lri64 STMicroelectronics, lri64 Datasheet - Page 8

• Manufacturer Part Number: lri64
• Description: Memory Tag Ic At 13.56 Mhz, With 64-bit Unique Id And Worm User Area, Iso15693 And Iso18000-3 Mode 1 Compliant
• Manufacturer: STMicroelectronics

Description
1.1
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Memory mapping
The LRI64 is organized as 15 blocks of 8 bits as shown in
automatically write-protected after the first valid write access.
Figure 3.
The LRI64 uses the first 8 blocks (blocks 0 to 7) to store the 64-bit Unique Identifier (UID).
The UID is used during the anti-collision sequence (Inventory). It is written, by ST, at time of
manufacture, but part of it can be customer-accessible and customer-writable, on special
request.
The LRI64 has an AFI register, in which to store the Application Family Identifier value,
which is also used during the anti-collision sequence.
The LRI64 has a DSFID register, in which to store the Data Storage Format Identifier value,
which is used for the LRI64 Inventory answer.
The five following blocks (blocks 10 to 14) are Write-Once Read-Many (WORM) memory. It
is possible to write to each of them once. After the first valid write access, the block is
automatically locked, and only read commands are possible.
LRI64 memory mapping
Block
Addr
10
11
12
13
14
0
1
2
3
4
5
6
7
8
9
0 1 2 3 4 5 6 7
DSFID (WORM Area)
AFI (WORM Area)
UID 5 = IC_ID
WORM Area
WORM Area
WORM Area
WORM Area
WORM Area
UID 7 = E0h
UID 6 = 02h
UID 0
UID 1
UID 2
UID 3
UID 4
Figure
AI09741
3. Each block is
LRI64