MFRC522 is a highly integrated reader/writer IC for contactless communication at 13.56 MHz. The MFRC522 reader supports ISO/IEC 14443 A/MIFARE and NTAG.
Feature
and benefits
■ Highly integrated analog circuitry to demodulate and decode responses
■ Buffered output drivers for connecting an antenna with the minimum number of
external components
■ Supports ISO/IEC 14443 A/MIFARE and NTAG
■ Typical operating distance in Read/Write mode up to 50 mm depending on the
antenna size and tuning
■ Supports MF1xxS20, MF1xxS70 and MF1xxS50 encryption in Read/Write mode
■ Supports ISO/IEC 14443 A higher transfer speed communication up to 848 kBd
■ Supports MFIN/MFOUT
■ Additional internal power supply to the smart card IC connected via MFIN/MFOUT
■ Supported host interfaces
◆ SPI up to 10 Mbit/s
◆ I2C-bus interface up to 400 kBd in Fast mode, up to 3400 kBd in High-speed mode
◆ RS232 Serial UART up to 1228.8 kBd, with voltage levels dependant on pin
voltage supply
■ FIFO buffer handles 64 byte send and receive
■ Flexible interrupt modes
■ Hard reset with low power function
■ Power-down by software mode
■ Programmable timer
■ Internal oscillator for connection to 27.12 MHz quartz crystal
■ 2.5 V to 3.3 V power supply
■ CRC coprocessor
■ Programmable I/O pins
■ Internal self-test
