STMicroelectronics X-NUCLEO-NFC09A1

Overview

X-NUCLEO-NFC09A1 from STMicroelectronics is an NFC card reader expansion board built around the ST25R100 HF reader/NFC initiator IC, supporting ISO/IEC 14443A/B and ISO/IEC 15693 protocols, with a 47 mm × 34 mm on-board PCB antenna, six user LEDs, and Arduino UNO R3 pin compatibility for STM32 Nucleo development.

For engineers reviewing the X-NUCLEO-NFC09A1 datasheet, X-NUCLEO-NFC09A1 pinout, X-NUCLEO-NFC09A1 application, or X-NUCLEO-NFC09A1 equivalent, this board delivers certified NFC reader functionality with integrated tuning circuitry, low-power wake-up capability, and STM32Cube-compatible firmware library support for rapid prototyping of contactless identification systems.

Technical Context

The board implements the ST25R100 in reader mode with full frame coding/decoding for NFC Forum Type 1–5 tags and proximity/vicinity RFID applications. It integrates a 13.56 MHz four-turn PCB antenna with EMI filtering and impedance-matching network using discrete capacitors and inductors (e.g., C302–C313, L300–L301).

Communication with host MCU occurs via SPI (SCLK_MCU, MOSI_MCU, MISO_MCU, /SS_MCU) and includes IRQ_MCU for interrupt-driven tag detection. The ST25R100's embedded RC oscillator and wake-up timer enable autonomous low-power tag presence polling without MCU intervention.

Key Specifications

Availability

X-NUCLEO-NFC09A1 is available at Aetrix Electronics and suitable for NFC-enabled access control systems, contactless payment terminals, industrial asset tagging, and secure device onboarding requiring stable component supply and long-term design-in support.

Supply support for X-NUCLEO-NFC09A1 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, analog ICs, MEMS, and power devices for industrial, automotive, and consumer applications.

The X-NUCLEO series targets rapid prototyping and evaluation of STM32-based solutions, with the NFC09A1 specifically engineered to accelerate development of standards-compliant, low-power NFC reader applications across IoT and secure identification use cases.

FAQ

Does X-NUCLEO-NFC09A1 support NFC peer-to-peer (P2P) mode?

No. The board operates exclusively in reader/initiator mode using the ST25R100 IC, which does not implement NFCIP-1 or LLCP stack for P2P communication. It supports only tag reading/writing and card emulation detection per ISO 14443 and ISO 15693 standards.

Can it drive an external antenna in addition to the onboard one?

Yes. The ST25R100 supports dual-antenna configuration in single-ended mode, and the board provides test points (TP200, TP204, TP208–TP210) and unpopulated footprints (J302, J303, J304) to connect and tune an external antenna while retaining the onboard one.

Is Arduino UNO R3 connector pinout electrically identical to STM32 Nucleo headers?

Yes. The board uses standard Arduino UNO R3 mechanical and electrical pin mapping (e.g., D0–D15, A0–A5, +3.3 V, GND), ensuring direct plug-and-play compatibility with STM32 Nucleo-64 and Nucleo-144 boards that feature Arduino connectors.

What is the maximum read distance achievable with the onboard antenna?

Typical read distance is 40–50 mm for ISO 14443A cards (e.g., MIFARE Classic) under ideal conditions. Performance depends on tag type, orientation, and environmental RF noise; the board's matching network (C300–C313, L300–L301) is tuned for optimal coupling within this range.