STC8H8K64U最小系统板（STC单片机创意设计大赛）

<h1>本次设计以STC8H8K64U-45I-LQFP48主控为核心的开发板</h1> <h2>特性:</h2> <h2><span style="color: #f1c40f; font-size: 12pt;">内核 &bull; 超高速 8051 内核（1T），比传统 8051 约快 12 倍以上,指令代码完全兼容传统8051 &bull; 22个中断源，4 级中断优先级 &bull; 支持在线仿真 工作电压 &bull; 1.9V～5.5V 工作温度 &bull; -40℃～85℃</span></h2> <h2>主控电路</h2> <p><img src="//image.lceda.cn/pullimage/ra4hy0CvFpppgQ82OmlulTFFIqP3RIsRNZ9Y6IZP.png" alt="" /></p> <h2>外部晶振，复位，电源指示灯</h2> <p><img src="//image.lceda.cn/pullimage/jdEADoDRqbZtyNMEONtaz85lmaUtP1jFJtOIzcGh.png" alt="" width="401" height="290" /><img src="//image.lceda.cn/pullimage/rjeR1jKRKGKzfTdvVK0UN61eje2fowjeYIvXBibO.png" alt="" width="404" height="171" /><img src="//image.lceda.cn/pullimage/ds3I0ALnX2zOp7l3242WrWk3CIRwRBMlujHIdTVh.png" alt="" width="216" height="94" /></p> <h2>5V转3.3V，LDO线性稳压器，拓展单片机的电源接口，可为外部模块供电</h2> <p><img src="//image.lceda.cn/pullimage/iGQECtnIeLgrI0l176qtZTSVPy8A1dxV5DVe5yHG.png" alt="" width="405" height="293" /></p> <h2>数码管显示部分、流水灯及外部拓展按钮电路，主要用到ULN2803来驱动数码管和一个有源蜂鸣器，丰富单片机的可玩性</h2> <p><img src="//image.lceda.cn/pullimage/BYZEjkyNvF0AlJItKWuzH5RaLAm60KQpMdue9hmi.png" alt="" width="663" height="151" /></p> <p><img src="//image.lceda.cn/pullimage/C5HBPZsR33FSv889FyMO9RSqc2a08NnP7ZbcTzNB.png" alt="" width="191" height="186" /><img src="//image.lceda.cn/pullimage/ATbadUCCmFs4YQwujpUGu4U5pAPI0vrZS9F0dQFs.png" alt="" width="179" height="180" /></p> <h2>供电及下载电路（这里应该有三类下载吧）</h2> <p>CH340 是一个 USB 总线的转接芯片，实现 USB 转串口或者 USB 转打印口。CH340是国产芯片，应用场合居多，市场占有率很高。常用的USB转串口芯片还有CP2102、PL2303、FT232等，相比之下CH340性价比最高。通过CH340转串口连接到单片机MCU的片上UART可以实现程序的一键烧写功能。</p> <p><img src="//image.lceda.cn/pullimage/V4rzHgML1UoCDjJ5QBydmg4B5Fu4T21xEvU8JJPj.png" alt="" width="601" height="182" /></p> <p><img src="//image.lceda.cn/pullimage/oOSEeRE80Y6RDvT0GxQ8OeSyfgxhtEXJSxBiRQ6I.png" alt="" width="195" height="181" /><img src="//image.lceda.cn/pullimage/CQf8DJtoNNDfhQ0vqbS3Of30GVraVTQGuzmkw67n.png" alt="" width="182" height="109" /><img src="//image.lceda.cn/pullimage/IDT8MihS14HNhuKmbIkX16laGTAkSawlE9y3ijrO.png" alt="" width="200" height="192" /></p> <h2>引脚接口</h2> <p><img src="//image.lceda.cn/pullimage/BhieeptpCxUFnU5BbZBgNyHWfhrAhjYv6mxzhyiT.png" alt="" width="243" height="351" /></p> <h2>完整原理图（<span style="color: #f1c40f;">太模糊了，丢附件里了</span>）</h2> <p><img src="//image.lceda.cn/pullimage/8kiiBFRIKfLmyv1Uhl7jNImJLHaMBIgkqTuVsAJK.png" alt="" /></p> <h2><span style="color: #843fa1;">丑丑的</span>PCB走线设计&mdash;&mdash;能用就行（<span style="color: #f1c40f;">狗头保命</span>）</h2> <p><img src="//image.lceda.cn/pullimage/R1mn0hcr10EQRgHLYTlo7zuERWahUC0dqFG49tiI.png" alt="" /></p> <p><img src="//image.lceda.cn/pullimage/s8NGOqoDKfD5x5CUs4XMRTkS7zcTFvXXsGG3ptRp.png" alt="" /></p> <h2>PCB&mdash;&mdash;3D预览（晶振在背面&nbsp; &nbsp; <span style="color: #f1c40f;">小慌张~</span>）</h2> <p><img src="//image.lceda.cn/pullimage/nHUsBjZftGHtB70GiNzPAAvMGpNl0MLFgOTNk2hO.png" alt="" /></p> <p><img src="//image.lceda.cn/pullimage/kVezwOgo7zMBSonVJxqlPdnXhf6KqOyxjXzXt7mM.png" alt="" /></p> <h2>实物图</h2> <p><img src="//image.lceda.cn/pullimage/f5ieOP2vrUxnPiLBH5Kh4EAr48JBI9MSW3KJauvG.jpeg" alt="" width="800" height="450" /></p> <h1>好啦！也算是完成项目了（小菜鸟的我还得多练）</h1> <h1><span style="color: #843fa1;"><img src="//image.lceda.cn/pullimage/XtwKvdqw9LWtVzzYi1PPatYuNs3wUlryMWXAdV31.png" alt="" />&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <img src="//image.lceda.cn/pullimage/sY1BVHDvj7dnJqO8Y20cRdjDY9aVEMdEeCDNwZxK.png" alt="" /></span></h1> <p>&nbsp;</p> <h1><span style="color: #843fa1;">感谢嘉立创的免费券！电子佬的福音（超大声）</span></h1> <p>&nbsp;</p>