RC522 Antenna RFID IC Wireless Module 🔶

The RC522 RFID reader module is a compact, cost-effective, and reliable solution for 13.56 MHz contactless applications. Built around the NXP MFRC522 transceiver, it offers dependable performance for projects ranging from access control to inventory tracking. With a high-speed SPI interface, it integrates seamlessly with popular development platforms like Arduino, Raspberry Pi, and other microcontroller-based systems.

Key Features ⭐

• High-performance MFRC522 chip for fast, stable RFID communication.
• Compliant with ISO/IEC 14443 A (MIFARE) protocols.
• Integrated PCB antenna with a typical read range of up to 50 mm (tag and environment dependent).
• Low-voltage operation, budget-friendly, and compact form factor for embedded designs.
• User-friendly SPI interface for quick integration with Arduino, Raspberry Pi, and other electronics modules.

Technical Specifications 📐

• Operating Frequency: 13.56 MHz
• Operating Voltage: 2.5 V – 3.3 V
• Interface: SPI
• Read Range: Up to 50 mm
• Dimensions: 40 mm × 60 mm
• Operating Current: 13 – 26 mA @ DC 3.3 V
• Idle Current: 10 – 13 mA @ DC 3.3 V
• Sleep Current: < 80 μA
• Peak Current: < 30 mA
• Operating Temperature: -20 °C to +80 °C
• Storage Temperature: -40 °C to +85 °C
• Relative Humidity: 5% – 95%
• Data Transfer Rate (SPI): up to 10 Mbit/s

Pinout & Integration 🔌

Typical pin signals for MFRC522-based modules (may vary by board):

• 3.3V — Power input (3.3 V only)
• GND — Ground
• SCK — SPI clock
• MOSI — SPI master-out
• MISO — SPI master-in
• SDA/SS — SPI chip select
• RST — Reset
• IRQ — Interrupt (optional)

Works seamlessly with Arduino and Raspberry Pi via SPI. Use appropriate level shifting when interfacing 5 V logic microcontrollers.

Typical Applications 🧰

• Access control systems
• Security systems
• Payment systems
• Identification systems
• Logistics tracking
• Inventory management

Package Includes 📦

1 × RC522 Antenna RFID IC Wireless Module

Engineer’s Notes ⚠️

• The MFRC522 and most breakout boards are 3.3 V only and are typically not 5 V tolerant. Use level shifters with 5 V microcontrollers (e.g., Arduino Uno).
• Read range depends on tag type, tag orientation, supply voltage, and EMI in the environment.

Datasheet 📄

Refer to the NXP MFRC522 datasheet for detailed register descriptions, RFID protocol handling, and timing specifications.