RFID Reader/Writer 13.56MHZ RC522

Description:

The RC522 module allows you to read and write data to RFID tags and cards operating at 13.56MHz, the frequency commonly used for Near Field Communication (NFC). It communicates with microcontrollers via SPI (Serial Peripheral Interface), making it simple to integrate into projects. The module typically comes with an antenna built-in on the PCB.   

Key Features:

• Operating Frequency: 13.56MHz 
• Chip: MFRC522 
• Interface: SPI for communication with microcontrollers.   
• Reading/Writing Range: Up to 3cm 
• Data Transfer Rate: Up to 10Mbit/s   
• Supported Card Types: MIFARE Classic, MIFARE DESFire, MIFARE Ultralight, and other ISO14443A/B compliant tags.   
• On-board Antenna: Typically includes a PCB antenna. External antenna options may be available.
• Voltage: 3.3V 
• Low Power Consumption: Suitable for battery-powered applications.
• Compact Size: Small form factor for easy integration.   

Applications:

The RC522 module finds applications in a broad range of projects:

• Access Control: Door entry systems, building security.
• Identification: Personnel tracking, animal identification.
• Payment Systems: Contactless payment terminals, e-wallets.
• Inventory Management: Tracking goods in warehouses, libraries.
• Smart Home: Automation, device control.   
• DIY Projects: Arduino-based RFID projects, NFC tag reading/writing.  
• Student ID cards: Library access, attendance tracking.
• Loyalty Programs: Customer rewards, membership cards.

Specifications:

• Power Supply: 3.3V DC (Regulated)   
• Current Consumption: 13-26mA (typical)   
• Operating Temperature: -20°C to +85°C
• Dimensions: Approximately 40mm x 60mm   
• Communication Protocol: SPI   
• Modulation: ASK, OOK
• Data Rates: 106 kbit/s, 212 kbit/s, 424 kbit/s

DATA SHEET AND USECASE

Key Specification:

• Integrated Analog Circuitry: Demodulates and decodes responses efficiently.
• Buffered Output Drivers: Facilitate antenna connection with minimal external components.
• Multiple Host Interfaces: Supports SPI (up to 10 Mbit/s), I²C (up to 3.4 Mbit/s in High-speed mode), and UART (up to 1228.8 kBd).
• Operating Distance: Up to 50 mm, depending on antenna size and tuning.
• Data Transfer Rate: Supports communication speeds up to 848 kBd.
• Power Supply: Operates at 2.5 V to 3.3 V.