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1.1

General

1.2

System Description

Reader

Tag-It HF-I Transponder

Antenna

1.3

Product Description

1.4

Functional Description

General

The Tag-it HF-I Pro Transponder IC is part of TI’s 13.56 MHz product family, which is based on the

ISO/IEC 15693 standard for contactless integrated circuit cards (vicinity cards) and ISO/IEC 18000-3

standard for item management. The Tag-it HF-I Pro Transponder IC builds the basis for various available

inlay shapes, which are used as consumable smart labels in markets requiring quick and accurate

identification of items, such as:

• asset tagging

• electronic ticketing

• anti-counterfeit prevention

• building access badges

User data is written to and read from memory blocks using a non-volatile EEPROM silicon technology.

Each block is separately programmable by the user and can be locked to protect data from modification.

Once the data has been ‘locked’ it can only be changed by the password protected write command.

Multiple transponders, which appear in the Readers RF field, can be identified, read from and written to by

using the Unique Identifier (UID), which is programmed and locked at the factory and can not be changed.

For operation, a reader with antenna is required to send a command to the transponder and to receive its

response (see Figure 1-1). The command of the Reader can be either in addressed or non-addressed

mode. The Transponder does not transmit data until the reader sends a request (Reader talks first

principle).

Figure 1-1. RFID System With Reader, Antenna, and Tag-it HF-I Transponder

The Tag-it HF-I Pro Transponder IC is compliant to the ISO/IEC 15693 and ISO/IEC 18000-3 standard. To

build a complete transponder, the Tag-it HF-I Pro Transponder IC has to build a resonance circuit with the

antenna it is assembled on (e.g., an etched aluminum antenna).

The Tag-it HF-I Pro Transponder IC is a low-power, full-duplex Transponder IC for use with passive

contactless identification transponder systems.

The transponder IC is designed to operate with a 13.56 MHz carrier frequency. The ISO standard defines,

for some communication parameters, several modes in order to meet different international radio

regulations and different application requirements. Therefore, communication between the reader and the

transponder (Down-Link communication) takes place using ASK modulation index between 10% and 30%

or 100% and datacoding (pulse position modulation) ‘1 out of 4’ or ‘1 out of 256’.

8

Introduction

SCBU045 (11-09-21-065) – October 2007

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