The company was founded in 2006 and is headquartered in Eindhoven, Netherlands.

NXP Semiconductors is a publicly traded multinational company that designs, develops, and manufactures a wide range of semiconductors and integrated circuits for various applications, including automotive, industrial, communications, and consumer markets.

■ Internal oscillator for connection to 27.12 MHz quartz crystal ■ FIFO buffer handles 64 byte send and receive ◆ RS232 Serial UART up to 1228.8 kBd, with voltage levels dependant on pin ◆ I2C-bus interface up to 400 kBd in Fast mode, up to 3400 kBd in High-speed mode ■ Additional internal power supply to the smart card IC connected via MFIN/MFOUT ■ Supports ISO/IEC 14443 A higher transfer speed communication up to 848 kBd

■ Supports MF1xxS20, MF1xxS70 and MF1xxS50 encryption in Read/Write mode ■ Typical operating distance in Read/Write mode up to 50 mm depending on the ■ Supports ISO/IEC 14443 A/MIFARE and NTAG ■ Buffered output drivers for connecting an antenna with the minimum number of ■ Highly integrated analog circuitry to demodulate and decode responses

Serial UART (similar to RS232 with voltage levels dependant on pin voltage supply).

The following host interfaces are provided: The MFRC522 supports contactless communication and uses MIFARE higher transfer speeds up to 848 kBd in both directions. The MFRC522 supports MF1xxS20, MF1xxS70 and MF1xxS50 products. The digital module manages the complete ISO/IEC 14443 A framing and error detection (parity and CRC) functionality. The receiver module provides a robust and efficient implementation for demodulating and decoding signals from ISO/IEC 14443 A/MIFARE compatible cards and transponders.

The MFRC522’s internal transmitter is able to drive a reader/writer antenna designed to communicate with ISO/IEC 14443 A/MIFARE cards and transponders without additional active circuitry. The MFRC522 reader supports ISO/IEC 14443 A/MIFARE and NTAG. The MFRC522 is a highly integrated reader/writer IC for contactless communication at 13.56 MHz. To aid readability throughout this data sheet, the MIFARE Mini, MIFARE 1K, MIFARE 4K, MIFARE Ultralight, MIFARE DESFire EV1 and MIFARE Plus products and protocols have the generic name MIFARE. Remark: The MFRC522 supports all variants of the MIFARE Mini, MIFARE 1K, MIFARE 4K, MIFARE Ultralight, MIFARE DESFire EV1 and MIFARE Plus RF identification protocols. This document describes the functionality and electrical specifications of the contactless reader/writer MFRC522.

Rfid rc522 proteus library