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RC522 RFID Module Overview
medium.com/autonomous-robotics/an-introduction-to-rfid-dc6228767691Yapay zekadan makale özeti
- Module Features
- RC522 is an inexpensive RFID module with 1KB memory
- Operates at 13.56MHz electromagnetic field
- Supports SPI, I2C and UART communication protocols
- Can write tags and has interrupt pin for tag detection
- Hardware Specifications
- Requires 2.5-3.3V power, 5V tolerant logic pins
- Has 8 pins including VCC, RST, GND, IRQ, MISO/SCL/Tx
- Includes interrupt pin for tag detection
- Memory Structure
- 1K memory organized into 16 sectors
- Each sector divided into 4 blocks
- Only bottom 3 blocks (0, 1, 2) usable for data storage
- Block 0 contains manufacturer data and UID
- Programming
- Uses MFRC522 library for tag reading and writing
- Library provides DumpInfo example sketch for tag information
- Custom functions available for writing and reading data