The RC522 is a 13.56MHz RFID module that is based on the MFRC522 controller from NXP semiconductors. The module can supports I2C, SPI and UART and normally is shipped with a RFID card and key fob. It is commonly used in attendance systems and other person/object identification applications.
RFID MFRC-522 RC522 Module
$5.00
5 in stock
Description
The RC522 is a 13.56MHz RFID module that is based on the MFRC522 controller from NXP semiconductors. The module can supports I2C, SPI and UART and normally is shipped with a RFID card and key fob. It is commonly used in attendance systems and other person/object identification applications.
Pinout
| Pin Number | Pin Name | Description |
| 1 | Vcc | Used to Power the module, typically 3.3V is used |
| 2 | RST | Reset pin – used to reset or power down the module |
| 3 | Ground | Connected to Ground of system |
| 4 | IRQ | Interrupt pin – used to wake up the module when a device comes into range |
| 5 | MISO/SCL/Tx | MISO pin when used for SPI communication, acts as SCL for I2c and Tx for UART. |
| 6 | MOSI | Master out slave in pin for SPI communication |
| 7 | SCK | Serial Clock pin – used to provide clock source |
| 8 | SS/SDA/Rx | Acts as Serial input (SS) for SPI communication, SDA for IIC and Rx during UART |
Technical Specification
| Module | 13.56MHz RFID |
| Operating Voltage | 2.5V to 3.3V |
| Communication | SPI, I2C protocol, UART |
| Maximum Data Rate | 10Mbps |
| Read Range | 5cm |
| Current Consumption | 13 to 26mA |
| Power down mode consumption | 10uA (min) |
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