MFRC522 Datasheet, PDF (1/109 Pages) NXP Semiconductors – Contactless Reader IC

MFRC522
Contactless Reader IC
Rev. 3.2 — 22 May 2007
112132
Product data sheet
PUBLIC INFORMATION
1. Introduction
This document describes the functionality of the contactless reader/writer MFRC522. It
includes the functional and electrical specifications.
2. General description
The MFRC522 is a highly integrated reader/writer for contactless communication at 13.56
MHz. The MFRC522 reader supports ISO 14443A / MIFARE® mode.
The MFRC522’s internal transmitter part is able to drive a reader/writer antenna designed
to communicate with ISO/IEC 14443A/MIFARE^® cards and transponders without
additional active circuitry. The receiver part provides a robust and efficient implementation
of a demodulation and decoding circuitry for signals from ISO/IEC 14443A/MIFARE^®
compatible cards and transponders. The digital part handles the complete
ISO/IEC 14443A framing and error detection (Parity & CRC).The MFRC522 supports
MIFARE^®Classic (e.g. MIFARE^® Standard) products. The MFRC522 supports contactless
communication using MIFARE^® higher transfer speeds up to 848 kbit/s in both directions.
Various host interfaces are implemented:
• SPI interface
• serial UART (similar to RS232 with voltage levels according pad voltage supply)
• I²C interface.
3. Features
„ Highly integrated analog circuitry to demodulate and decode responses
„ Buffered output drivers to connect an antenna with minimum number of external
components
„ Supports ISO/IEC 14443A / MIFARE^®
„ Typical operating distance in Reader/Writer mode for communication to a
ISO/IEC 14443A / MIFARE^® up to 50 mm depending on the antenna size and tuning
„ Supports MIFARE^® Classic encryption in Reader/Writer mode
„ Supports ISO/IEC 14443A higher transfer speed communication up to 848 kbit/s
„ Support of the MFIN / MFOUT
„ Additional power supply to directly supply the smart card IC connected via MFIN /
MFOUT
„ Supported host interfaces