📄 串行ad转换器tlc2543与51单片机的接口设计 - 21ic中国电子网.htm
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<H1 class=aTitle>串行AD转换器TLC2543与51单片机的接口设计</H1></DIV>
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<TD width=120>[日期:<SPAN id=TimeLabel>2007-6-19</SPAN>]</TD>
<TD align=middle>来源:<SPAN id=SourceLabel>仪表技术 </SPAN> 作者:<SPAN
id=AuthorLabel>李映颖 王海军 孟祥谦</SPAN></TD>
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<P> </P>
<P><STRONG>摘
要</STRONG>:介绍一种多通道高精度串行A/D转换器TLC2543的主要特点、工作原理,给出了TLC2543与51系列单片机的接口电路及驱动程序。<!--摘要CH(结束)←--><BR><!--→关键CH(开始)--><B>关键词</B>:串行外设接口;单片机;接口<!--关键CH(结束)←--><!--→标题EN(开始)--><STRONG>
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<P><FONT
face=宋体> TLC2543是11个输入端的12位模数转换器,具有转换快、稳定性好、与微处理器接口简单、价格低等优点,应用前景好。由于它带有串行外设接口(SPI,Seri-al
PeripheralInterface),而51系列单片机没有SPI,因此研究它与51单片机的接口就非常有意义。<BR><B><FONT
size=4><BR></FONT><FONT
size=2>1 TLC2543的引脚及功能<BR></FONT></B> TLC2543是12位开关电容逐次逼近模数转换器,有多种封装形式,其中DB、DW或N封装的管脚图见图1。引脚的功能简要分类说明如下。</FONT></P>
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