RC522 RFID - 13.56MHz

RC522 RFID Module Specifications

• Operating Voltage: 3.3V
• Operating Current: 13-26 mA
• Operating Frequency: 13.56 MHz
• Communication Interface: SPI protocol, also supports I2C and UART
• Read Range: 2-5 cm (depends on the antenna design)
• Data Transfer Rate: Maximum 10 Mbit/s
• Supported RFID Cards: ISO/IEC 14443 Type A/MIFARE

Features

• Highly Integrated Reader/Writer IC: For contactless communication at 13.56 MHz.
• Low Power Consumption: Ideal for battery-powered applications.
• Supports Multiple Communication Protocols: SPI, I2C, and UART, providing flexibility in interfacing.
• Anti-Collision Algorithm: Allows multiple tags to be detected and read simultaneously.
• Programmable Timer: With multiple modes of operation.
• EEPROM Memory: For user configurations and storing keys for cryptographic operations.
• Advanced Modulation and Demodulation: Functions for contactless communication.
• Hardware Features: Such as CRC co-processor, parity generator/checker, framing logic, and FIFO buffer.
• Operating Temperature: -20°C to +80°C, suitable for a wide range of environmental conditions.

Applications

• Access Control Systems: For secure entry and exit points.
• Payment Systems: Contactless payment terminals and systems.
• Identification Systems: Employee ID cards, student ID cards, etc.
• Inventory Management: Tracking and managing inventory with RFID tags.
• Automation Systems: Various automated systems requiring secure communication.

Pin Configuration

1. VCC: 3.3V power supply
2. RST: Reset pin
3. GND: Ground
4. MISO/SCL/TX: SPI MISO, I2C SCL, UART TX
5. MOSI: SPI MOSI
6. SCK: SPI clock
7. SS/SDA/RX: SPI slave select, I2C SDA, UART RX
8. IRQ: Interrupt pin (optional, used for advanced functions)

Basic Usage

1. Connect the Module: Using SPI, I2C, or UART interfaces to your microcontroller.
2. Initialize Communication: Set up the communication protocol in your microcontroller's code.
3. Send Commands: Use provided libraries to send commands to the RC522 module.
4. Read/Write Data: Perform read/write operations on RFID tags.

Example Projects

• Access Control System: Use the RC522 to create an RFID-based door lock system.
• Attendance System: Track attendance in schools or workplaces using RFID cards.
• Payment System: Develop a simple contactless payment terminal using the RC522