STMicroelectronics ST25TV512-AP6F9

Overview

ST25TV512-AP6F9 from STMicroelectronics is an NFC Forum Type 5 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 contactlessly 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 ST25TV512-AP6F9 datasheet, ST25TV512-AP6F9 pinout, ST25TV512-AP6F9 application, or ST25TV512-AP6F9 equivalent, key selection considerations include RF interface security architecture, tamper-detect loop implementation, EAS integration, and three-area memory protection with encrypted 32-bit passwords for Area 1/2 and 64-bit for two-area configuration.

Technical Context

The ST25TV512-AP6F9 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 hardware for TruST25 signature generation, 16-bit event counter with anti-tearing, and configurable kill/untraceable mode activation via encrypted password verification.

Memory access is strictly block-oriented (4-byte blocks), with user memory partitioned into three areas (Block 0, Blocks 1–7, Blocks 8–15) or two areas (Block 0, Blocks 1–15), each independently protected by encrypted passwords and permanent block-level locks. System configuration registers - including AFI, DSFID, UID, and tamper-detect status - reside in a write-protected EEPROM area secured by a separate 32-bit configuration password.

Key Specifications

Pinout & Package

ST25TV512-AP6F9 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-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 applications.

Compared with ST25TV02K-AP6F9, the ST25TV512-AP6F9 offers identical functionality but is designated for distinct traceability channels; versus NT3H2221, it trades NDEF convenience for hardened security primitives (tamper loop, TruST25, Kill mode) essential in regulated industries.

Availability

ST25TV512-AP6F9 is available at Aetrix Electronics and suitable for pharmaceutical serialization, industrial equipment authentication, luxury goods provenance, and smart packaging requiring stable component supply and long-lifecycle support.

Supply support for ST25TV512-AP6F9 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, power management ICs, sensors, and secure connectivity solutions for industrial, automotive, and IoT markets.

The ST25TV family targets high-assurance identification applications, integrating hardware-rooted security (TruST25), physical tamper resistance, and regulatory-compliant privacy modes - purpose-built for anti-counterfeiting, traceability, and GDPR-aligned data handling.

FAQ

What is the function of the TD0 and TD1 pins?

TD0 and TD1 form a dedicated tamper-detect loop interface that monitors electrical continuity between them. An open circuit or short triggers irreversible state change, disabling RF response until power cycle. This hardware feature supports IEC 62443-compliant anti-tampering and is factory-tested for reliability across −40 °C to +85 °C.

How does the Kill mode differ from Untraceable mode?

Kill mode permanently mutes the tag - it ceases all RF communication and cannot be reactivated. Untraceable mode dynamically suppresses UID transmission during inventory while retaining full read/write capability upon session establishment with correct password. Both require presentation of the encrypted PWD_KILL to activate.

Can the ST25TV512-AP6F9 be used without an external antenna coil?

No. The ST25TV512-AP6F9 requires an external LC antenna coil connected between AC0 and AC1 to harvest energy and communicate. It contains no integrated inductor or power source. Internal tuning capacitance (23 pF / 99.7 pF) sets default resonance but final tuning depends on coil inductance and PCB layout parasitics.

What memory protection options are available for user data?

User memory supports three-area (Block 0, Blocks 1–7, Blocks 8–15) or two-area (Block 0, Blocks 1–15) partitioning. Each area uses independent 32-bit encrypted passwords (or combined 64-bit for two-area mode), with configurable read/write permissions per AiSS register. Additionally, any 4-byte block can be permanently locked via Lock Single Block command - irreversible and password-free.