NXP Semiconductors
SL2S2602
ICODE SLIX2
SL2S2602 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2017. All rights reserved.
Product data sheet Rev. 4.1 — 25 July 2017
COMPANY PUBLIC 276341 11 / 55
9 Functional description
9.1 Block description
The ICODE SLIX2 IC consists of three major blocks:
• Analog RF interface
• Digital controller
• EEPROM
The analog section provides stable supply voltage and demodulates data received
from the reader for processing by the digital section. The analog section’s modulation
transistor also transmits data back to the reader.
The digital section includes the state machines, processes the protocol and handles
communication with the EEPROM.
The label requires no internal power supply. Its contactless interface generates the
power supply and the system clock via the resonant circuitry by inductive coupling to
the interrogator. The interface also demodulates data that are transmitted from the
interrogator to the ICODE Label, and modulates the electromagnetic field for data
transmission from the ICODE Label to the interrogator.
Data are stored in a non-volatile memory (EEPROM).
9.2 Memory organization
The 2560 bit user accessible EEPROM memory is divided into 80 blocks. A block is the
smallest access unit. Each block consists of 4 bytes (1 block = 32 bits). Bit 0 in each
byte represents the least significant bit (LSB) and bit 7 the most significant bit (MSB),
respectively.
The entire memory is divided into 3 parts:
• Configuration area
– Within this part of the memory all required information is stored, such as UID, write
protection, access control information, passwords, AFI and EAS and originality
signature. This memory area cannot be directly accessed.
• User memory
– Within the 2528 bit memory (79 blocks) area the user data are stored. Direct read/
write access to this part of the memory is possible depending on the related security
and write protection conditions.
• 16 bit counter
– The last block of the EEPROM memory (block 79) contains the 16 bit counter and the
counter password protection flag.
