← All parts
RC522 RFID Reader/Writer
NXP
13.56 MHz RFID reader/writer module built on the NXP MFRC522. Reads and writes MIFARE tags over SPI (also supports I2C/UART on the chip). Runs at 3.3V — do not power from 5V.
In stock
Specifications
0No specs listed.
Pinout
8| Pin | Name | Functions | Notes |
|---|---|---|---|
| 1 | SDA | SPI | SPI chip select (NSS) |
| 2 | SCK | SPI | SPI clock |
| 3 | MOSI | SPI | SPI master out / slave in |
| 4 | MISO | SPI | SPI master in / slave out |
| 5 | IRQ | GPIO | Interrupt request (optional) |
| 6 | GND | GND | Ground |
| 7 | RST | GPIO | Reset |
| 8 | 3.3V | POWER | 3.3V supply (NOT 5V) |
Interactive pinout
Highlight:
BOARD
Click a pin to copy its name · tap a tag above to spotlight a bus.