STMicroelectronics ANT7-T-25DV64KC

Overview

ANT7-T-25DV64KC from STMicroelectronics is a ready-to-use antenna reference board for the ST25DV64KC dual-interface EEPROM, integrating a 14 mm × 14 mm, 13.56 MHz double-layer etched RF antenna, I²C test points, configurable RF-event-driven GPO, and analog energy harvesting (EH) output. It enables rapid evaluation of NFC-based memory access and passive power extraction in compact embedded systems.

For engineers reviewing the ANT7-T-25DV64KC datasheet, ANT7-T-25DV64KC pinout, ANT7-T-25DV64KC application, or ANT7-T-25DV64KC equivalent, this board supports NFC tag performance validation, I²C interface integration, energy harvesting feasibility testing, and RF event-triggered system control prototyping.

Technical Context

The board implements a functional interface between the ST25DV64KC IC and external systems via standardized I²C (SDA/SCL) and RF coupling through a tuned 13.56 MHz antenna. Its GPO terminal delivers logic-level outputs synchronized to RF field detection events, while the EH node provides rectified analog voltage usable for ultra-low-power wake-up or sensor biasing.

Designed for SELV compliance (<5 V, <15 W), the board operates as Class ES1/PS1 per EN62368-1 when externally powered. Gerber files are publicly available at st.com to support custom layout adaptation and antenna optimization.

Key Specifications

Availability

ANT7-T-25DV64KC is available at Aetrix Electronics and suitable for NFC tag evaluation, energy harvesting proof-of-concept, and I²C/NFC co-interface development requiring stable component supply and documented reference design support.

Supply support for ANT7-T-25DV64KC 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 analog/mixed-signal devices for industrial, automotive, and consumer applications.

This board belongs to ST's ST25 NFC ecosystem reference design series, developed specifically to accelerate adoption of dual-interface EEPROMs in space-constrained, battery-free, or energy-harvesting-enabled IoT endpoints.

FAQ

Does ANT7-T-25DV64KC require an external power supply to operate?

No - the board operates passively via RF energy coupling from a compatible ISO 15693 NFC reader. External power (≤5 V SELV) is optional and used only to enable I²C communication while the RF interface remains active. The EH output can power auxiliary circuits without batteries.

Can the GPO signal be reconfigured for different RF event triggers?

Yes - the GPO behavior (e.g., active-high on field detection, pulse on field removal) is controlled by configuration registers inside the ST25DV64KC IC. These settings are programmable over I²C or RF, allowing flexible synchronization with host system timing requirements.

Is the antenna impedance matched for standard NFC readers?

Yes - the 14 mm × 14 mm double-layer etched antenna is tuned to 13.56 MHz with impedance matching optimized for interoperability with ST's ST25R series readers and other ISO 15693-compliant field generators, achieving consistent coupling across ±10% frequency tolerance.

Where can I obtain the PCB layout files for customization?

Gerber files and full schematic documentation are freely available for download from STMicroelectronics' official website at www.st.com under the ANT7-T-25DV64KC product page or DB4519 data brief (Rev 3, April 2022).