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Lesson 21 RC522 RFID Module
Overview
In this lesson, you will learn to how to apply the RC522 RFID Reader Module on
MEGA2560 R3. This module uses the Serial Peripheral Interface (SPI) bus to
communicate with controllers such as Arduino, Raspberry Pi, beagle board, etc.
Component Required:
(1) x Elegoo Mega2560 R3
(1) x RC522 RFID module
(7) x F-M wires (Female to Male DuPont wires)
Component Introduction
RC522
The MFRC522 is a highly integrated reader/writer for contactless communication at
13.56 MHz. The MFRC522 reader supports ISO 14443A / MIFARE® mode.
The MFRC522’s internal transmitter part is able to drive a reader/writer antenna
designed to communicate with ISO/IEC 14443A/MIFARE® cards and transponders
without additional active circuitry. The receiver part provides a robust and efficient
implementation of a demodulation and decoding circuitry for signals from ISO/IEC
14443A/MIFARE® compatible cards and transponders. The digital part handles the
complete ISO/IEC 14443A framing and error detection (Parity & CRC).The MFRC522
supports MIFARE®Classic (e.g. MIFARE® Standard) products. The MFRC522 supports
contactless communication using MIFARE® higher transfer speeds up to 848 kbit/s
in both directions.
Various host interfaces are implemented:
• SPI interface
• Serial UART (similar to RS232 with voltage levels according pad voltage supply)
• I2C interface.
The figure below shows a typical circuit diagram, using a complementary antenna
connection to the MFRC522.