Description
📡 Product Overview: RC522 RFID Reader/Writer Module with Tag
The MFRC-522 RFID module is a 13.56 MHz contactless communication reader/writer module based on NXP’s MFRC522 IC. It is commonly used in hobby electronics, Arduino projects, and embedded systems for short-range RFID communication.
🧰 Key Specifications
| Parameter | Details |
|---|---|
| Operating Frequency | 13.56 MHz |
| IC Chip | NXP MFRC522 |
| Communication | SPI (default), I²C, UART (optional) |
| Operating Voltage | 3.3V (logic and power) |
| Max Current | ~13-26 mA |
| Reading Distance | Up to 5–6 cm |
| Data Rate | 106 kbit/s |
| Operating Temperature | -20°C to +85°C |
| Antenna Type | Onboard PCB antenna |
| Dimensions | Approx. 40mm × 60mm |
📦 What’s Typically Included
-
1x RC522 RFID Reader Module
-
1x RFID Card (13.56 MHz, ISO/IEC 14443 Type A)
-
1x Key Fob Tag
-
1x 8-Pin Header Strip (for soldering or breadboarding)
⚙️ Applications
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Electronic door locks
-
Attendance systems
-
Access control systems
-
Asset tracking
-
Arduino/Microcontroller projects
-
Secure login/authentication systems
🤖 Arduino Compatibility
The RC522 is widely supported in the Arduino ecosystem with libraries like:
-
MFRC522by Miguel Balboa -
Adafruit_PN532(advanced NFC features)
Wiring (for SPI):
| RC522 Pin | Arduino Uno Pin |
|---|---|
| SDA (SS) | D10 |
| SCK | D13 |
| MOSI | D11 |
| MISO | D12 |
| IRQ | Not connected |
| GND | GND |
| RST | D9 |
| 3.3V | 3.3V only (not 5V!) |
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