You can visit his GitHub page for more details on how to use it with Arduino.In this library I’m talking about RFID ( Radio- Frequency IDentification). The module can be easily used with Arduino because of its readily available RC522 RFID Arduino library from Miguel Balboa. The minimum current consumed by the module during power down mode will be 10uA only. This can be achieved by using the IRQ pin on the module. The Reader can be put into power down mode to save power in battery operated applications. Since in application, most of the time reader module will be waiting for the tag to come into proximity. The module supports SPI, IIC and UART communication but out of these SPI is often used since it is the fasted with a maximum data rate of 10Mbps. But, the communication pins of this module are 5V tolerant and hence it can be used with 5V microcontrollers also like Arduino without any additional hardware. The RC522 has an operating voltage between 2.5V to 3.3V and hence is normally powered by 3.3V and should be used with 3.3V communication lines. The reader can read data only form passive tags that operate on 13.56MHz.

The RC522 reader module can both read and write data into these memory elements. The keychain has 1kB memory in it which can be used to stored unique data. It is normally used in application where certain person/object has to be identified with a unique ID. The module operates at 3.3V typically and hence commonly used in 3.3V designs. The module operates 13.56MHz which is industrial (ISM) band and hence can be used without any license problem. The RC522 is a RF Module that consists of a RFID reader, RFID card and a key chain. RFID Tag, EM-18 RFID Reader, PN532 RFID Module Power down mode consumption: 10uA (min).Communication : SPI, I2C protocol, UART.Serial Clock pin – used to provide clock sourceĪcts as Serial input (SS) for SPI communication, SDA for IIC and Rx during UART Master out slave in pin for SPI communication MISO pin when used for SPI communication, acts as SCL for I2c and Tx for UART. Interrupt pin – used to wake up the module when a device comes into range Reset pin – used to reset or power down the module Used to Power the module, typically 3.3V is used It is commonly used in attendance systems and other person/object identification applications. The module can supports I2C, SPI and UART and normally is shipped with a RFID card and key fob. The RC522 is a 13.56MHz RFID module that is based on the MFRC522 controller from NXP semiconductors.

Rfid rc522 proteus library