NXP公司的MFRC522是13.56MHz無接觸通信的高度集成的讀/寫IC,支持ISO/IEC14443A/MIFARE模式,兩個方向的傳輸速率高達848kBd.MFRC522工作電壓2.5V到3.3V,提供SPI,串行UART和I2C總線接口,具有CRC協(xié)處理器和可編程I/O引腳,內(nèi)部有自測試.本文介紹MFRC522主要特性,簡化和詳細方框圖,讀/寫模式,總線接口圖以及典型應用方框圖.MFRC522:ContactlessreaderICTheMFRC522isahighlyintegratedreader/writerICforcontactlesscommunicationat13.56M
NXP公司的
MFRC522是13.56 MHz 無接觸通信的高度集成的讀/寫
IC,支持ISO/
IEC14443 A/MIFARE模式,兩個方向的傳輸速率高達848 kBd. MFRC522工作電壓2.5V到3.3V,提供
SPI,串行UART和I2C總線接口,具有CRC協(xié)處理器和可編程I/O引腳,內(nèi)部有自測試.本文介紹MFRC522主要特性, 簡化和詳細方框圖, 讀/寫模式, 總線接口圖以及典型應用方框圖.
MFRC522: C
ontactless reader IC
The MFRC522 is a highly integrated reader/writer IC for contactless communication at 13.56 MHz. The MFRC522 reader supports ISO/IEC 14443 A/MIFARE mode.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 receiver module provides a ro
bust and efficient implementation for demodulating and decoding signals from ISO/IEC 14443 A/MIFARE compatible cards and transponders. The digital module manages the complete ISO/IEC 14443 A framing and error detection (parity and CRC) functionality.
The MFRC522 supports MF1xxS20, MF1xxS70 and MF1xxS50 products. The MFRC522 supports contactless communication and uses MIFARE higher transfer speeds up to 848 kBd in both directions.
The following host interfaces are provided:
• Serial Peripheral Interface (SPI)
• Serial UART (similar to RS232 with voltage levels dependant on pin voltage supply)
• I2C-bus interface
MFRC522主要特性:
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
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
400kBd in Fast mode, up to 3400 kBd in High-speed mode
