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SRTAG2KL датащи(PDF) 12 Page - STMicroelectronics

номер детали SRTAG2KL
подробное описание детали  NFC Forum Type 4 Tag IC with 2-Kbit EEPROM
PDF  51 Pages
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производитель  STMICROELECTRONICS [STMicroelectronics]
домашняя страница  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

SRTAG2KL датащи(HTML) 12 Page - STMicroelectronics

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SRTAG2KL memory management
SRTAG2KL
12/51
DocID026583 Rev 2
3.1.3
NDEF file layout
The NDEF file contains the NDEF message which contains the User data. The RF host can
read and write data inside the file. The first two bytes named NDEF Message Length define
the size of the NDEF message. The NDEF Message Length shall be managed by the
application and the SRTAG2KL device does not check if its value is relevant vs the data
written by the RF host. The SRTAG2KL device uses the NDEF Message Length, e. g. the
standard read can be processed only inside the NDEF message; otherwise, the SRTAG2KL
device returns an error code. For more details about the read command, refer to
Section 5.6.7: ReadBinary command.
0x0007
NDEF file control TLV
0x04 (2)
T field
0x0008
0x06
L field
0x0009
0x0001
FileID
0x000B
0x0100
Maximum NDEF
file size in Byte
0x000D
0x00 (2)
Read access
0x000E
0x00 (2)
Write access
1. According to the reader command format SRTAG2KL will automatically align to the corresponding NFC
Forum version.
2. Delivery state.
Table 4. CC file layout for 1 NDEF file (continued)
File offset
Meaning
Value
Comments
Table 5. NDEF file layout
File offset
Byte 0
Byte 1
Byte 2
Byte 3
0x0000
NDEF message length
User data
User data
0x0004
User data
User data
User data
User data
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
0x00FC
...
...
...
User data



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