MFRC-522 RC522 Module RF Card Reader RFID Module for Arduino

MFRC522 RFID module is a highly integrated read and writes card chip. It works in 13.56MHz contactless communication. It is a low cost, low voltage, small size, contactless card chip. It finds its application in intelligent instruments and portable handled devices. This module follows all the protocols of 13.56MHz passive contactless communication method, which makes it use advanced modulation and demodulation methods.

Specification

• Working current: 13-26mA
• Standby current: 10-13mA
• Peak current: <30mA
• Sleep current: <80mA
• Working voltage: DC 3.3V
• Working frequency: 13.56MHz
• Protocol: SPI
• Max communication speed: 10Mbits/s
• Max card reading distance: 60mm

Pin Description

1. Vcc: 3.3V
2. Rst: Reset
3. Gnd: Ground
4. IRQ: Interrupt
5. MISO: SCL for I2C and Tx for UART
6. MOSI: master out slave in pin for SPI communication
7. SCK: Clock source
8. SS: Serial Input for SPI communication, SDA for I2c and Rx for UART

Application

• Security system
• Turnstile gate
• Tracker
• In IoT projects