Reliable field generation and robust reception are central to NFC charging, payment, and access-control designs, where the antenna may sit behind metalwork, plastic, or noisy displays. The ST25R300 NFC reader supports NFC initiator, NFC target, reader, and card-emulation modes, so one design can cover charging, authentication, and tag interaction tasks.
Designed for EMVCo® proximity coupling device (PCD) 3.2a analog and digital compliance, the ST25R300 helps engineers to shorten certification work in contactless payment terminals. The analog front end (AFE) supports operation where an antenna sits behind a noisy liquid crystal display (LCD), a common constraint in modern point-of-sale terminals.
High radio frequency (RF) output power and dynamic power output (DPO) let the NFC reader drive antennas efficiently while keeping field strength within required limits. Active wave shaping (AWS) helps to reduce signal overshoot and undershoot, supporting monotonicity requirements in EMVCo and NFC Forum testing.
The noise suppression receiver (NSR) improves reception in electrically noisy environments, including payment terminals with display noise or disturbance on supply lines. Automatic antenna tuning (AAT) helps to compensate for changes in antenna size, enclosure material, or coupling conditions across end-equipment designs. For NFC wireless charging (WLC), the same analog performance supports poller functions used by wireless chargers and WPC Qi out-of-band (OOB) communication.
Part Number: X-NUCLEO-NFC12A1
The X-NUCLEO-NFC12A1 from STMicroelectronics provides an STM32 Nucleo expansion board for evaluating the ST25R300 NFC reader in card-reader, host card-emulation, and NFC charging applications. The expansion board supports all five NFC Forum tag types in reader mode. It supports ISO/IEC 14443 type A/B, ISO/IEC 15693 single-subcarrier, and ISO/IEC 18092 communication protocols.
The board has an Arduino® UNO R3 connector, six general-purpose LEDs, and a firmware library compatible with STM32Cube. Sample firmware for the ST25R300 helps engineers start development on STM32 Nucleo host boards.
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