RC522 RFID Card Reader Module 13.56MHz

RC522 RFID Card Reader Module 13.56MHz

The RC522 is a highly integrated 13.56MHz RFID reader/writer module based on the MFRC522 IC. It supports ISO/IEC 14443 A/MIFARE and NTAG protocols and communicates via SPI interface, making it easy to use with Arduino, ESP32, and other microcontrollers.

Key Features

• Operating frequency: 13.56MHz
• Supports ISO/IEC 14443 A/MIFARE and NTAG
• SPI interface (up to 10 Mbps)
• Operating voltage: 3.3V
• Onboard antenna — no external components needed
• Read/write capable
• ISO/IEC 14443 A framing and CRC error detection

Pin Configuration

• SDA, SCK, MOSI, MISO, IRQ, GND, RST, 3.3V

Applications

• Access control and attendance systems
• Arduino and ESP32 RFID projects
• Smart door locks
• Contactless payment prototypes