基于单片机的16X64LED点阵显示屏设计

分类号TP273单位代码10642密级公开学号201108051018学士学位论文论文题目：基于单片机的LED点阵显示屏设计论文作者：付文星指导教师：杨宝亮（讲师）专业：电子信息科学与技术提交论文日期：2015年5月11日论文答辩日期：2015年5月17日学位授予单位：重庆文理学院中国重庆2015年5月GraduationThesisofChongqingUniversityofArtsandSciencesDesignofLEDMatrixScreenbasedonMCUCandidate:FuWenXingSupervisor:YangBaoLiang（lecturer）Major:ElectronicinformationScienceandTechnologyCollegeofElectronandElectricalEngineeringChongqingUniversityofArtsandSciences05,2015中文摘要I摘要此课题设计的是基于单片机的LED显示屏，以STC12C5A60S2单片机为整个系统的控制核心，由时钟芯片DS1302、温度传感器DS18B20和点阵显示屏驱动器构成整个系统。点阵显示屏采用16块8×8的LED点阵焊接成16×64点阵显示屏，能够实现显示时间、温度、简单的图像等。显示方式采用动态显示，文字、数字能够实现静止、滚动显示方式。单片机STC12C5A60S2控制程序采用C语言进行编程，通过程序控制各显示单元对应LED点阵屏的阳极和阴极端的高低电平，准确的控制没一个LED灯的亮灭。所需要显示文字、数字、符号的点阵数据使用字模提取软件获取。基于单片机的LED点阵屏便于信息更改、亮度高、能耗低、显示内容丰富，在广告宣传和实验教学中有着广泛的应用。关键词：单片机；LED点阵屏；STC12C5A60S2；DS1302英文摘要IIAbstractDesignofthesubjectistheLEDdisplaybasedonsinglechipmicrocomputer,STC12C5A60S2microcontrollerasthecontrolcoreofthewholesystem,bytheclockchipDS1302,temperaturesensorDS18B20anddotmatrixdisplayscreendrivethewholesystem.Dotmatrixdisplayscreenwith16piecesof8x8of16*64dotmatrixdisplayscreen,LEDlatticeweldingintocanachievedisplaytime,temperature,simpleimageandsoon.Displaydynamicdisplay,text,Numbers,canachievestatic,scrollingdisplaymode.SCMSTC12C5A60S2controlprogramusingClanguageprogramming,throughtheprogramcontrolanddisplayunitcorrespondingtotheLEDlatticescreenanodeandthecathodesideofhighandlowlevel,theaccuratecontroldidnotdestroythelightofanLEDlamp.Theneedtodisplaytext,Numbers,symbolsoflatticesoftwareforextractingdatausingafont.BasedonsinglechipmicrocomputerofLEDdotmatrixscreentofacilitateinformationchanges,highbrightness,lowenergyconsumption,showsrichcontent,inadvertisingandhasbeenwidelyusedintheexperimentteaching.Keywords:MCU;LEDmatrixscreen;STC12C5A60S2；DS1302目录目录1引言.......................................................................................................................................................12系统总体设计.......................................................................................................................................13系统硬件电路设计...............................................................................................................................13.1主控模块.................................................................................................................................13.2单片机时钟电路和复位电路..................................................................................................23.3时钟模块.................................................................................................................................33.4温度模块.................................................................................................................................33.5按键模块.................................................................................................................................43.6点阵屏驱动芯片........................................................................................................................43.6.174HC138芯片简介..........................................................................................................43.6.274HC595芯片简介.........................................................................................................53.6.374HC245芯片简介.........................................................................................................53.6.474HC4953芯片简介........................................................................................................63.7点阵显示屏模块......................................................................................................................63.7.1点阵显示原理...................................................................................................................63.7.2驱动电路设计...................................................................................................................84系统总体设计.......................................................................................................................................95系统调试.............................................................................................................................................115.1硬件调试...............................................................................................................................115.2软件调试...............................................................................................................................116结语.....................................................................................................................................................13致谢.........................................................................................................................................................14参考文献.................................................................................................................................................15附录...............................................................................................