ST25R3920

The ST25R3920 supports ISO/IEC 14443-A/B, ISO/IEC 15693, ISO/IEC 18092 (NFCIP-1), all NFC Forum modes (NFC-A/B/F/V), and FeliCa. This comprehensive protocol support enables communication with virtually all NFC and HF RFID tag types.

Yes, the ST25R3920 integrates a hardware AES-128 encryption engine and supports hardware authentication mechanisms. These security features protect data transmission and enable secure reader applications in payment terminals and access control systems.

AAT (Automatic Antenna Tuning) is an advanced analog feature that automatically optimizes the antenna matching for varying environmental conditions and tag loads. This ensures consistent read performance and extended read range without manual calibration, particularly valuable in industrial and mobile reader applications.

The ST25R3920 communicates via SPI (Serial Peripheral Interface) and also provides a parallel interface option. It includes interrupt outputs for event notification, enabling efficient integration with host processors in embedded systems.

Yes, the ST25R3920 features a low-power wake-up mode specifically designed for battery-operated applications. Combined with its advanced power management capabilities, it is well-suited for portable readers, handheld terminals, and mobile access control devices.

The ST25R3920 is a higher-performance variant with enhanced analog features including Automatic Antenna Tuning (AAT) and Active Wave Shaping (AWS), better suited for demanding industrial and payment applications. The ST25R3916 is a more cost-effective option with slightly reduced analog performance but still comprehensive protocol support.