STMicroelectronics ST25TV02K-AD6H9

Overview

ST25TV02K-AD6H9 from STMicroelectronics is an NFC Forum Type 5 contactless RFID tag IC compliant with ISO/IEC 15693, featuring 2-Kbit EEPROM, tamper-detect capability, TruST25 digital signature, and dual-mode privacy protection (Kill and Untraceable modes). It operates at 13.56 MHz, supports fast read up to 53 Kbit/s, and delivers 60-year data retention with 100 k write cycles - deployed in secure product authentication and anti-counterfeiting systems.

For engineers reviewing the ST25TV02K-AD6H9 datasheet, ST25TV02K-AD6H9 pinout, ST25TV02K-AD6H9 application, or ST25TV02K-AD6H9 equivalent, key selection considerations include RF interface security architecture, tamper-detect loop implementation, EAS activation logic, and password-protected memory partitioning across three user areas.

Technical Context

The ST25TV02K-AD6H9 implements a fully autonomous ISO/IEC 15693-compliant RF front-end with internal tuning capacitance (23 pF / 99.7 pF), enabling direct connection to external antenna coils without external matching components. Its digital core integrates dedicated configuration registers for memory organization, access control, and tamper response - all secured via encrypted 32-bit or 64-bit passwords.

It features two independent tamper-detect pins (TD0/TD1) forming a configurable loop for open/short detection, and embeds a 16-bit event counter with anti-tearing. The TruST25 digital signature is stored in system configuration memory and verified during authentication to confirm chip origin and prevent cloning.

Key Specifications

Pinout & Package

ST25TV02K-AD6H9 is housed in a 5-pin DFN package (ECOPACK2, RoHS-compliant), designed for wafer-level integration into compact, sealed modules. The package exposes only RF and tamper-detect terminals - no VDD/VSS pins - as power is harvested entirely from the 13.56 MHz RF field.

Key Features

Applications

Equivalent & Alternatives

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

Compared with NT3H2211W0FHKH and N24RF04, ST25TV02K-AD6H9 uniquely combines ISO/IEC 15693 RF autonomy, tamper-detect hardware, and TruST25 cryptographic binding - making it irreplaceable where physical security and remote verifiability are mandatory.

Availability

ST25TV02K-AD6H9 is available at Aetrix Electronics and suitable for medical device authentication, premium consumables tracking, industrial calibration logging, and retail anti-counterfeiting applications requiring stable component supply and long-lifecycle support.

Supply support for ST25TV02K-AD6H9 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 management ICs, and secure connectivity solutions for industrial, automotive, and consumer markets.

ST25TV02K belongs to the ST25TV family of NFC/RFID tag ICs engineered specifically for secure, contactless product identification and anti-counterfeiting - emphasizing tamper resistance, cryptographic authenticity, and field-upgradable memory.

FAQ

Does ST25TV02K-AD6H9 require an external power supply?

No. ST25TV02K-AD6H9 is a passive RFID tag IC that harvests energy exclusively from the 13.56 MHz RF field generated by readers or NFC smartphones. It has no VDD or GND pins - power is derived from AC0/AC1 antenna coupling, enabling maintenance-free, battery-less operation in sealed enclosures.

How is the tamper-detect function implemented physically?

The tamper-detect function uses TD0 and TD1 as a two-terminal loop interface. A continuous conductive path (e.g., thin wire or printed trace) bridges these pins. An open circuit or short circuit between TD0 and TD1 is detected during RF field presence and sets the TAMPER_DETECT flag (register address 05h), which persists until next power cycle and can trigger irreversible actions like memory lock.

Can the Kill password be changed after initial programming?

Yes - the Kill password (PWD_KILL) is stored in system configuration memory and can be rewritten using the Write Password command (B1h) with password ID = 0h, provided the password is not locked. Once Lock Kill (B2h) is executed, further writes to PWD_KILL are blocked permanently, enforcing secure credential management in production environments.

What distinguishes Untraceable mode from Kill mode?

Kill mode permanently disables all RF communication - the tag becomes mute and invisible to any reader. Untraceable mode suppresses UID transmission during inventory commands while retaining full read/write functionality for authorized sessions - allowing continued use in private, authenticated contexts without exposing identity to casual scans.