Pin 2 RST It’s a reset pin for the module. In some versions of RC522, this pin is denoted by 3V3 on the module instead of VCC. Power/Reset Pins PINS DETAILS Pin 1 VCC The power pins are VCC.
RC522 Pinout DiagramĪll the pins of MFRC/RC522 RFID card Reader are: The onboard microcontroller won’t make the module a stand-alone device. Therefore, the device may have its microcontroller chip on itself but it only makes it to works as an RFID. So, the first one is power and the second one is the communication pins. In this module, there are only two kinds of pins. 2D Diagram RC522 Pin Configuration Details.
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