RC522 RFID Module

The RC522 RFID Module provides reliable and efficient proximity identification at 13.56 MHz. Designed for secure access control and data transfer tasks, this compact module supports common RFID standards and a range of communication interfaces to simplify integration with microcontroller projects and embedded systems. 13.56 MHz operating frequency for compatibility with a wide selection of RFID tags and readers. ISO/IEC 14443A compliant to enable secure communication with standard RFID cards. Multiple communication interfaces including SPI, I2C, and UART to accommodate varied hardware configurations. High data transfer rate up to 10 Mbps to support quick and responsive identification processes. Compact 40mm x 60mm form factor for easy embedding into space‑constrained designs. Compared to older modules, the RC522 improves data transmission speed and incorporates enhanced security protocols that help reduce integration time and complexity. Its multi-interface design lets developers select the interface best suited to their system architecture, whether minimizing wiring, maximizing throughput, or simplifying firmware. Engineered for efficiency, the RC522 combines robust signal processing with low power consumption to maintain accurate reads in typical operational environments while supporting battery‑powered applications where longevity matters.