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<div id="pf1" class="pf w0 h0" data-page-no="1"><div class="pc pc1 w0 h0"><img class="bi x0 y0 w1 h1" alt="" src="https://static.pudn.com/prod/directory_preview_static/62fb45ab5425817ffc52f6e8/bg1.jpg"><div class="c x0 y1 w2 h2"><div class="t m0 x1 h3 y2 ff1 fs0 fc0 sc0 ls0 ws0">　第二章　<span class="_ _0"> </span><span class="ff2 sc1">MCS-51<span class="_ _0"> </span></span>单片机结构</div><div class="t m0 x2 h4 y3 ff3 fs1 fc0 sc1 ls0 ws0">**2.1<span class="_ _1"></span> <span class="ff2">MCS-51<span class="_ _2"> </span><span class="ff1 sc0">单片机外特性</span></span></div><div class="t m0 x2 h4 y4 ff4 fs1 fc0 sc1 ls0 ws0">　<span class="_ _3"> </span><span class="ff2">2.2 MCS-51<span class="_ _2"> </span><span class="ff1 sc0">单片机内部结构</span></span></div><div class="t m0 x2 h4 y5 ff4 fs1 fc0 sc1 ls0 ws0">　<span class="_ _3"> </span><span class="ff2">2.3 MCS-51<span class="_ _2"> </span><span class="ff1 sc0">存储器</span></span></div><div class="t m0 x2 h4 y6 ff4 fs1 fc0 sc1 ls0 ws0">　<span class="_ _3"> </span><span class="ff2">2.4 <span class="_ _4"> </span><span class="ff1 sc0">专用功能寄存器</span></span></div><div class="t m0 x2 h4 y7 ff4 fs1 fc0 sc1 ls0 ws0">　<span class="_ _3"> </span><span class="ff2">2.5 <span class="_ _4"> </span><span class="ff1 sc0">中断系统</span></span></div><div class="t m0 x2 h4 y8 ff4 fs1 fc0 sc1 ls0 ws0">　<span class="_ _3"> </span><span class="ff2">2.6 <span class="_ _4"> </span><span class="ff1 sc0">定时器<span class="_ _4"> </span></span>/<span class="_ _2"> </span><span class="ff1 sc0">计数器</span></span></div><div class="t m0 x2 h4 y9 ff4 fs1 fc0 sc1 ls0 ws0">　<span class="_ _3"> </span><span class="ff2">2.7<span class="_ _4"> </span><span class="ff1 sc0">串行接口</span></span></div></div></div><div class="pi" data-data='{"ctm":[1.333333,0.000000,0.000000,1.333333,0.000000,0.000000]}'></div></div>
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<div id="pf2" class="pf w0 h0" data-page-no="2"><div class="pc pc2 w0 h0"><img class="bi x0 y0 w1 h1" alt="" src="https://static.pudn.com/prod/directory_preview_static/62fb45ab5425817ffc52f6e8/bg2.jpg"><div class="c x0 y1 w2 h2"><div class="t m0 x3 h3 ya ff4 fs0 fc0 sc1 ls0 ws0">2.1　　　MCS-51<span class="_ _5"> </span><span class="ff1 sc0">单片机的外特</span></div><div class="t m0 x3 h3 yb ff1 fs0 fc0 sc0 ls0 ws0">性</div><div class="t m0 x3 h4 yc ff4 fs1 fc0 sc1 ls0 ws0">2.1.1　M<span class="_ _1"></span>CS-51<span class="_ _2"> </span><span class="ff1">系列</span></div><div class="t m0 x3 h4 yd ff3 fs1 fc0 sc1 ls0 ws0"> <span class="_ _4"> </span><span class="ff1">（<span class="_ _2"> </span><span class="sc0">1<span class="_ _6"> </span></span>）<span class="_ _4"> </span><span class="ff4 fc1">M<span class="_ _1"></span>CS-51<span class="_ _2"> </span></span>是<span class="_ _2"> </span><span class="ff4">Intel<span class="_ _2"> </span></span>公司生产的一</span></div><div class="t m0 x3 h4 ye ff1 fs1 fc0 sc1 ls0 ws0">个单片机系列名称。<span class="_ _1"></span>属于这一系列的单片机</div><div class="t m0 x3 h4 yf ff1 fs1 fc0 sc1 ls0 ws0">有多种，如：</div><div class="t m0 x4 h5 y10 ff1 fs2 fc0 sc0 ls0 ws0"> <span class="_ _1"></span><span class="sc1">﹡<span class="ff4">8051/8751/8031<span class="_ _7"> </span></span>；</span>　　<span class="_ _8"> </span> <span class="_ _7"> </span><span class="ff4 sc1">HMOS</span></div><div class="t m0 x4 h5 y11 ff1 fs2 fc0 sc0 ls0 ws0"> <span class="_ _1"></span><span class="sc1">﹡<span class="ff4">8052/8752/8032<span class="_ _7"> </span></span>；<span class="_ _3"> </span><span class="ff3"> <span class="_ _7"> </span><span class="ff4">HMOS</span></span></span></div><div class="t m0 x4 h5 y12 ff1 fs2 fc0 sc0 ls0 ws0"> <span class="_ _1"></span><span class="sc1">﹡<span class="ff4">80C51/87C51/80C31<span class="_ _9"></span>　　CHMOS</span></span></div><div class="t m0 x4 h5 y13 ff4 fs2 fc0 sc1 ls0 ws0">　　　　<span class="ff1">﹡</span>80C52/87C52/80C32<span class="_ _7"> </span><span class="ff1">等<span class="ff5"> <span class="_ _a"> </span><span class="ff3"> <span class="_ _b"></span><span class="ff1">。<span class="_ _c"> </span><span class="ff4">CHMOS<span class="ff3"> </span></span></span></span></span></span></div></div></div><div class="pi" data-data='{"ctm":[1.333333,0.000000,0.000000,1.333333,0.000000,0.000000]}'></div></div>
<div id="pf3" class="pf w0 h0" data-page-no="3"><div class="pc pc3 w0 h0"><img class="bi x0 y0 w1 h1" alt="" src="https://static.pudn.com/prod/directory_preview_static/62fb45ab5425817ffc52f6e8/bg3.jpg"><div class="c x0 y1 w2 h2"><div class="t m0 x5 h4 y14 ff1 fs1 fc0 sc1 ls0 ws0">（<span class="_ _4"> </span><span class="ff3">2<span class="_"> </span></span><span class="sc0">）该系列生产工艺有两种：</span></div><div class="t m0 x6 h6 y15 ff3 fs3 fc0 sc1 ls0 ws0">CHMOS<span class="_ _6"> </span><span class="ff1">是<span class="_ _6"> </span></span>CMOS<span class="_ _6"> </span><span class="ff1">和<span class="_ _6"> </span></span>HMOS<span class="_ _d"> </span><span class="ff1 sc0">的<span class="_ _e"></span>结<span class="_ _e"></span>合<span class="_ _e"></span>，<span class="_ _f"></span>既</span></div><div class="t m0 x5 h6 y16 ff1 fs3 fc0 sc0 ls0 ws0">保<span class="_ _9"></span>持<span class="_ _10"></span>了<span class="_ _0"> </span><span class="ff3 sc1">HMOS<span class="_ _0"> </span></span>高<span class="_ _9"></span>速<span class="_ _10"></span>度<span class="_ _9"></span>和<span class="_ _10"></span>高<span class="_ _10"></span>密<span class="_ _9"></span>度<span class="_ _10"></span>的<span class="_ _9"></span>特<span class="_ _10"></span>点<span class="_ _9"></span>，<span class="_ _10"></span>还<span class="_ _10"></span>具</div><div class="t m0 x5 h6 y17 ff1 fs3 fc0 sc1 ls0 ws0">有<span class="_ _0"> </span><span class="ff3">CMOS<span class="_ _0"> </span></span><span class="sc0">的<span class="_ _10"></span>低<span class="_ _10"></span>功<span class="_ _10"></span>耗<span class="_ _10"></span>的<span class="_ _9"></span>特<span class="_ _10"></span>点<span class="_ _10"></span>。<span class="_ _11"></span><span class="fc1 sc2">在<span class="_ _10"></span>产<span class="_ _10"></span>品<span class="_ _9"></span>型<span class="_ _10"></span>号<span class="_ _10"></span>中<span class="_ _10"></span>凡</span></span></div><div class="t m0 x5 h6 y18 ff1 fs3 fc1 sc2 ls0 ws0">带<span class="_ _12"> </span>有<span class="_ _12"> </span>字<span class="_ _12"> </span>母<span class="_ _12"> </span>“<span class="_ _13"> </span><span class="ff3 sc1">C”<span class="_ _13"> </span></span>的<span class="_ _12"> </span>即<span class="_ _12"> </span>为<span class="_ _13"> </span><span class="ff3 sc1">CHMO<span class="_ _1"></span>S<span class="_ _13"> </span></span>芯</div><div class="t m0 x5 h6 y19 ff1 fs3 fc1 sc2 ls0 ws0">片<span class="_ _9"></span><span class="fc0 sc1">，<span class="_ _2"> </span><span class="ff3">C<span class="_ _1"></span>HMOS<span class="_ _14"> </span></span><span class="sc0">芯<span class="_ _9"></span>片<span class="_ _15"></span>的<span class="_ _15"></span>电<span class="_ _9"></span>平<span class="_ _15"></span>既<span class="_ _9"></span>与<span class="_ _14"> </span></span><span class="ff3">T<span class="_ _1"></span>TL<span class="_ _14"> </span></span><span class="sc0">电<span class="_ _15"></span>平<span class="_ _9"></span>兼<span class="_ _15"></span>容<span class="_ _9"></span>，</span></span></div><div class="t m0 x5 h6 y1a ff1 fs3 fc0 sc0 ls0 ws0">又与<span class="_ _4"> </span><span class="ff3 sc1">CMOS<span class="_ _16"> </span></span>电平兼容。</div><div class="t m0 x7 h4 y1b ff1 fs1 fc1 sc2 ls0 ws0">一<span class="_ _1"></span>是<span class="_ _14"> </span><span class="ff3 sc1">HMOS<span class="_"> </span></span>工<span class="_ _15"></span>艺<span class="_ _1"></span><span class="fc0 sc0">（<span class="_ _1"></span>高<span class="_ _15"></span>密度<span class="_ _17"></span>短<span class="_ _1"></span>沟<span class="_ _17"></span>道<span class="_ _14"> </span><span class="ff3 sc1">MOS<span class="_"> </span></span>工</span></div><div class="t m0 x5 h4 y1c ff1 fs1 fc0 sc0 ls0 ws0">艺<span class="_ _15"></span>）<span class="_ _15"></span>。<span class="_ _15"></span><span class="fc1 sc2">二<span class="_ _15"></span>是<span class="_ _0"> </span><span class="ff3 sc1">CHMO<span class="_ _1"></span>S<span class="_ _0"> </span></span>工<span class="_ _15"></span>艺<span class="_ _15"></span></span>（<span class="_ _15"></span>互<span class="_ _15"></span>补<span class="_ _15"></span>金<span class="_ _15"></span>属<span class="_ _15"></span>氧<span class="_ _15"></span>化<span class="_ _15"></span>物</div><div class="t m0 x5 h4 y1d ff1 fs1 fc0 sc1 ls0 ws0">的<span class="_ _4"> </span><span class="ff3">HMO<span class="_ _1"></span>S<span class="_"> </span></span><span class="sc0">工艺）。</span></div></div><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a></div><div class="pi" data-data='{"ctm":[1.333333,0.000000,0.000000,1.333333,0.000000,0.000000]}'></div></div>
<div id="pf4" class="pf w0 h0" data-page-no="4"><div class="pc pc4 w0 h0"><img class="bi x0 y0 w1 h1" alt="" src="https://static.pudn.com/prod/directory_preview_static/62fb45ab5425817ffc52f6e8/bg4.jpg"><div class="c x0 y1 w2 h2"><div class="t m0 x8 h4 y1e ff1 fs1 fc0 sc1 ls0 ws0">（<span class="_ _4"> </span><span class="ff3">3<span class="_"> </span></span><span class="sc0">）在功能上，该系列单片机有基本<span class="_ _1"></span>型</span></div><div class="t m0 x8 h4 y1f ff1 fs1 fc0 sc0 ls0 ws0">和增强型两大类：</div><div class="t m0 x1 h7 y20 ff1 fs4 fc1 sc2 ls0 ws0">增强型<span class="fc0 sc0">：</span></div><div class="t m0 x1 h8 y21 ff3 fs4 fc0 sc1 ls0 ws0">805<span class="fc1">2</span>/875<span class="fc1">2</span>/<span class="_ _1"></span>803<span class="fc1">2</span></div><div class="t m0 x1 h8 y22 ff3 fs4 fc0 sc1 ls0 ws0">80C5<span class="fc1">2</span>/87C5<span class="_ _1"></span><span class="fc1">2</span>/80C3<span class="_ _1"></span><span class="fc1">2</span></div><div class="t m0 x9 h4 y23 ff1 fs1 fc1 sc2 ls0 ws0">基本型<span class="fc0 sc0">：</span></div><div class="t m0 x9 h9 y24 ff3 fs1 fc0 sc1 ls0 ws0">805<span class="fc1">1<span class="_ _1"></span></span>/875<span class="_ _1"></span><span class="fc1">1</span>/803<span class="_ _1"></span><span class="fc1">1</span></div><div class="t m0 x9 h9 y25 ff3 fs1 fc0 sc1 ls0 ws0">80C5<span class="_ _1"></span><span class="fc1">1</span>/87C<span class="_ _1"></span>5<span class="fc1">1</span>/8<span class="_ _1"></span>0C3<span class="_ _1"></span><span class="fc1">1</span></div></div><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a></div><div class="pi" data-data='{"ctm":[1.333333,0.000000,0.000000,1.333333,0.000000,0.000000]}'></div></div>
<div id="pf5" class="pf w0 h0" data-page-no="5"><div class="pc pc5 w0 h0"><img class="bi x0 y0 w1 h1" alt="" src="https://static.pudn.com/prod/directory_preview_static/62fb45ab5425817ffc52f6e8/bg5.jpg"><div class="c x0 y1 w2 h2"><div class="t m0 xa h3 y26 ff1 fs0 fc0 sc1 ls0 ws0">（<span class="_"> </span><span class="ff3">4<span class="_ _18"> </span></span><span class="sc0">）<span class="_ _11"></span>在<span class="_ _11"></span>片<span class="_ _19"></span>内<span class="_ _11"></span>程<span class="_ _11"></span>序<span class="_ _19"></span>存<span class="_ _11"></span>储<span class="_ _11"></span>器<span class="_ _19"></span>的<span class="_ _11"></span>配<span class="_ _11"></span>置<span class="_ _19"></span>上<span class="_ _11"></span>，</span></div><div class="t m0 x1 h3 y27 ff1 fs0 fc0 sc0 ls0 ws0">该<span class="_ _f"></span>系<span class="_ _1a"></span>列<span class="_ _f"></span>单<span class="_ _1a"></span>片<span class="_ _f"></span>机<span class="_ _f"></span>有<span class="_ _1a"></span>三<span class="_ _f"></span>种<span class="_ _1a"></span>形<span class="_ _f"></span>式<span class="_ _1a"></span>，<span class="_ _f"></span>即<span class="_ _f"></span>掩<span class="_ _1a"></span>膜</div><div class="t m0 x1 h3 y28 ff3 fs0 fc0 sc1 ls0 ws0">ROM<span class="_ _c"> </span><span class="ff1">、<span class="_ _c"> </span></span>EPROM<span class="_ _1b"> </span><span class="ff1">和<span class="_ _c"> </span></span>ROMLess(<span class="_ _1b"> </span><span class="ff1 sc0">无<span class="_ _1a"></span>片</span></div><div class="t m0 x1 h3 y29 ff1 fs0 fc0 sc0 ls0 ws0">内程序存储器<span class="_ _0"> </span><span class="ff3 sc1">)<span class="_ _0"> </span></span>。如：</div><div class="t m0 xb h3 y2a ff1 fs0 fc0 sc1 ls0 ws0">﹡<span class="ff3">80C51<span class="_ _d"> </span></span>有<span class="_"> </span><span class="ff3">4K<span class="_ _d"> </span></span><span class="sc0">字<span class="_ _19"></span>节<span class="_ _11"></span>的<span class="_ _19"></span>掩<span class="_ _19"></span>膜<span class="_"> </span></span><span class="ff3">ROM<span class="_ _d"> </span></span><span class="sc0">；</span></div><div class="t m0 xb h3 y2b ff1 fs0 fc0 sc1 ls0 ws0">﹡<span class="ff3">87C51<span class="_ _0"> </span></span>有<span class="_ _0"> </span><span class="ff3">4K<span class="_ _0"> </span></span><span class="sc0">字节的<span class="_ _0"> </span></span><span class="ff3">EPROM <span class="_ _0"> </span></span><span class="sc0">；</span></div><div class="t m0 xb h3 y2c ff1 fs0 fc0 sc1 ls0 ws0">﹡<span class="ff3">80C31<span class="_ _0"> </span></span><span class="sc0">在芯片内无程序存储器。</span></div></div><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a></div><div class="pi" data-data='{"ctm":[1.333333,0.000000,0.000000,1.333333,0.000000,0.000000]}'></div></div>
单片机课件
