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<td align="right"><b><font style="font-size:16px" color="#990000">——
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<td colspan="2"><font style="font-size:16px" color="#000000"><b>>> <a href="index.htm">PIC16CXXX单片机应用与设计</a>
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<td align="center"><b><font size="3">第五章 PIC16C62X单片机</font><font size="3"></font></b></td>
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<td height="300"> <p>§5.12 中 断<br>
<br>
PIC16C62X有4种中断源：<br>
1.INT外部触发中断；<br>
2.TMR0溢出中断；<br>
3.PORTB电平变化中断；<br>
4.比较器中断。<br>
其中断控制寄存器INTCON如下：</p>
<p align="center"><img src="image/a295.gif" width="526" height="610"></p>
<p>中断发生逻辑如下：</p>
<p align="center"><img src="image/a296.gif" width="575" height="236"></p>
<p align="center">图5.17 16C62X中断逻辑</p>
<p>前3种中断和其他的PIC16CXX完全一样，第4种中断请参阅§5.11.6。<br>
至于中断处理中的注意事项以及中断现场保护例程等和PIC16C61一样，请参阅§1.13.4。</p>
<p> <br>
§5.13 CPU特性<br>
<br>
PIC16C62X和其他PIC16CXX一样具备多种微控制器特性如多种振荡方式选择、看门狗、掉电复位锁定、程序保密位及多种复位方式、上电定时器PWRTE和起振延时器OST等等，这些内容都和其他PIC16CXX一样，请参阅§1.13。另外PIC16C62X都有内部"掉电复位锁定"电路，可以由用户用烧写器选择使能或关闭，它的标志位则在PCON寄存器中，见图5.5。</p>
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<p><a href="PIC16Cxxx-1.htm">第一章</a> <a href="PIC16Cxxx-2.htm">第二章</a>
<a href="PIC16Cxxx-3.htm">第三章</a> <a href="PIC16Cxxx-4.htm">第四章</a>
<a href="PIC16Cxxx-5.htm">第五章</a> <a href="PIC16Cxxx-6.htm">第六章</a>
<a href="PIC16Cxxx-7.htm">第七章</a> <a href="PIC16Cxxx-8.htm">第八章</a>
<a href="PIC16Cxxx-9.htm">第九章</a> <a href="PIC16Cxxx-10.htm">第十章</a></p></td>
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