8251内部资源.htm

51 bian cheng bang zhu

<p class=MsoNormal><span lang=EN-US>TF2</span><span style='font-family:宋体;
mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"'>：计数器溢出标志，当允许中断时将引起中断，必须软件清零，</span><span
lang=EN-US>TF2=1</span><span style='font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"'>有溢出，</span><span lang=EN-US>TF2=0</span><span
style='font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"'>，无溢出</span></p>

<p class=MsoNormal><span lang=EN-US><span style='mso-tab-count:1'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span><span
style='mso-spacerun:yes'>&nbsp;</span></span><span style='font-family:宋体;
mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"'>如果</span><span
lang=EN-US>RCLK=1</span><span style='font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"'>或</span><span lang=EN-US>TCLK=1</span><span
style='font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"'>，此位无效。</span></p>

<p class=MsoNormal><span lang=EN-US>EXF2</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>T2</span><span style='font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"'>外部标志。当外部使能位</span><span lang=EN-US>EXEN2=1</span><span
style='font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"'>，且</span><span lang=EN-US>T2EX</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>P1.1</span><span style='font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"'>）有一个下降沿时产生</span><span lang=EN-US>,EXF2</span><span
style='font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"'>被置</span><span lang=EN-US>1</span></p>

<p class=MsoNormal style='margin-left:21.0pt;mso-para-margin-left:2.0gd;
text-indent:15.75pt;mso-char-indent-count:1.5'><span style='font-family:宋体;
mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"'>如果允许</span><span
lang=EN-US>T2</span><span style='font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"'>中断</span><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"'>将引起中断</span><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"'>必须软件清零。</span></p>

<p class=MsoNormal><span lang=EN-US>TCLK</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>RCLK</span><span style='font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"'>：发送时钟，接收时钟允许，如果置</span><span
lang=EN-US>TCLK</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>RCLK</span><span
style='font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"'>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"'>，则串行通讯（方式</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"'>，</span><span lang=EN-US>3</span><span
style='font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"'>）使</span></p>

<p class=MsoNormal style='margin-left:63.0pt;mso-para-margin-left:6.0gd;
text-indent:10.5pt;mso-char-indent-count:1.0'><span style='font-family:宋体;
mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"'>用</span><span
lang=EN-US>T2</span><span style='font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"'>做波特率发生器分别产生发送时钟和接收时钟两个可以分别控制。如果</span><span
lang=EN-US>TCLK</span></p>

<p class=MsoNormal style='margin-left:63.0pt;mso-para-margin-left:6.0gd;
text-indent:10.5pt;mso-char-indent-count:1.0'><span style='font-family:宋体;
mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"'>或</span><span
lang=EN-US>RCLK</span><span style='font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"'>为</span><span lang=EN-US>0</span><span
style='font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"'>，则定时器</span><span lang=EN-US>T1</span><span
style='font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"'>作为串行口的波特率发生器。</span></p>

<p class=MsoNormal><span lang=EN-US>TR2</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>T2</span><span style='font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"'>的启动</span><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"'>停止位。</span><span lang=EN-US>TR2=1</span><span
style='font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"'>启动</span><span lang=EN-US>T2</span><span style='font-family:
宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"'>工作，</span><span
lang=EN-US>TR2=0</span><span style='font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"'>停止</span><span lang=EN-US>T2</span><span
style='font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"'>工作。</span></p>

<p class=MsoNormal><span lang=EN-US>C/T2</span><span style='font-family:宋体;
mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"'>：定时</span><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"'>计数选择，</span><span lang=EN-US>C/T2=1</span><span
style='font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"'>工作于计数方式，对</span><span lang=EN-US>P1.0</span><span
style='font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"'>脚输入脉冲的下降沿计数，</span><span lang=EN-US>C/T2=0</span><span
style='font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"'>工作于</span></p>

<p class=MsoNormal style='text-indent:31.5pt;mso-char-indent-count:3.0'><span
style='font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"'>定时方式对</span><span lang=EN-US>fosc/12</span><span
style='font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"'>的脉冲计数。</span></p>

<p class=MsoNormal><span lang=EN-US>CP/RL2</span><span style='font-family:宋体;
mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"'>：捕捉</span><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"'>重装方式选择，</span><span lang=EN-US>CP/RL2=1</span><span
style='font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"'>，工作于捕捉方式</span><span lang=EN-US>TH2</span><span lang=EN-US
style='font-family:Wingdings;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman";mso-char-type:symbol;mso-symbol-font-family:
Wingdings'><span style='mso-char-type:symbol;mso-symbol-font-family:Wingdings'>à</span></span><span
lang=EN-US>RCAP2H,TL2</span><span lang=EN-US style='font-family:Wingdings;
mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman";
mso-char-type:symbol;mso-symbol-font-family:Wingdings'><span style='mso-char-type:
symbol;mso-symbol-font-family:Wingdings'>à</span></span><span lang=EN-US>RCAP2L</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>CP/RL2</span></p>

<p class=MsoNormal><span lang=EN-US><span style='mso-tab-count:2'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span>=0</span><span
style='font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"'>，工作于重装方式</span><span lang=EN-US>RCAP2H</span><span
lang=EN-US style='font-family:Wingdings;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman";mso-char-type:symbol;mso-symbol-font-family:
Wingdings'><span style='mso-char-type:symbol;mso-symbol-font-family:Wingdings'>à</span></span><span
lang=EN-US>TH2,RCAP2L</span><span lang=EN-US style='font-family:Wingdings;
mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman";
mso-char-type:symbol;mso-symbol-font-family:Wingdings'><span style='mso-char-type:
symbol;mso-symbol-font-family:Wingdings'>à</span></span><span lang=EN-US>TL2</span></p>

<p class=MsoNormal><span lang=EN-US>T2</span><span style='font-family:宋体;
mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"'>的工作方式：</span><span
lang=EN-US><o:p></o:p></span></p>

<table class=MsoTableColumns1 border=1 cellspacing=0 cellpadding=0
 style='border-collapse:collapse;border:none;mso-border-alt:solid black 1.5pt;
 mso-yfti-tbllook:480;mso-padding-alt:0cm 5.4pt 0cm 5.4pt'>
 <tr style='mso-yfti-irow:-1'>
  <td width=132 style='width:99.25pt;border-top:solid black 1.5pt;border-left:
  solid black 1.5pt;border-bottom:double black 2.25pt;border-right:none;
  padding:0cm 5.4pt 0cm 5.4pt'>
  <p class=MsoNormal align=center style='text-align:center;mso-yfti-cnfc:5'><span
  lang=EN-US>RCLK+RCLK</span></p>
  </td>
  <td width=132 style='width:99.25pt;border-top:solid black 1.5pt;border-left:
  none;border-bottom:double black 2.25pt;border-right:none;background:#BFBFBF;
  mso-shading:white;mso-pattern:gray-25 black;padding:0cm 5.4pt 0cm 5.4pt'>
  <p class=MsoNormal align=center style='text-align:center;mso-yfti-cnfc:17'><span
  lang=EN-US>CP/~RL2</span></p>
  </td>
  <td width=132 style='width:99.25pt;border-top:solid black 1.5pt;border-left:
  none;border-bottom:double black 2.25pt;border-right:none;background:#FFFFDD;
  mso-shading:white;mso-pattern:gray-25 yellow;padding:0cm 5.4pt 0cm 5.4pt'>
  <p class=MsoNormal align=center style='text-align:center;mso-yfti-cnfc:33'><span
  lang=EN-US>TR2</span></p>
  </td>
  <td width=132 style='width:99.25pt;border-top:solid black 1.5pt;border-left:
  none;border-bottom:double black 2.25pt;border-right:solid black 1.5pt;
  padding:0cm 5.4pt 0cm 5.4pt'>
  <p class=MsoNormal align=center style='text-align:center;mso-yfti-cnfc:265'><b><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></b></p>
  </td>
 </tr>
 <tr style='mso-yfti-irow:0'>
  <td width=132 style='width:99.25pt;border:none;border-left:solid black 1.5pt;
  padding:0cm 5.4pt 0cm 5.4pt'>
  <p class=MsoNormal align=center style='text-align:center;mso-yfti-cnfc:4'><span
  lang=EN-US>0</span></p>
  </td>
  <td width=132 style='width:99.25pt;border:none;background:#BFBFBF;mso-shading:
  white;mso-pattern:gray-25 black;padding:0cm 5.4pt 0cm 5.4pt'>
  <p class=MsoNormal align=center style='text-align:center;mso-yfti-cnfc:16'><b><span
  lang=EN-US>0<o:p></o:p></span></b></p>
  </td>
  <td width=132 style='width:99.25pt;border:none;background:#FFFFDD;mso-shading:
  white;mso-pattern:gray-25 yellow;padding:0cm 5.4pt 0cm 5.4pt'>
  <p class=MsoNormal align=center style='text-align:center;mso-yfti-cnfc:32'><b><span
  lang=EN-US>1<o:p></o:p></span></b></p>
  </td>
  <td width=132 style='width:99.25pt;border:none;border-right:solid black 1.5pt;
  padding:0cm 5.4pt 0cm 5.4pt'>
  <p class=MsoNormal align=center style='text-align:center;mso-yfti-cnfc:8'><span
  lang=EN-US>16</span><span style='font-family:宋体;mso-ascii-font-family:"Times New Roman";
  mso-hansi-font-family:"Times New Roman"'>位自动重装</span></p>
  </td>
 </tr>
 <tr style='mso-yfti-irow:1'>
  <td width=132 style='width:99.25pt;border:none;border-left:solid black 1.5pt;
  padding:0cm 5.4pt 0cm 5.4pt'>
  <p class=MsoNormal align=center style='text-align:center;mso-yfti-cnfc:4'><span
  lang=EN-US>0</span></p>
  </td>
  <td width=132 style='width:99.25pt;border:none;background:#BFBFBF;mso-shading:
  white;mso-pattern:gray-25 black;padding:0cm 5.4pt 0cm 5.4pt'>
  <p class=MsoNormal align=center style='text-align:center;mso-yfti-cnfc:16'><b><span
  lang=EN-US>1<o:p></o:p></span></b></p>
  </td>
  <td width=132 style='width:99.25pt;border:none;background:#FFFFDD;mso-shading:
  white;mso-pattern:gray-25 yellow;padding:0cm 5.4pt 0cm 5.4pt'>
  <p class=MsoNormal align=center style='text-align:center;mso-yfti-cnfc:32'><b><span
  lang=EN-US>1<o:p></o:p></span></b></p>
  </td>
  <td width=132 style='width:99.25pt;border:none;border-right:solid black 1.5pt;
  padding:0cm 5.4pt 0cm 5.4pt'>
  <p class=MsoNormal align=center style='text-align:center;mso-yfti-cnfc:8'><span
  lang=EN-US>16</span><span style='font-family:宋体;mso-ascii-font-family:"Times New Roman";
  mso-hansi-font-family:"Times New Roman"'>位捕捉方式</span></p>
  </td>
 </tr>
 <tr style='mso-yfti-irow:2'>
  <td width=132 style='width:99.25pt;border:none;border-left:solid black 1.5pt;
  padding:0cm 5.4pt 0cm 5.4pt'>
  <p class=MsoNormal align=center style='text-align:center;mso-yfti-cnfc:4'><span
  lang=EN-US>1</span></p>
  </td>
  <td width=132 style='width:99.25pt;border:none;background:#BFBFBF;mso-shading: