STMicroelectronics ST25TV-ESEAL

Overview

ST25TV-ESEAL from STMicroelectronics is a ready-to-use NFC/RFID demonstration board built around the ST25TV02K NFC Forum Type 5 tag IC in UFDFPN5 ECOPACK2® package, featuring integrated Class 3 single-layer inductive antenna, tamper-detect capability, and TruST25™ digital signature for secure authentication. It enables rapid evaluation of contactless data exchange and physical integrity verification in anti-tamper packaging applications.

For engineers reviewing the ST25TV-ESEAL datasheet, ST25TV-ESEAL pinout, ST25TV-ESEAL application, or ST25TV-ESEAL equivalent, this board supports ISO/IEC 15693 RF link validation, NFC Forum Type 5 interoperability testing, tamper-event logging via TD pin assertion, and TruST25™ signature verification using Android smartphones or CR95HF-A demo platforms.

Technical Context

The ST25TV-ESEAL implements a passive NFC tag interface compliant with ISO/IEC 15693 and NFC Forum Type 5 specifications, operating at 13.56 MHz with internal 23.5 pF tuning capacitance for optimized antenna coupling. Its tamper-detect circuitry monitors mechanical breach via conductive trace interruption on the PCB.

TruST25™ provides hardware-based digital signature generation using ECC-P256 cryptography, enabling cryptographic proof of tag authenticity and data integrity without external MCU involvement. The board requires no external power - all operation is powered by the RF field during reader interrogation.

Key Specifications

Availability

ST25TV-ESEAL is available at Aetrix Electronics and suitable for anti-tamper logistics tracking, pharmaceutical packaging verification, high-value equipment seal monitoring, and NFC-enabled warranty activation requiring stable component supply and rapid prototyping support.

Supply support for ST25TV-ESEAL 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 ST25TV product line targets secure, battery-free NFC tagging for authentication, tamper evidence, and data logging - optimized for integration into seals, labels, and packaging substrates.

FAQ

Does ST25TV-ESEAL require an external power source?

No. The ST25TV-ESEAL is fully passive and derives all operating power from the RF field generated by an ISO/IEC 15693-compatible reader or NFC smartphone. No battery, wiring, or external supply is needed - enabling maintenance-free, long-term deployment in sealed environments.

How is tamper detection implemented on this board?

Tamper detection uses a dedicated conductive trace routed across the PCB surface. Physical breach (e.g., cutting, peeling, or lifting) breaks the trace, causing the ST25TV02K's TD pin to assert a permanent flag stored in its protected memory. This state persists even after RF power removal.

Can ST25TV-ESEAL be used with standard Android NFC apps?

Yes - it supports NDEF message formatting and is readable by any Android device with NFC enabled and compatible NFC TagInfo or similar apps. TruST25™ signatures require ST's official ST25 NFC app or custom implementation using ST's public ECC-P256 verification libraries.

Is antenna tuning required before use?

No. The board integrates a factory-tuned 23.5 pF capacitor matched to its Class 3 etched antenna, delivering optimal resonance at 13.56 MHz. No user adjustment or external components are needed for functional evaluation or integration into standard NFC reader ecosystems.