The RC522 is a 13.56MHz RFID module that is based on the MFRC522 controller. It is commonly used in attendance systems and other object identification applications.
- 13.56MHz RFID module
- Operating voltage: 3.3V
- Communication : SPI
- Maximum Data Rate: 10Mbps
- Read Range: 5cm
- Current Consumption: 13-26mA
- Power down mode consumption: 10uA (min)
Vcc | Used to Power the module, typically 3.3V is used |
RST | Reset pin – used to reset or power down the module |
Ground | Connected to Ground of system |
IRQ | Interrupt pin – used to wake up the module when a device comes into range |
MISO/SCL/Tx | MISO pin when used for SPI communication, acts as SCL for I2c and Tx for UART. |
MOSI | Master out slave in pin for SPI communication |
SCK | Serial Clock pin – used to provide clock source |
SS/SDA/Rx | Acts as Serial input (SS) for SPI communication, SDA for IIC and Rx during UART |
Ref.