure, in case of coexistence of ticketing
and NFC applications. Even though 16 bytes are transferred to NTAG21xF, only the least
significant 4 bytes (bytes 0 to 3) are written to the specified address. It is recommended to
set all the remaining bytes, 04h to 0Fh, to logic 00h. The COMPATIBILITY_WRITE
command is shown in Figure 18, Figure 19 and Table 31.
Table 34 shows the required timing.
NFC device
Cmd
Addr
CRC
ACK
NTAG ,,ACK''
T
T
ACK
NAK
368 µs
59 µs
NTAG ,,NAK''
NAK
59 µs
T
TimeOut
Time out
aaa-006991
Fig 18. COMPATIBILITY_WRITE command part 1
NFC device
Data
CRC
ACK
NTAG ,,ACK''
T
T
ACK
1558 µs
59 µs
NTAG ,,NAK''
NAK
NAK
59 µs
T
TimeOut
Time out
aaa-006992
Fig 19. COMPATIBILITY_WRITE command part 2
Table 33. COMPATIBILITY_WRITE command
Name
Cmd
Addr
CRC
Data
Code
Description
Length
1 byte
A0h
compatibility write
page address
-
-
-
1 byte
CRC according to Ref. 1
2 bytes
16-byte Data, only least significant 4 16 bytes
bytes are written
NAK
see Table 21
see Section 9.3
4-bit
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
262231
43 of 56
NXP [ NXP ]
