Rockwell Automation 56RF RFID System User Manual - Manual (Page 23)

Rockwell Automation Publication 56RF-UM001A-EN-P - October 2011 23
RFID Components Chapter 2
Smart Label IC – Lean (SLI-L)
The SLI-L is used in applications that require smaller memory size. The 512 bit
EEPROM memory is divided into 16 blocks. A block is the smallest access unit.
Each block consists of 4 bytes (1 block = 32 bits). Four blocks are summed up to
one page. Bit 0 in each byte represents the least significant bit (LSB) and bit 7 the
most significant bit (MSB), respectively.
The memory is divided into two parts:
• Configuration Area: This memory area stores all required information,
such as UID, write protection, passwords, etc. Direct access to this
memory area is not possible.
• User Memory: This memory area stores user data. Direct read/write
access to this part of the memory is possible depending on the related write
protection conditions.
The table below shows the memory organization of an SLI-L tag.
Table 13 - SLI-L Memory Organization
Page Block Byte 0 Byte 1 Byte 2 Byte 3 Description
-2 -8 Configuration area for internal use
-7
-6
-5
-1 -4
-3
-2
-1
0 0 User Memory
2 pages
4 blocks per page
4 bytes per block
Total: 32 bytes
1
2
3
4
5
6
7