Philips Semiconductors

Product Specification Rev. 3.1

February 2005

Functional Specification

Standard Label IC SL2 ICS20

6

3 FUNCTIONAL DESCRIPTION

3.1 Block Description

32 Bit

Analogue RF Interface

Digital Control

EEPROM

Sequencer

Charge Pump

VDD

Data

In

Data

Out

Clock

R/W

Anticollision

Read/Write

Control

Access

Control

EEPROM Interface

Control

RF Interface

Control

PAD

VREG

V

RECT

DEMOD

Cres

MOD

PAD

CLK

ISO/IEC 15693

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 I•CODE Label, and modulates the

electromagnetic field for data transmission from the I•CODE Label to the interrogator.

Data are stored in a non-volatile memory (EEPROM). The EEPROM has a memory capacity of 1024 bit and

is organised in 32 blocks consisting of 4 bytes each (1 block = 32 bits). The higher 28 blocks contain user

data and the lowest 4 blocks contain the unique identifier, the write access conditions and special data like

AFI and DSFID.