HF 13.56 MHzTexas Instruments

Tag-it HF-I Standard

Name: Texas Instruments Tag-it HF-I Standard
Brand: Texas Instruments

The Texas Instruments Tag-it HF-I Standard is an HF 13.56 MHz RFID tag IC, with 2048 bits (256 bytes) user memory organized in 64 blocks of 32 bits (4 bytes) each, plus 64-bit UID, DSFID, AFI, operating at 13.56 MHz, under ISO/IEC 15693 ISO/IEC 18000-3.

ISO 15693/18000-3, 256-bit standard transponder IC

Official Datasheet ↗

Frequency

13.56 MHz

Protocol

ISO/IEC 15693, ISO/IEC 18000-3

Memory

2048 bits (256 bytes) user memory organized in 64 blocks of 32 bits (4 bytes) each, plus 64-bit UID, DSFID, AFI

Interface

RF (contactless)

Temp Range

-40°C to +85°C operating, -40°C to +125°C storage

Form Factor

Wafer (200 mm / 8 inch diameter, 265 µm thick after grinding), die size 1296 µm × 1116 µm, bumped (Ni/Au chemical bumps, 25 µm height)

Full Specifications

Manufacturer	Texas Instruments
Frequency Category	HF 13.56 MHz
Frequency	13.56 MHz
Protocol	ISO/IEC 15693, ISO/IEC 18000-3
Memory	2048 bits (256 bytes) user memory organized in 64 blocks of 32 bits (4 bytes) each, plus 64-bit UID, DSFID, AFI
Interface	RF (contactless)
Temperature Range	-40°C to +85°C operating, -40°C to +125°C storage
Form Factor	Wafer (200 mm / 8 inch diameter, 265 µm thick after grinding), die size 1296 µm × 1116 µm, bumped (Ni/Au chemical bumps, 25 µm height)
Security	Individual block locking (user lock and factory lock per block), irreversible write protection

Engineering Brief

The Tag-it HF-I (TMS37112) is a passive HF RFID transponder IC fully compliant with ISO 15693 and ISO 18000-3 standards, operating at 13.56 MHz. It features 2048 bits (256 bytes) of user EEPROM organized in 64 lockable blocks, factory-programmed 64-bit UID, and anti-collision support for simultaneous tag reading. The IC supports all ISO 15693 communication modes (ASK/FSK, high/low data rate, 1-of-4/1-of-256 pulse position modulation) with configurable modulation depth. Delivered as bumped wafers or sawn dies on frame, it requires assembly with an external antenna and optional resonance capacitor to form a complete transponder for item-level tagging applications.

Typical Applications

Standards & Compliance

Frequently Asked Questions

How much user memory does the Tag-it HF-I Standard have?

The Tag-it HF-I Standard provides 2048 bits (256 bytes) of user EEPROM memory organized in 64 blocks of 32 bits (4 bytes) each. Each block can be individually locked for permanent write protection.

Is the Tag-it HF-I Standard compatible with ISO 15693?

Yes, the Tag-it HF-I Standard (TMS37112) is fully compliant with both ISO 15693 and ISO 18000-3 standards. It supports all ISO 15693 communication modes including ASK/FSK modulation, high/low data rates, and 1-of-4/1-of-256 pulse position modulation.

Does the Tag-it HF-I support anti-collision for reading multiple tags?

Yes, the Tag-it HF-I Standard supports anti-collision functionality, enabling simultaneous reading of multiple tags in the field using the ISO 15693 anti-collision protocol with its factory-programmed 64-bit unique identifier (UID).

What security features does the Tag-it HF-I chip have?

The Tag-it HF-I Standard offers individual block-level security with both user lock and factory lock capabilities per block. Once locked, the write protection is irreversible, providing permanent data security for locked blocks.

What form factor is the Tag-it HF-I Standard available in?

The Tag-it HF-I Standard is delivered as bumped wafers or sawn dies on frame, requiring assembly with an external antenna and optional resonance capacitor to create a complete RFID transponder.

What operating frequency does the Tag-it HF-I use?

The Tag-it HF-I Standard operates at 13.56 MHz in the high-frequency (HF) RFID band. It is a passive transponder IC that draws power from the RF field generated by the reader.

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