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AN3408 데이터시트(PDF) 18 Page - STMicroelectronics

부품명 AN3408
상세설명  The NFC technology allows accessing standard
PDF  38 Pages
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제조업체  STMICROELECTRONICS [STMicroelectronics]
홈페이지  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

AN3408 데이터시트(HTML) 18 Page - STMicroelectronics

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Example of NDEF record
AN3408
18/38
DocID018867 Rev 4
4.1.1
Memory mapping for text record type on LRI2K
Each message character is written in hexadecimal.
4.2
URI record
Example 2: This example defines an NDEF message which is made of one single record.
The message is the URL “http://www.st.com”.
The record header is 0xD1.
In this case, the payload is 0x01 and “st.com”.
Table 24. LRI2K memory mapping for “ISO15693 as NFC tag” NDEF message
RF block
Byte number
0
1
2
3
0
CC field
0xE1
0x10
0x20
0x00
1
User data field
0x03
0x1A
0xD1
0x01
2
0x16
0x54
0x02
0x65[e]
3
0x6E[n]
0x49[I]
0x53[S]
0x4F[O]
4
0x31|1]
0x35[5]
0x36[6]
0x39[9]
5
0x33[3]
0x20[ ]
0x61[a]
0x73[s]
6
0x20[ ]
0x4E[N]
0x46[F]
0x43[C]
7
0x20[ ]
0x74[t]
0x61[a]
0x67[g]
8
0xFE
Table 25. URI record message structure
NDEF data
T
L
V as defined into URI Record Definition document(1)
1.
Refer to [URI] document
– on page 1.
Terminator
0x03
0x0B
0xD1
0x01
0x07
0x55
0x01
“st.com”
0xFE
Type
NDEF
message
TLV
Length (11 bytes)
Record head
Type length
Payload length (07 bytes)(2)
2.
Payload length = URI identifier + UTF-8 string length = 1 + 6 = 7d.
Type (U value) for URI record type
URI header identifier (http://www.)
URI body Identifier in UTF-8 string
Terminator TLV



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