NTAG213F/216F
NXP Semiconductors
NFC Forum T2T IC with 144/888 bytes user memory and field detection
10.3 FAST_READ
The FAST_READ command requires a start page address and an end page address and
returns the all n*4 bytes of the addressed pages. For example if the start address is 03h
and the end address is 07h then pages 03h, 04h, 05h, 06h and 07h are returned. If the
addressed page is outside of accessible area, NTAG21xF replies a NAK.
For details on the command structure, refer to Figure 16 and Table 29.
Table 30 shows the required timing.
NFC device
Cmd StartAddr EndAddr
453 µs
CRC
Data
CRC
NTAG ,,ACK''
T
T
ACK
NAK
depending on nr of read pages
NAK
57 µs
NTAG ,,NAK''
T
TimeOut
Time out
aaa-006989
Fig 16. FAST_READ command
Table 29. FAST_READ command
Name
Cmd
Code
Description
Length
1 byte
1 byte
1 byte
2 bytes
3Ah
read multiple pages
start page address
end page address
StartAddr
EndAddr
CRC
-
-
-
CRC according to Ref. 1
Data
-
data content of the addressed pages n*4 bytes
NAK
see Table 21
see Section 9.3
4-bit
Table 30. FAST_READ timing
These times exclude the end of communication of the NFC device.
TACK/NAK min
TACK/NAK max
TTimeOut
FAST_READ
n=9[1]
TTimeOut
5 ms
[1] Refer to Section 9.2 “Timings”.
In the initial state of NTAG21xF, all memory pages are allowed as StartAddr parameter to
the FAST_READ command.
• page address 00h to 2Ch for NTAG213F
• page address 00h to E6h for NTAG216F
Addressing a memory page beyond the limits above results in a NAK response from
NTAG21xF.
The EndAddr parameter must be equal to or higher than the StartAddr.
NTAG213F_216F
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© NXP B.V. 2013. All rights reserved.
Product data sheet
COMPANY PUBLIC
Rev. 3.1 — 28 August 2013
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