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XRA00 bảng dữ liệu(PDF) 18 Page - STMicroelectronics

tên linh kiện XRA00
Giải thích chi tiết về linh kiện  UHF, EPCglobal, Contactless Memory IC 96 bit ePC with Inventory and Kill Function
PDF  40 Pages
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nhà sản xuất  STMICROELECTRONICS [STMicroelectronics]
Trang chủ  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

XRA00 bảng dữ liệu(HTML) 18 Page - STMicroelectronics

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XRA00
18/40
MEMORY MAPPING
The XRA00 is divided into 8 blocks of 16 bits. The
device is read bit by bit and written to on a block by
block basis (16 bits at a time). The XRA00 memory
map is shown in Figure 25.
In the XRA00, the first block is used to store the
CRC value as defined in the ePC specification.
The next 6 blocks are used to store the 96-bit ePC
code that is used during the inventory sequence.
The last block is divided into two 8-bit areas, one
that contains the Kill Code and the other that con-
tains the Lock Code used to protect the memory
data contents.
Figure 25. XRA00 Memory Map
Note: 1. ST may write part of the ePC code.
USER mode
After programming the ePC information, the
XRA00 can be locked. Once locked, the XRA00
answers to anti-collision and scroll commands
only. The ERASEID, PROGRAMID and VERIFY-
ID commands are de-activated.
Row
Address
15
0
EPC mapping
Write Lockable User Area
Write Lockable User Area
Write Lockable User Area
Write Lockable User Area
Write Lockable User Area
Write Lockable User Area
Write Lockable User Area
Lock Code
Kill Code
0
1
2
3
4
5
6
7
00D
16D
32D
48D
64D
80D
96D
112D
CRC
EPC Data
EPC Data
EPC Data
EPC Data
EPC Data
EPC Data
ai10764



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