STMicroelectronics ST25TV02K-AD6G3

Overview

ST25TV02K-AD6G3 from STMicroelectronics is an NFC Forum Type 5 contactless RFID tag IC compliant with ISO/IEC 15693, featuring 2-Kbit EEPROM, tamper-detect capability (TD0/TD1), TruST25 digital signature, and dual-area password protection (32-bit per area). It operates at 13.56 MHz, supports Fast Read up to 53 Kbit/s, and delivers 60-year data retention for secure product authentication in high-value packaging.

For engineers reviewing the ST25TV02K-AD6G3 datasheet, ST25TV02K-AD6G3 pinout, ST25TV02K-AD6G3 application, or ST25TV02K-AD6G3 equivalent, key selection factors include RF-based memory access timing, tamper-loop interface design, encrypted area-level read/write control, and EAS-enabled anti-theft integration in consumer electronics and pharmaceutical traceability systems.

Technical Context

The ST25TV02K-AD6G3 implements a fully autonomous RF-powered architecture with no external power supply required. Its ISO/IEC 15693-compliant transceiver handles all modulation schemes (100% ASK, 10% ASK), subcarrier modes (1 of 256, 1 of 4), and data rates (26.48 kbit/s standard, 53 kbit/s Fast Read). The internal tuning capacitance (23 pF / 99.7 pF) enables direct antenna matching without external components.

Memory management is split into user memory (64 blocks × 4 bytes = 2 Kbits) and system configuration area, with dedicated Read/Write Configuration commands secured by a 32-bit PWD_CFG. Tamper detection uses differential loop sensing on TD0/TD1 pins, triggering irreversible state changes upon open/short events - a hardware-enforced security primitive independent of RF session state.

Key Specifications

Pinout & Package

ST25TV02K-AD6G3 is supplied in a 5-pin DFN package (ECOPACK2, RoHS-compliant), optimized for direct die bonding or wafer-level integration. The package exposes only RF and tamper interface pins - no VDD/GND required.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar NFC/RFID tag applications.

Compared with NT3H2111W0FHKH and N24RF04, the ST25TV02K-AD6G3 uniquely combines tamper-loop hardware, TruST25 cryptographic binding, and EAS flag in a single-passive-chip solution - making it the only choice where physical breach detection and clone resistance are non-negotiable.

Availability

ST25TV02K-AD6G3 is available at Aetrix Electronics and suitable for pharmaceutical serialization, luxury goods authentication, industrial service logging, and retail inventory tracking requiring stable component supply across multi-year production programs.

Supply support for ST25TV02K-AD6G3 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing microcontrollers, sensors, power ICs, and secure NFC solutions for industrial, automotive, and consumer markets.

The ST25 family targets secure identification and data integrity in contactless applications, with ST25TV series specifically engineered for tamper-resistant product authentication, anti-counterfeiting, and trusted supply chain traceability.

FAQ

What antenna design is required for optimal performance?

The ST25TV02K-AD6G3 requires a tuned LC circuit resonating at 13.56 MHz, with total capacitance matching either 23 pF or 99.7 pF depending on coil inductance. Recommended antenna inductance is 1–2 µH; impedance matching networks are unnecessary due to integrated tuning capacitors. Layout must minimize parasitic capacitance between AC0/AC1 traces.

How does the tamper detect feature behave after activation?

When the TD0/TD1 loop opens or shorts, the tamper detect register (address 05h in system configuration area) flips to '1' and remains latched permanently - even after power cycle or RF field removal. This state cannot be cleared or reset, providing immutable forensic evidence of physical intrusion.

Can the Kill mode be reversed after execution?

No. Once the Kill command (A6h) is successfully executed with the correct PWD_KILL, the device enters mute mode permanently: it ceases all RF responses, including UID transmission, and becomes electrically inert. This is a hardware-enforced irreversible action - no recovery mechanism exists.

What distinguishes TruST25 from standard UID-based authentication?

TruST25 generates a unique ECDSA digital signature tied to the chip's UID and selected memory contents - verified externally using ST's public key. Unlike static UID, it proves the tag is genuine and its data has not been altered, preventing UID cloning attacks that compromise basic NFC authentication.