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          EEPW首頁 > 手機(jī)與無線通信 > 設(shè)計(jì)應(yīng)用 > 基于MFRC530設(shè)計(jì)的ISO14443A無接觸讀卡技術(shù)

          基于MFRC530設(shè)計(jì)的ISO14443A無接觸讀卡技術(shù)

          作者: 時間:2010-07-05 來源:網(wǎng)絡(luò) 收藏
          本文介紹了主要特性,方框圖, 接收器電路框圖, 定時器模塊框圖,以及與微處理器的連接框圖和典型應(yīng)用電路圖.NXP公司的支持通信方案所有層面的高度集成的13.56MHz無通信的讀卡器IC,它采用杰出的調(diào)制和解調(diào),內(nèi)部的發(fā)送器能驅(qū)動接近100毫米距離的天線,接收器則能有效地實(shí)現(xiàn)對來自兼容的轉(zhuǎn)發(fā)器信號進(jìn)行解調(diào),數(shù)據(jù)速率高達(dá)424k波特.

          The MF RC530 supports all layers of the communication scheme.

          The MF RC530 supports contactless communication using MIFARE® Higher Baudrates.

          The internal transmitter part is able to drive an antenna designed for proximity operating distance (up to 100 mm) directly without additional active circuitry.

          The receiver part provides a robust and efficient implementation of a demodulation and decoding circuitry for signals from ISO14443A compatible transponders.

          The digital part handles the complete ISO14443A framing and error detection (Parity CRC). Additionally it supports the fast MIFARE® Classic security algorithm to authenticate MIFARE Classic (e.g. MIFARE® Standard, MIFARE® Light) products.

          A comfortable parallel interface, which can be directly connected to any 8-bit μ-Processor gives high flexibility for the reader/terminal design. Additionally a SPI compatible interface is supported.

          MF RC530主要特性:

          Highly integrated analog circuitry to demodulate and decode card response

          Buffered output drivers to connect an antenna with minimum number of external components

          Proximity operating distance (up to 100 mm)

          Supports ISO 14443A

          Supports MIFARE® Dual Interface Card ICs and supports MIFARE® Classic protocol

          Supports contactless communication with higher baudrates up to 424kbaud

          Crypto1 and secure non-volatile internal key memory

          Pin-compatible to the MF RC500, MF RC531, SL RC400 and CL RC632

          Parallel μ-Processor interface with internal address latch and IRQ line

          SPI compatible interface

          Flexible interrupt handling

          Automatic detection of parallel μ-Processor interface type

          Comfortable 64 byte send and receive FIFO-buffer

          Hard reset with low power function

          Power down mode per software

          Programmable timer

          Unique serial number

          User programmable start-up configuration

          Bit- and byte-oriented framing

          Independent power supply pins for digital, analog and transmitter part

          Internal oscillator buffer to connect 13.56 MHz quartz, optimised for low phase jitter

          Clock frequency filtering

          3.3 V to 5 V operation for transmitter (antenna driver) in short range and proximity applications

          3.3 V or 5V operation for the digital part


          圖1.MF RC530方框圖

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