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📄 8051工作方式.htm

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  none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;
  mso-border-top-alt:solid windowtext .5pt;mso-border-left-alt:solid windowtext .5pt;
  mso-border-alt:solid windowtext .5pt;padding:0cm 5.4pt 0cm 5.4pt'>
  <p class=MsoNormal align=center style='text-align:center'><span lang=EN-US>IDL</span></p>
  </td>
 </tr>
</table>

<p class=MsoNormal style='margin-left:28.5pt'><span lang=EN-US><o:p>&nbsp;</o:p></span></p>

<p class=MsoNormal style='margin-left:28.5pt'><span lang=EN-US>SMOD</span><span
style='font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"'>：串行口波特率加倍控制位。</span></p>

<p class=MsoNormal style='margin-left:28.5pt'><span lang=EN-US>GF0 GF1</span><span
style='font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"'>：通用标志位，由用户置位或复位。</span></p>

<p class=MsoNormal style='margin-left:28.5pt'><span lang=EN-US>PD</span><span
style='font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"'>：掉电方式位，为</span><span lang=EN-US>1</span><span
style='font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"'>进入掉电工作方式。</span></p>

<p class=MsoNormal style='margin-left:28.5pt'><span lang=EN-US>IDL</span><span
style='font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"'>：待机工作方式，为</span><span lang=EN-US>1</span><span
style='font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"'>进入待机工作方式。</span></p>

<p class=MsoNormal style='margin-left:28.5pt'><span lang=EN-US>PD</span><span
style='font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"'>和</span><span lang=EN-US>IDL</span><span style='font-family:
宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"'>同时为</span><span
lang=EN-US>1</span><span style='font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"'>进入掉电工作方式。可用指令设置。</span></p>

<p class=MsoNormal style='margin-left:39.0pt;text-indent:-18.0pt;mso-list:l1 level2 lfo2;
tab-stops:list 39.0pt'><![if !supportLists]><span lang=EN-US style='mso-fareast-font-family:
"Times New Roman"'><span style='mso-list:Ignore'>1）<span style='font:7.0pt "Times New Roman"'>&nbsp;
</span></span></span><![endif]><span style='font-family:宋体;mso-ascii-font-family:
"Times New Roman";mso-hansi-font-family:"Times New Roman"'>待机工作方式：</span><span
lang=EN-US>ORL PCON</span><span style='font-family:宋体;mso-ascii-font-family:
"Times New Roman";mso-hansi-font-family:"Times New Roman"'>，</span><span
lang=EN-US>#00000001B</span><span style='font-family:宋体;mso-ascii-font-family:
"Times New Roman";mso-hansi-font-family:"Times New Roman"'>，使</span><span
lang=EN-US>IDL</span><span style='font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"'>位为</span><span lang=EN-US>1</span><span
style='font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"'>，工作电流</span><span lang=EN-US>1.7mA~5mA,</span></p>

<p class=MsoNormal style='margin-left:21.0pt;mso-para-margin-left:2.0gd;
text-indent:21.0pt;mso-char-indent-count:2.0'><span lang=EN-US>(</span><span
style='font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"'>正常</span><span lang=EN-US>11~20mA),ALE</span><span
style='font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"'>和</span><span lang=EN-US>~PSEN</span><span style='font-family:
宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"'>保持高电平。退出待机工作方式：一是激活任何开</span></p>

<p class=MsoNormal style='margin-left:21.0pt;mso-para-margin-left:2.0gd;
text-indent:21.0pt;mso-char-indent-count:2.0'><span style='font-family:宋体;
mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"'>放的中断，在中断</span><span
lang=EN-US>RETI</span><span style='font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"'>返回指令后下一条要执行的指令，正是待机后的下一条指</span></p>

<p class=MsoNormal style='margin-left:21.0pt;mso-para-margin-left:2.0gd;
text-indent:21.0pt;mso-char-indent-count:2.0'><span style='font-family:宋体;
mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"'>令，</span><span
lang=EN-US>CPU</span><span style='font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"'>工作继续。二是单片机复位。</span></p>

<p class=MsoNormal style='margin-left:39.0pt;text-indent:-18.0pt;mso-list:l1 level2 lfo2;
tab-stops:list 39.0pt'><![if !supportLists]><span lang=EN-US style='mso-fareast-font-family:
"Times New Roman"'><span style='mso-list:Ignore'>2）<span style='font:7.0pt "Times New Roman"'>&nbsp;
</span></span></span><![endif]><span style='font-family:宋体;mso-ascii-font-family:
"Times New Roman";mso-hansi-font-family:"Times New Roman"'>掉电方式：</span><span
lang=EN-US>PCON</span><span style='font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"'>的</span><span lang=EN-US>DP</span><span
style='font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"'>位控制单片机进入掉电保护方式。单片机检测到电源掉电</span></p>

<p class=MsoNormal style='margin-left:39.0pt'><span style='font-family:宋体;
mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"'>将有用的信息转存到片内存储器低</span><span
lang=EN-US>128B</span><span style='font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"'>内，并使</span><span lang=EN-US>PD</span><span
style='font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"'>置</span><span lang=EN-US>1</span><span style='font-family:
宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"'>，进入掉电方式，此期间</span></p>

<p class=MsoNormal style='margin-left:39.0pt'><span style='font-family:宋体;
mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"'>电源可降致</span><span
lang=EN-US>2V</span><span style='font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"'>，但当电源恢复正常</span><span lang=EN-US>5V</span><span
style='font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"'>后，硬件复位须维持</span><span lang=EN-US>10ms</span><span
style='font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"'>，单片机才会退</span></p>

<p class=MsoNormal style='margin-left:39.0pt'><span style='font-family:宋体;
mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"'>出掉电方式。</span></p>

<p class=MsoNormal style='margin-left:21.0pt;text-indent:-21.0pt;mso-list:l1 level1 lfo2;
tab-stops:list 21.0pt'><![if !supportLists]><span lang=EN-US style='font-size:
14.0pt;mso-fareast-font-family:"Times New Roman";color:red'><span
style='mso-list:Ignore'>2.<span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></span></span><![endif]><span style='font-size:14.0pt;font-family:宋体;
mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman";
color:red'>编程方式：</span><a name=BC></a><span style='font-family:宋体;mso-ascii-font-family:
"Times New Roman";mso-hansi-font-family:"Times New Roman"'>引脚接线图</span></p>

<p class=MsoNormal><span lang=EN-US><span
style='mso-spacerun:yes'>&nbsp;&nbsp;&nbsp; </span><!--[if gte vml 1]><v:shapetype
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<p class=MsoNormal><span lang=EN-US><o:p>&nbsp;</o:p></span></p>

<table class=MsoTableColumns5 border=1 cellspacing=0 cellpadding=0
 style='border-collapse:collapse;border:none;mso-border-alt:solid gray 1.5pt;
 mso-yfti-tbllook:480;mso-padding-alt:0cm 5.4pt 0cm 5.4pt;mso-border-insidev:
 .75pt solid silver'>
 <tr style='mso-yfti-irow:-1'>
  <td width=57 valign=top style='width:42.55pt;border-top:gray 1.5pt;
  border-left:gray 1.5pt;border-bottom:gray 1.0pt;border-right:silver 1.0pt;
  border-style:solid;mso-border-top-alt:gray 1.5pt;mso-border-left-alt:gray 1.5pt;
  mso-border-bottom-alt:gray .75pt;mso-border-right-alt:silver .75pt;
  mso-border-style-alt:solid;padding:0cm 5.4pt 0cm 5.4pt'>
  <p class=MsoNormal align=center style='text-align:center;mso-yfti-cnfc:5'><b><i><span
  style='font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
  "Times New Roman"'>方式</span><span lang=EN-US><o:p></o:p></span></i></b></p>
  </td>
  <td width=57 valign=top style='width:42.55pt;border-top:solid gray 1.5pt;
  border-left:none;border-bottom:solid gray 1.0pt;border-right:solid silver 1.0pt;
  mso-border-left-alt:solid silver .75pt;mso-border-top-alt:gray 1.5pt;
  mso-border-left-alt:silver .75pt;mso-border-bottom-alt:gray .75pt;mso-border-right-alt:
  silver .75pt;mso-border-style-alt:solid;background:silver;mso-shading:white;
  mso-pattern:solid silver;padding:0cm 5.4pt 0cm 5.4pt'>
  <p class=MsoNormal align=center style='text-align:center;mso-yfti-cnfc:17'><b><i><span
  lang=EN-US>RST<o:p></o:p></span></i></b></p>
  </td>
  <td width=57 valign=top style='width:42.55pt;border-top:solid gray 1.5pt;
  border-left:none;border-bottom:solid gray 1.0pt;border-right:solid silver 1.0pt;
  mso-border-left-alt:solid silver .75pt;mso-border-top-alt:gray 1.5pt;
  mso-border-left-alt:silver .75pt;mso-border-bottom-alt:gray .75pt;mso-border-right-alt:
  silver .75pt;mso-border-style-alt:solid;padding:0cm 5.4pt 0cm 5.4pt'>
  <p class=MsoNormal align=center style='text-align:center;mso-yfti-cnfc:33'><b><i><span
  lang=EN-US>~PSEN<o:p></o:p></span></i></b></p>
  </td>
  <td width=57 valign=top style='width:42.55pt;border-top:solid gray 1.5pt;
  border-left:none;border-bottom:solid gray 1.0pt;border-right:solid silver 1.0pt;
  mso-border-left-alt:solid silver .75pt;mso-border-top-alt:gray 1.5pt;
  mso-border-left-alt:silver .75pt;mso-border-bottom-alt:gray .75pt;mso-border-right-alt:
  silver .75pt;mso-border-style-alt:solid;background:silver;mso-shading:white;
  mso-pattern:solid silver;padding:0cm 5.4pt 0cm 5.4pt'>
  <p class=MsoNormal align=center style='text-align:center;mso-yfti-cnfc:17'><b><i><span
  lang=EN-US>~EA/VPP<o:p></o:p></span></i></b></p>
  </td>
  <td width=57 valign=top style='width:42.55pt;border-top:solid gray 1.5pt;
  border-left:none;border-bottom:solid gray 1.0pt;border-right:solid silver 1.0pt;
  mso-border-left-alt:solid silver .75pt;mso-border-top-alt:gray 1.5pt;
  mso-border-left-alt:silver .75pt;mso-border-bottom-alt:gray .75pt;mso-border-right-alt:
  silver .75pt;mso-border-style-alt:solid;padding:0cm 5.4pt 0cm 5.4pt'>
  <p class=MsoNormal align=center style='text-align:center;mso-yfti-cnfc:33'><b><i><span
  lang=EN-US>ALE/`PROG<o:p></o:p></span></i></b></p>
  </td>
  <td width=57 valign=top style='width:42.55pt;border-top:solid gray 1.5pt;
  border-left:none;border-bottom:solid gray 1.0pt;border-right:solid silver 1.0pt;
  mso-border-left-alt:solid silver .75pt;mso-border-top-alt:gray 1.5pt;
  mso-border-left-alt:silver .75pt;mso-border-bottom-alt:gray .75pt;mso-border-right-alt:
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  mso-pattern:solid silver;padding:0cm 5.4pt 0cm 5.4pt'>
  <p class=MsoNormal align=center style='text-align:center;mso-yfti-cnfc:17'><b><i><span
  lang=EN-US>P2</span></i></b><b><i><span style='font-family:宋体;mso-ascii-font-family:
  "Times New Roman";mso-hansi-font-family:"Times New Roman"'>。</span><span
  lang=EN-US>7<o:p></o:p></span></i></b></p>
  </td>
  <td width=57 valign=top style='width:42.55pt;border-top:solid gray 1.5pt;
  border-left:none;border-bottom:solid gray 1.0pt;border-right:solid silver 1.0pt;
  mso-border-left-alt:solid silver .75pt;mso-border-top-alt:gray 1.5pt;
  mso-border-left-alt:silver .75pt;mso-border-bottom-alt:gray .75pt;mso-border-right-alt:
  silver .75pt;mso-border-style-alt:solid;padding:0cm 5.4pt 0cm 5.4pt'>
  <p class=MsoNormal align=center style='text-align:center;mso-yfti-cnfc:33'><b><i><span
  lang=EN-US>P2</span></i></b><b><i><span style='font-family:宋体;mso-ascii-font-family:
  "Times New Roman";mso-hansi-font-family:"Times New Roman"'>。</span><span
  lang=EN-US>6<o:p></o:p></span></i></b></p>
  </td>
  <td width=57 valign=top style='width:42.55pt;border-top:solid gray 1.5pt;
  border-left:none;border-bottom:solid gray 1.0pt;border-right:solid silver 1.0pt;
  mso-border-left-alt:solid silver .75pt;mso-border-top-alt:gray 1.5pt;
  mso-border-left-alt:silver .75pt;mso-border-bottom-alt:gray .75pt;mso-border-right-alt:
  silver .75pt;mso-border-style-alt:solid;background:silver;mso-shading:white;
  mso-pattern:solid silver;padding:0cm 5.4pt 0cm 5.4pt'>
  <p class=MsoNormal align=center style='text-align:center;mso-yfti-cnfc:17'><b><i><span
  lang=EN-US>P2</span></i></b><b><i><span style='font-family:宋体;mso-ascii-font-family:
  "Times New Roman";mso-hansi-font-family:"Times New Roman"'>。</span><span
  lang=EN-US>5<o:p></o:p></span></i></b></p>
  </td>
  <td width=57 valign=top style='width:42.55pt;border-top:solid gray 1.5pt;
  border-left:none;border-bottom:solid gray 1.0pt;border-right:solid gray 1.5pt;
  mso-border-left-alt:solid silver .75pt;mso-border-top-alt:gray 1.5pt;
  mso-border-left-alt:silver .75pt;mso-border-bottom-alt:gray .75pt;mso-border-right-alt:
  gray 1.5pt;mso-border-style-alt:solid;padding:0cm 5.4pt 0cm 5.4pt'>
  <p class=MsoNormal align=center style='text-align:center;mso-yfti-cnfc:9'><b><i><span
  lang=EN-US>P2</span></i></b><b><i><span style='font-family:宋体;mso-ascii-font-family:
  "Times New Roman";mso-hansi-font-family:"Times New Roman"'>。</span><span
  lang=EN-US>4<o:p></o:p></span></i></b></p>
  </td>
 </tr>
 <tr style='mso-yfti-irow:0'>
  <td width=57 valign=top style='width:42.55pt;border-top:none;border-left:
  solid gray 1.5pt;border-bottom:none;border-right:solid silver 1.0pt;
  mso-border-left-alt:solid gray 1.5pt;mso-border-right-alt:solid silver .75pt;
  padding:0cm 5.4pt 0cm 5.4pt'>
  <p class=MsoNormal align=center style='text-align:center;mso-yfti-cnfc:4'><b><span
  style='font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
  "Times New Roman"'>编程</span><span lang=EN-US><o:p></o:p></span></b></p>
  </td>
  <td
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