SL2S2002_SL2S2102_SDS

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© NXP B.V. 2011. All rights reserved.

Product short data sheet

PUBLIC

Rev. 3.2 — 10 January 2011

198332

5 of 13

NXP Semiconductors

SL2S2002; SL2S2102

ICODE SLIX

7.

Functional description

7.1 Block description

The ICODE SLIX IC consists of three major blocks:

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).

7.2 Memory organization

The 1024 bit EEPROM memory is divided into 32 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 memory is divided into 2 parts:

Within this part of the memory all required information is stored, such as UID, write

protection, access control information, passwords, AFI and EAS. This memory area

cannot be directly accessed.

Within the 896 bit memory area the user data are stored. Direct read/write access to

this part of the memory is possible depending on the related write protection

conditions.