STMicroelectronics ST25TV02K-AD6H3

Overview

ST25TV02K-AD6H3 from STMicroelectronics is a dynamic NFC/RFID tag IC with 2-Kbit EEPROM, dual I²C and ISO/IEC 15693 contactless interfaces, 1.8–5.5 V supply, 40-year data retention, and integrated 28.5 pF tuning capacitance - deployed in smart labels, asset tags, and industrial sensor nodes requiring secure, battery-free memory access.

For engineers reviewing the ST25TV02K-AD6H3 datasheet, ST25TV02K-AD6H3 pinout, ST25TV02K-AD6H3 application, or ST25TV02K-AD6H3 equivalent, key selection criteria include RF/I²C fast transfer mode (256-byte mailbox), configurable GPO interrupt behavior, energy harvesting analog output (V_EH), and multi-level password protection across four user memory areas.

Technical Context

The ST25TV02K-AD6H3 implements a dual-interface architecture: an I²C slave interface (up to 1 MHz) for wired host control and an ISO/IEC 15693-compliant RF interface supporting 13.56 MHz carrier, all modulation/coding modes, and up to 53 Kbit/s custom fast read. It integrates a 256-byte volatile mailbox buffer enabling synchronized data exchange between contact and contactless domains.

Its analog front end includes internal 28.5 pF tuning capacitance, energy harvesting output (V_EH), and configurable GPO with open-drain or CMOS variants - triggered by RF field change, memory write completion, or Fast Transfer events. Memory protection uses three 64-bit RF passwords and one 64-bit I²C password per user area.

Key Specifications

Pinout & Package

ST25TV02K-AD6H3 is housed in an 8-pin UFDFPN package (2.0 × 2.0 mm, 0.4 mm pitch) with wettable flanks, RoHS-compliant ECOPACK2 construction. Pin functions are validated per STMicroelectronics DS10925 Rev 11.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ST25DV04K, ST25TV02K-AD6H3 offers identical core functionality in a smaller footprint but omits LPD for ultra-low-power control; versus NT3H2111, it delivers superior system integration via on-die tuning and energy harvesting - reducing external components and enabling self-powered features.

Availability

ST25TV02K-AD6H3 is available at Aetrix Electronics and suitable for smart industrial labels, secure asset tracking tags, and IoT sensor node configuration requiring stable component supply, full NFC Forum certification, and extended temperature operation.

Supply support for ST25TV02K-AD6H3 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, specializing in intelligent power, sensing, and connectivity solutions for industrial, automotive, and consumer markets.

The ST25TV series targets secure, maintenance-free identification and configuration in harsh or inaccessible environments - designed specifically for applications where battery replacement is impractical and wireless programmability is essential.

FAQ

What is the maximum RF data rate supported by ST25TV02K-AD6H3?

The device supports a custom fast read mode delivering up to 53 Kbit/s over ISO/IEC 15693 - achieved through optimized command framing and internal buffering. Standard ISO/IEC 15693 modes operate at 26.48 Kbit/s (high data rate) or 6.62 Kbit/s (low data rate), both fully compliant and interoperable with legacy readers.

Does ST25TV02K-AD6H3 require external tuning capacitors for the RF antenna?

No. The device integrates 28.5 pF of tuning capacitance internally, eliminating the need for external capacitors in most antenna designs. This simplifies layout, improves manufacturing repeatability, and reduces total solution cost - though fine-tuning may still be performed with optional external components for edge-case impedance matching.

How is memory protection implemented across the four user areas?

Each of the four user memory areas can be individually configured for read and/or write protection using dedicated 64-bit passwords: three distinct RF passwords and one I²C password. Passwords are stored in protected system configuration registers and enforced at the hardware level - unauthorized access attempts result in silent failure or error code 0Fh without exposing memory contents.

Can the GPO pin drive an LED directly without external circuitry?

No. The GPO is an open-drain output requiring an external pull-up resistor (≥4.7 kΩ) to V_CC. While it can sink up to 4 mA, driving an LED directly would require current-limiting resistance and proper voltage margining - best practice is to use GPO as a logic-level interrupt signal to trigger a dedicated driver stage or MCU GPIO.