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</span></span><span style='font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"'>通用串行口</span><span lang=EN-US><span
style='mso-tab-count:6'> </span>
<span style='mso-tab-count:1'> </span></span><span
style='font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"'>中断控制器</span></p>
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<p class=MsoNormal><span lang=EN-US style='font-size:14.0pt;color:red'>8155</span><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'>：</span><span lang=EN-US
style='font-size:14.0pt;color:red'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"'>片内有</span><span lang=EN-US>256</span><span
style='font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"'>字节的</span><span lang=EN-US>RAM</span><span style='font-family:
宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"'>。</span></p>
<p class=MsoNormal><span lang=EN-US>AD0~AD7</span><span style='font-family:
宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"'>三态地址数据复用线可直接与</span><span
lang=EN-US>8031P0</span><span style='font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"'>口相连，做地址线用时由</span><span lang=EN-US>IO/~M</span><span
style='font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"'>信号来决定是存储器地址还是接口地址</span></p>
<p class=MsoNormal><span lang=EN-US>RESET</span><span style='font-family:宋体;
mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"'>复位，高电平有效。复位后各并口处于输入状态，</span><span
lang=EN-US>RESET</span><span style='font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"'>信号宽度必须大于</span><span lang=EN-US>600nS</span></p>
<p class=MsoNormal><span lang=EN-US>IO/~M</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>IO/~M=1AD0~AD7</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>IO</span><span style='font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"'>接口地址，</span><span lang=EN-US>IO/~M=0AD0~AD7</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>RAM</span><span style='font-family:
宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"'>地址</span></p>
<p class=MsoNormal><span lang=EN-US>ALE</span><span style='font-family:宋体;
mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"'>：下降沿将</span><span
lang=EN-US>AD0~AD7</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>~CE</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>IO/~M<span
style='mso-tab-count:1'> </span></span><span style='font-family:宋体;mso-ascii-font-family:
"Times New Roman";mso-hansi-font-family:"Times New Roman"'>的状态锁存在内部寄存器</span></p>
<p class=MsoNormal><span lang=EN-US>TIMERIN</span><span style='font-family:
宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"'>：定时器</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"'>计数器的时钟脉冲输入端</span></p>
<p class=MsoNormal><span lang=EN-US>~TIMEOUT</span><span style='font-family:
宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"'>：定时器</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"'>计数器的时钟脉冲输出端，由定时器</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"'>计数器工作方式决定输出波形。</span></p>
<table class=MsoTableSubtle1 border=0 cellspacing=0 cellpadding=0
style='border-collapse:collapse;mso-yfti-tbllook:480;mso-padding-alt:0cm 5.4pt 0cm 5.4pt'>
<tr style='mso-yfti-irow:-1'>
<td width=107 valign=top style='width:80.6pt;border-top:solid black 1.0pt;
border-left:none;border-bottom:solid black 1.5pt;border-right:solid black 1.5pt;
mso-border-top-alt:solid black .75pt;mso-border-bottom-alt:solid black 1.5pt;
mso-border-right-alt:solid black 1.5pt;padding:0cm 5.4pt 0cm 5.4pt'>
<p class=MsoNormal align=center style='text-align:center;mso-yfti-cnfc:5'><span
lang=EN-US>IO/~M</span></p>
</td>
<td width=57 valign=top style='width:42.55pt;border-top:solid black 1.0pt;
border-left:none;border-bottom:solid black 1.5pt;border-right:none;
mso-border-top-alt:solid black .75pt;mso-border-bottom-alt:solid black 1.5pt;
padding:0cm 5.4pt 0cm 5.4pt'>
<p class=MsoNormal align=center style='text-align:center;mso-yfti-cnfc:1'><span
lang=EN-US>AD2</span></p>
</td>
<td width=57 valign=top style='width:42.55pt;border-top:solid black 1.0pt;
border-left:none;border-bottom:solid black 1.5pt;border-right:none;
mso-border-top-alt:solid black .75pt;mso-border-bottom-alt:solid black 1.5pt;
padding:0cm 5.4pt 0cm 5.4pt'>
<p class=MsoNormal align=center style='text-align:center;mso-yfti-cnfc:1'><span
lang=EN-US>AD1</span></p>
</td>
<td width=57 valign=top style='width:42.55pt;border-top:solid black 1.0pt;
border-left:none;border-bottom:solid black 1.5pt;border-right:none;
mso-border-top-alt:solid black .75pt;mso-border-bottom-alt:solid black 1.5pt;
padding:0cm 5.4pt 0cm 5.4pt'>
<p class=MsoNormal align=center style='text-align:center;mso-yfti-cnfc:1'><span
lang=EN-US>AD0</span></p>
</td>
<td width=163 valign=top style='width:121.9pt;border-top:solid black 1.0pt;
border-left:solid black 1.5pt;border-bottom:solid black 1.5pt;border-right:
none;mso-border-top-alt:solid black .75pt;mso-border-left-alt:solid black 1.5pt;
mso-border-bottom-alt: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
lang=EN-US><o:p> </o:p></span></b></p>
</td>
</tr>
<tr style='mso-yfti-irow:0'>
<td width=107 rowspan=6 style='width:80.6pt;border:none;border-right:solid black 1.5pt;
background:#E6E6DD;mso-shading:white;mso-pattern:gray-25 olive;padding:0cm 5.4pt 0cm 5.4pt'>
<p class=MsoNormal align=center style='text-align:center;mso-yfti-cnfc:68'><span
lang=EN-US>1</span></p>
<p class=MsoNormal align=center style='text-align:center;mso-yfti-cnfc:68'><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>I/O</span><span style='font-family:
宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"'>口）</span></p>
</td>
<td width=57 valign=top style='width:42.55pt;border:none;border-bottom:solid black 1.0pt;
mso-border-bottom-alt:solid black .75pt;background:#E6E6DD;mso-shading:white;
mso-pattern:gray-25 olive;padding:0cm 5.4pt 0cm 5.4pt'>
<p class=MsoNormal align=center style='text-align:center;mso-yfti-cnfc:64'><span
lang=EN-US>0</span></p>
</td>
<td width=57 valign=top style='width:42.55pt;border:none;border-bottom:solid black 1.0pt;
mso-border-bottom-alt:solid black .75pt;background:#E6E6DD;mso-shading:white;
mso-pattern:gray-25 olive;padding:0cm 5.4pt 0cm 5.4pt'>
<p class=MsoNormal align=center style='text-align:center;mso-yfti-cnfc:64'><span
lang=EN-US>0</span></p>
</td>
<td width=57 valign=top style='width:42.55pt;border:none;border-bottom:solid black 1.0pt;
mso-border-bottom-alt:solid black .75pt;background:#E6E6DD;mso-shading:white;
mso-pattern:gray-25 olive;padding:0cm 5.4pt 0cm 5.4pt'>
<p class=MsoNormal align=center style='text-align:center;mso-yfti-cnfc:64'><span
lang=EN-US>0</span></p>
</td>
<td width=163 valign=top style='width:121.9pt;border-top:none;border-left:
solid black 1.5pt;border-bottom:solid black 1.0pt;border-right:none;
mso-border-left-alt:solid black 1.5pt;mso-border-bottom-alt:solid black .75pt;
background:#E6E6DD;mso-shading:white;mso-pattern:gray-25 olive;padding:0cm 5.4pt 0cm 5.4pt'>
<p class=MsoNormal align=center style='text-align:center;mso-yfti-cnfc:72'><span
style='font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"'>命令</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"'>状态口</span></p>
</td>
</tr>
<tr style='mso-yfti-irow:1'>
<td width=57 valign=top style='width:42.55pt;padding:0cm 5.4pt 0cm 5.4pt'>
<p class=MsoNormal align=center style='text-align:center'><span lang=EN-US>0</span></p>
</td>
<td width=57 valign=top style='width:42.55pt;padding:0cm 5.4pt 0cm 5.4pt'>
<p class=MsoNormal align=center style='text-align:center'><span lang=EN-US>0</span></p>
</td>
<td width=57 valign=top style='width:42.55pt;padding:0cm 5.4pt 0cm 5.4pt'>
<p class=MsoNormal align=center style='text-align:center'><span lang=EN-US>1</span></p>
</td>
<td width=163 valign=top style='width:121.9pt;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:8'><span
lang=EN-US>PA</span><span style='font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"'>口</span></p>
</td>
</tr>
<tr style='mso-yfti-irow:2'>
<td width=57 valign=top style='width:42.55pt;border:none;border-bottom:solid black 1.0pt;
mso-border-bottom-alt:solid black .75pt;background:#E6E6DD;mso-shading:white;
mso-pattern:gray-25 olive;padding:0cm 5.4pt 0cm 5.4pt'>
<p class=MsoNormal align=center style='text-align:center;mso-yfti-cnfc:64'><span
lang=EN-US>0</span></p>
</td>
<td width=57 valign=top style='width:42.55pt;border:none;border-bottom:solid black 1.0pt;
mso-border-bottom-alt:solid black .75pt;background:#E6E6DD;mso-shading:white;
mso-pattern:gray-25 olive;padding:0cm 5.4pt 0cm 5.4pt'>
<p class=MsoNormal align=center style='text-align:center;mso-yfti-cnfc:64'><span
lang=EN-US>1</span></p>
</td>
<td width=57 valign=top style='width:42.55pt;border:none;border-bottom:solid black 1.0pt;
mso-border-bottom-alt:solid black .75pt;background:#E6E6DD;mso-shading:white;
mso-pattern:gray-25 olive;padding:0cm 5.4pt 0cm 5.4pt'>
<p class=MsoNormal align=center style='text-align:center;mso-yfti-cnfc:64'><span
lang=EN-US>0</span></p>
</td>
<td width=163 valign=top style='width:121.9pt;border-top:none;border-left:
solid black 1.5pt;border-bottom:solid black 1.0pt;border-right:none;
mso-border-left-alt:solid black 1.5pt;mso-border-bottom-alt:solid black .75pt;
background:#E6E6DD;mso-shading:white;mso-pattern:gray-25 olive;padding:0cm 5.4pt 0cm 5.4pt'>
<p class=MsoNormal align=center style='text-align:center;mso-yfti-cnfc:72'><span
lang=EN-US>PB</span><span style='font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"'>口</span></p>
</td>
</tr>
<tr style='mso-yfti-irow:3'>
<td width=57 valign=top style='width:42.55pt;padding:0cm 5.4pt 0cm 5.4pt'>
<p class=MsoNormal align=center style='text-align:center'><span lang=EN-US>0</span></p>
</td>
<td width=57 valign=top style='width:42.55pt;padding:0cm 5.4pt 0cm 5.4pt'>
<p class=MsoNormal align=center style='text-align:center'><span lang=EN-US>1</span></p>
</td>
<td width=57 valign=top style='width:42.55pt;padding:0cm 5.4pt 0cm 5.4pt'>
<p class=MsoNormal align=center style='text-align:center'><span lang=EN-US>1</span></p>
</td>
<td width=163 valign=top style='width:121.9pt;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:8'><span
lang=EN-US>PC</span><span style='font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"'>口</span></p>
</td>
</tr>
<tr style='mso-yfti-irow:4'>
<td width=57 valign=top style='width:42.55pt;border:none;border-bottom:solid black 1.0pt;
mso-border-bottom-alt:solid black .75pt;background:#E6E6DD;mso-shading:white;
mso-pattern:gray-25 olive;padding:0cm 5.4pt 0cm 5.4pt'>
<p class=MsoNormal align=center style='text-align:center;mso-yfti-cnfc:64'><span
lang=EN-US>1</span></p>
</td>
<td width=57 valign=top style='width:42.55pt;border:none;border-bottom:solid black 1.0pt;
mso-border-bottom-alt:solid black .75pt;background:#E6E6DD;mso-shading:white;
mso-pattern:gray-25 olive;padding:0cm 5.4pt 0cm 5.4pt'>
<p class=MsoNormal align=center style='text-align:center;mso-yfti-cnfc:64'><span
lang=EN-US>0</span></p>
</td>
<td width=57 valign=top style='width:42.55pt;border:none;border-bottom:solid black 1.0pt;
mso-border-bottom-alt:solid black .75pt;background:#E6E6DD;mso-shading:white;
mso-pattern:gray-25 olive;padding:0cm 5.4pt 0cm 5.4pt'>
<p class=MsoNormal align=center style='text-align:center;mso-yfti-cnfc:64'><span
lang=EN-US>0</span></p>
</td>
<td width=163 valign=top style='width:121.9pt;border-top:none;border-left:
solid black 1.5pt;border-bottom:solid black 1.0pt;border-right:none;
mso-border-left-alt:solid black 1.5pt;mso-border-bottom-alt:solid black .75pt;
background:#E6E6DD;mso-shading:white;mso-pattern:gray-25 olive;padding:0cm 5.4pt 0cm 5.4pt'>
<p class=MsoNormal align=center style='text-align:center;mso-yfti-cnfc:72'><span
lang=EN-US>TIME </span><span style='font-family:宋体;mso-ascii-font-family:
"Times New Roman";mso-hansi-font-family:"Times New Roman"'>低八位</span></p>
</td>
</tr>
<tr style='mso-yfti-irow:5'>
<td width=57 valign=top style='width:42.55pt;padding:0cm 5.4pt 0cm 5.4pt'>
<p class=MsoNormal align=center style='text-align:center'><span lang=EN-US>1</span></p>
</td>
<td width=57 valign=top style='width:42.55pt;padding:0cm 5.4pt 0cm 5.4pt'>
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