基于多功能单片学习机的NANDFLASH驱动的设计ThedesignofNANDFLASHdriverbasedonaMultifunctionSCMlearningmachinePAGEIIPAGEI摘要基于多功能单片学习机的NANDFLASH驱动包括两部分：多功能单片学习机和NANDFLASH存储器。本论文首先介绍了多功能单片学习机的软/硬件设计，该学习机利用自动程序切换电路，使得同一片单片机既可以运行系统程序，又可以运行用户程序，实现程序代码的在线下载。学习机外部扩展了大量的硬件资源，丰富的系统硬件资源构成了各种实际应用电路，通过万能扩展接口可以很方便地仿真外部应用电路和扩展用户应用电路。然后，着重介绍了NANDFLASH扩展板的软/硬件设计，通过多功能单片学习机实现对NANDFLASH的读、写时序。关键字：多功能单片学习机自动切换电路NANDFLASHAbstractBasedNANDFLASHmulti-functionalsingle-chiplearningmachinedriveconsistsoftwoparts:amulti-functionalsingle-chiplearningmachineandNANDFlashmemory.Thispaperintroducesthehardware/softwaredesign,multi-functionalsingle-chiplearningmachinewithautomaticswitchcircuit,sowithamicrocontrollercaneitherrunthesystemprogram,youcanruntheuserprogram,theonlinedownloadoftheprogramcode.externallearningmachineexpansealotofhardwareresources,hardwaresystemresourcesposespracticalapplicationcircuit,throughtheuniversalexpansioninterfacecaneasilysimulatetheexternalapplicationcircuitandextendtheuserapplicationcircuit.ThenfocusesonthetheNANDFLASHexpansionboardhardware/softwaredesign,achievedthroughamulti-functionalsingle-chiplearningmachineNANDFLASHreadandwritetiming.Keyword:MultifunctionSCMlearningmachine；automaticswitchcircuit；NANDFLASH；PAGEIVPAGEIII目录TOC\o"1-3"\h\z\uHYPERLINK\l"_Toc356901939"摘要PAGEREF_Toc356901939\hIHYPERLINK\l"_Toc356901940"AbstractPAGEREF_Toc356901940\hIIHYPERLINK\l"_Toc356901941"第一章绪论PAGEREF_Toc356901941\h1HYPERLINK\l"_Toc356901942"1.1国内外研究概况PAGEREF_Toc356901942\h1HYPERLINK\l"_Toc356901943"1.2本课题的主要目标和工作PAGEREF_Toc356901943\h1HYPERLINK\l"_Toc356901944"1.3全文结构PAGEREF_Toc356901944\h2HYPERLINK\l"_Toc356901945"第二章多功能单片学习机PAGEREF_Toc356901945\h7HYPERLINK\l"_Toc356901946"2.1多功能单片学习机的硬件设计PAGEREF_Toc356901946\h7HYPERLINK\l"_Toc356901947"2.1.1单片机AT89S52电路PAGEREF_Toc356901947\h8HYPERLINK\l"_Toc356901950"2.1.2数码显示电路PAGEREF_Toc356901950\h11