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RC522 RFID Card Reader Module 13.56MHz

SKU: OPAIC1NQW6
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The RC522 RFID Card Reader Module ā€“ 13.56MHz is a compact, low-cost contactless RFID reader and writer module designed for identification, access control, attendance systems, authentication, and automation projects. The module is based on the MFRC522 RFID reader/writer IC and operates at the standard high-frequency RFID carrier frequency of 13.56MHz. The module generates a 13.56MHz electromagnetic field through its onboard...
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The RC522 RFID Card Reader Module ā€“ 13.56MHz is a compact, low-cost contactless RFID reader and writer module designed for identification, access control, attendance systems, authentication, and automation projects. The module is based on the MFRC522 RFID reader/writer IC and operates at the standard high-frequency RFID carrier frequency of 13.56MHz.

The module generates a 13.56MHz electromagnetic field through its onboard PCB antenna. When a compatible passive RFID card, tag, or key fob is placed near the reader, the tag receives power from the electromagnetic field and communicates its identification or stored data back to the module. The MFRC522 supports ISO/IEC 14443 Type A, MIFARE, and compatible NTAG transponders.

The RC522 module is most commonly interfaced with microcontrollers using the SPI communication interface. The MFRC522 IC itself also supports IĀ²C and serial UART host interfaces, although common RC522 breakout boards are generally configured and used through SPI. The module provides fast communication, low power consumption, a compact PCB antenna, and short-range contactless reading suitable for embedded RFID applications.

The module is widely used with Arduino, ESP32, ESP8266, STM32, Raspberry Pi, RP2040, PIC, AVR, and other development platforms for electronic door locks, attendance machines, membership systems, smart cabinets, inventory tracking prototypes, and educational RFID projects.

Key Features

  • Operates at 13.56MHz RFID frequency
  • Based on the MFRC522 RFID reader/writer IC
  • Supports contactless RFID card and tag communication
  • Supports ISO/IEC 14443 Type A transponders
  • Supports compatible MIFARE cards and tags
  • Supports compatible NTAG transponders
  • RFID card reading capability
  • RFID card writing capability for supported writable tags
  • Integrated PCB antenna
  • Short-range contactless communication
  • SPI communication on commonly used module configurations
  • Low operating voltage
  • Low power consumption
  • Power-down mode support at IC level
  • Built-in CRC coprocessor
  • Integrated framing and error detection
  • Programmable timer and interrupt features
  • Compact and lightweight PCB design
  • Easy integration with microcontrollers
  • Suitable for security and identification projects

Shipping & Returns

Orders placed before 3 PM IST will be shipped on the same day (excluding Sundays and Public holidays) through our shipping partners. In rare cases, the pickup may get delayed during Public holidays / Bandh / Environmental disturbances.

Specifications

Specifications:

Module Type: RFID Reader and Writer Module
Module Name: RC522
Controller IC: MFRC522
Operating Frequency: 13.56MHz
Supported Standard: ISO/IEC 14443 Type A
Supported Tag Families: Compatible MIFARE and NTAG Devices
Module Supply Voltage: Typically 3.3V DC
MFRC522 IC Supply Range: 2.5V to 3.3V
Primary Module Interface: SPI
MFRC522 Host Interfaces: SPI, IĀ²C-Bus and Serial UART
Maximum SPI Data Rate: Up to 10Mbit/s
RF Communication Speed: Up to 848kBd at IC level for supported high-speed communication modes
Typical Reading Distance: Up to Approximately 50mm, Depending on Antenna Tuning, Tag Type, Orientation and Environmental Conditions
FIFO Buffer Size: 64 Bytes
CRC Coprocessor: Integrated
Interrupt Support: Yes
Hard Reset Support: Yes
Software Power-Down Mode: Supported
Typical Module Current Consumption: Approximately 13mA to 26mA, Module and Operating Condition Dependent
Power-Down Current: Very Low at IC Level
Antenna Type: Integrated PCB Loop Antenna
Typical Module Dimensions: Approximately 60mm Ɨ 40mm
Number of Interface Pins: 8
Mounting Type: PCB Module
Compatibility: Arduino UNO, Nano, Mega, ESP32, ESP8266, STM32, Raspberry Pi, Raspberry Pi Pico, RP2040, PIC, AVR and other SPI-capable controllers.

Additional Resources

RC522-RFID.PDF

FAQ

1. What is the RC522 RFID Card Reader Module used for?

The RC522 module is used for contactless RFID identification and data communication. It is commonly used in access control systems, attendance machines, electronic door locks, membership systems, authentication projects, and RFID-based automation.

2. What frequency does the RC522 RFID Module operate at?

The RC522 operates at a carrier frequency of 13.56MHz and supports compatible ISO/IEC 14443 Type A RFID cards and tags.

3. Can the RC522 module be used with Arduino and ESP32?

Yes. The RC522 can be used with Arduino, ESP32, ESP8266, STM32, Raspberry Pi, RP2040, PIC, AVR, and other controllers. SPI is the most commonly used communication interface on RC522 breakout modules.

4. Can the RC522 read and write RFID cards?

Yes. The MFRC522 is a reader/writer device and can read identification data and access memory on supported compatible writable RFID cards and tags. Actual write capability depends on the tag type, memory organization, authentication requirements, and access permissions.

5. Can the RC522 read 125kHz RFID cards and key fobs?

No. The RC522 operates at 13.56MHz and cannot communicate with 125kHz RFID tags such as standard EM4100 or EM4102 key fobs. A compatible 125kHz RFID reader is required for those tags.