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<p class=MsoNormal align=center style='text-align:center;line-height:
14.0pt'><span lang=EN-US style='font-size:10.0pt;color:#000088'><img
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<p align=center style='text-align:center;line-height:14.0pt'><span
lang=EN-US style='font-size:9.0pt;color:#000088'> </span><span
style='font-size:9.0pt;color:#000088'>这是<span lang=EN-US>12</span>位转化后得到的<span
lang=EN-US>12</span>位数据，存储在<span lang=EN-US>18B20</span>的两个<span
lang=EN-US>8</span>比特的<span lang=EN-US>RAM</span>中，二进制中的前面<span
lang=EN-US>5</span>位是符号位，如果测得的温度大于<span lang=EN-US>0</span>，这<span
lang=EN-US>5</span>位为<span lang=EN-US>0</span>，只要将测到的数值乘于<span
lang=EN-US>0.0625</span>即可得到实际温度；如果温度小于<span lang=EN-US>0</span>，这<span
lang=EN-US>5</span>位为<span lang=EN-US>1</span>，测到的数值需要取反加<span
lang=EN-US>1</span>再乘于<span lang=EN-US>0.0625</span>即可得到实际温度。 <span
lang=EN-US><o:p></o:p></span></span></p>
<p align=center style='text-align:center;line-height:14.0pt'><span
lang=EN-US style='font-size:9.0pt;color:#000088'> </span><span
style='font-size:9.0pt;color:#000088'>例如<span lang=EN-US>+<st1:chmetcnv
UnitName="℃" SourceValue="125" HasSpace="False" Negative="False"
NumberType="1" TCSC="0" w:st="on">125<span lang=EN-US><span lang=EN-US>℃</span></span></st1:chmetcnv><span
lang=EN-US>的数字输出为07D0H</span></span>，<span lang=EN-US>+<st1:chmetcnv
UnitName="℃" SourceValue="25.0625" HasSpace="False" Negative="False"
NumberType="1" TCSC="0" w:st="on">25.0625<span lang=EN-US><span
lang=EN-US>℃</span></span></st1:chmetcnv><span lang=EN-US>的数字输出为0191H</span></span>，<st1:chmetcnv
UnitName="℃" SourceValue="25.0625" HasSpace="False" Negative="True"
NumberType="1" TCSC="0" w:st="on"><span lang=EN-US>-25.0625</span>℃</st1:chmetcnv>的数字输出为<span
lang=EN-US>FF6FH</span>，<st1:chmetcnv UnitName="℃" SourceValue="55"
HasSpace="False" Negative="True" NumberType="1" TCSC="0" w:st="on"><span
lang=EN-US>-55</span>℃</st1:chmetcnv>的数字输出为<span lang=EN-US>FC90H</span>。
<span lang=EN-US><o:p></o:p></span></span></p>
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<p class=MsoNormal align=center style='text-align:center;line-height:
14.0pt'><strong><span style='font-size:10.0pt;font-family:宋体;
mso-bidi-font-family:宋体;color:#000088'>表<span lang=EN-US>2:</span></span></strong><span
class=style1101><span lang=EN-US style='font-size:10.0pt;color:#000088'>
DS18B20</span></span><span class=style1101><span style='font-size:10.0pt;
color:#000088'>温度数据表 </span></span><span lang=EN-US style='font-size:
9.0pt;color:#000088'><o:p></o:p></span></p>
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<p class=MsoNormal align=center style='text-align:center;line-height:
14.0pt'><span lang=EN-US style='font-size:10.0pt;color:#000088'><img
border=0 width=468 height=295 id="_x0000_i1042"
src="ds18sy12_files/ds09.jpg"><o:p></o:p></span></p>
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<p align=center style='text-align:center;line-height:14.0pt'><span
lang=EN-US style='font-size:9.0pt;color:#000088'> </span><span
style='font-size:9.0pt;color:#000088'>（<span lang=EN-US>3</span>）<span
lang=EN-US>DS18B20</span>温度传感器的存储器 <span lang=EN-US><o:p></o:p></span></span></p>
<p align=center style='text-align:center;line-height:14.0pt'><span
lang=EN-US style='font-size:9.0pt;color:#000088'> DS18B20</span><span
style='font-size:9.0pt;color:#000088'>温度传感器的内部存储器包括一个高速暂存<span
lang=EN-US>RAM</span>和一个非易失性的可电擦除的<span lang=EN-US>EEPRAM,</span>后者存放高温度和低温度触发器<span
lang=EN-US>TH</span>、<span lang=EN-US>TL</span>和结构寄存器。 <span lang=EN-US><o:p></o:p></span></span></p>
<p align=center style='text-align:center;line-height:14.0pt'><span
lang=EN-US style='font-size:9.0pt;color:#000088'> </span><span
style='font-size:9.0pt;color:#000088'>（<span lang=EN-US>4</span>）配置寄存器 <span
lang=EN-US><o:p></o:p></span></span></p>
<p align=center style='text-align:center;line-height:14.0pt'><span
style='font-size:9.0pt;color:#000088'>该字节各位的意义如下：<span lang=EN-US><o:p></o:p></span></span></p>
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<td width="45%" valign=top style='width:45.0%;padding:.75pt .75pt .75pt .75pt'>
<p class=MsoNormal align=center style='text-align:center;line-height:
14.0pt'><strong><span style='font-size:9.0pt;font-family:宋体;mso-bidi-font-family:
宋体;color:#000088'>表<span lang=EN-US>3</span>：</span></strong><span
style='font-size:9.0pt;color:#000088'> 配置寄存器结构 <span lang=EN-US><o:p></o:p></span></span></p>
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<p class=MsoNormal align=center style='text-align:center;line-height:
14.0pt'><span lang=EN-US style='font-size:9.0pt;color:#000088'>TM<o:p></o:p></span></p>
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<td width="12%" style='width:12.0%;padding:.75pt .75pt .75pt .75pt;
height:25.5pt'>
<p class=MsoNormal align=center style='text-align:center;line-height:
14.0pt'><span lang=EN-US style='font-size:9.0pt;color:#000088'>R1<o:p></o:p></span></p>
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<td width="12%" style='width:12.0%;padding:.75pt .75pt .75pt .75pt;
height:25.5pt'>
<p class=MsoNormal align=center style='text-align:center;line-height:
14.0pt'><span lang=EN-US style='font-size:9.0pt;color:#000088'>R0<o:p></o:p></span></p>
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<td width="12%" style='width:12.0%;padding:.75pt .75pt .75pt .75pt;
height:25.5pt'>
<p class=MsoNormal align=center style='text-align:center;line-height:
14.0pt'><span lang=EN-US style='font-size:9.0pt;color:#000088'>1<o:p></o:p></span></p>
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<td width="12%" style='width:12.0%;padding:.75pt .75pt .75pt .75pt;
height:25.5pt'>
<p class=MsoNormal align=center style='text-align:center;line-height:
14.0pt'><span lang=EN-US style='font-size:9.0pt;color:#000088'>1<o:p></o:p></span></p>
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<td width="12%" style='width:12.0%;padding:.75pt .75pt .75pt .75pt;
height:25.5pt'>
<p class=MsoNormal align=center style='text-align:center;line-height:
14.0pt'><span lang=EN-US style='font-size:9.0pt;color:#000088'>1<o:p></o:p></span></p>
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<td width="14%" style='width:14.0%;padding:.75pt .75pt .75pt .75pt;
height:25.5pt'>
<p class=MsoNormal align=center style='text-align:center;line-height:
14.0pt'><span lang=EN-US style='font-size:9.0pt;color:#000088'>1<o:p></o:p></span></p>
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<td width="14%" style='width:14.0%;padding:.75pt .75pt .75pt .75pt;
height:25.5pt'>
<p class=MsoNormal align=center style='text-align:center;line-height:
14.0pt'><span lang=EN-US style='font-size:9.0pt;color:#000088'>1<o:p></o:p></span></p>
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<p class=MsoNormal align=center style='text-align:center;line-height:
14.0pt'><span lang=EN-US style='font-size:10.0pt;color:#000088'><o:p></o:p></span></p>
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<p align=center style='text-align:center;line-height:14.0pt'><span
lang=EN-US style='font-size:9.0pt;color:#000088'> </span><span
style='font-size:9.0pt;color:#000088'>低五位一直都是<span lang=EN-US>"1"</span>，<span
lang=EN-US>TM</span>是测试模式位，用于设置<span lang=EN-US>DS18B20</span>在工作模式还是在测试模式。在<span
lang=EN-US>DS18B20</span>出厂时该位被设置为<span lang=EN-US>0</span>，用户不要去改动。<span
lang=EN-US>R1</span>和<span lang=EN-US>R0</span>用来设置分辨率，如下表所示：（<span
lang=EN-US>DS18B20</span>出厂时被设置为<span lang=EN-US>12</span>位）<span
lang=EN-US><o:p></o:p></span></span></p>
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style='width:66.0%;mso-cellspacing:1.5pt'>
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<td width="45%" valign=top style='width:45.0%;padding:.75pt .75pt .75pt .75pt'>
<p class=MsoNormal align=center style='text-align:center;line-height:
14.0pt'><strong><span style='font-size:9.0pt;font-family:宋体;mso-bidi-font-family:
宋体;color:#000088'>表<span lang=EN-US>4</span>：</span></strong><span
style='font-size:9.0pt;color:#000088'> 温度分辨率设置表<span lang=EN-US><o:p></o:p></span></span></p>
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<table class=MsoNormalTable border=1 cellspacing=0 cellpadding=0
width="81%" style='width:81.0%;mso-cellspacing:0cm'
bordercolorlight="#128288" bordercolordark="#ffffff">
<tr style='mso-yfti-irow:0;mso-yfti-firstrow:yes;height:25.5pt'>
<td width="20%" style='width:20.0%;padding:.75pt .75pt .75pt .75pt;
height:25.5pt'>
<p class=MsoNormal align=center style='text-align:center;line-height:
14.0pt'><span lang=EN-US style='font-size:9.0pt;color:#000088'>R1<o:p></o:p></span></p>
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<td width="21%" style='width:21.0%;padding:.75pt .75pt .75pt .75pt;
height:25.5pt'>
<p class=MsoNormal align=center style='text-align:center;line-height:
14.0pt'><span lang=EN-US style='font-size:9.0pt;color:#000088'>R0<o:p></o:p></span></p>
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<td width="22%" style='width:22.0%;padding:.75pt .75pt .75pt .75pt;
height:25.5pt'>
<p class=MsoNormal align=center style='text-align:center;line-height:
14.0pt'><span style='font-size:9.0pt;color:#000088'>分辨率<span
lang=EN-US><o:p></o:p></span></span></p>
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<td width="37%" style='width:37.0%;padding:.75pt .75pt .75pt .75pt;
height:25.5pt'>
<p class=MsoNormal align=center style='text-align:center;line-height:
14.0pt'><span style='font-size:9.0pt;color:#000088'>温度最大转换时间<span
lang=EN-US><o:p></o:p></span></span></p>
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<td style='padding:.75pt .75pt .75pt .75pt;height:25.5pt'>
<p class=MsoNormal align=center style='text-align:center;line-height:
14.0pt'><span lang=EN-US style='font-size:9.0pt;color:#000088'>0<o:p></o:p></span></p>
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<td style='padding:.75pt .75pt .75pt .75pt;height:25.5pt'>
<p class=MsoNormal align=center style='text-align:center;line-height:
14.0pt'><span lang=EN-US style='font-size:9.0pt;color:#000088'>0<o:p></o:p></span></p>
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<td style='padding:.75pt .75pt .75pt .75pt;height:25.5pt'>
<p class=MsoNormal align=center style='text-align:center;line-height:
14.0pt'><span lang=EN-US style='font-size:9.0pt;color:#000088'>9</span><span
style='font-size:9.0pt;color:#000088'>位<span lang=EN-US><o:p></o:p></span></span></p>
</td>
<td style='padding:.75pt .75pt .75pt .75pt;height:25.5pt'>
<p align=center style='text-align:center;line-height:14.0pt'><span
lang=EN-US style='font-size:9.0pt;color:#000088'>93.75ms <o:p></o:p></span></p>
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<td style='padding:.75pt .75pt .75pt .75pt;height:25.5pt'>
<p class=MsoNormal align=center style='text-align:center;line-height:
14.0pt'><span lang=EN-US style='font-size:9.0pt;color:#000088'>0<o:p></o:p></span></p>
</td>
<td style='padding:.75pt .75pt .75pt .75pt;height:25.5pt'>
<p class=MsoNormal align=center style='text-align:center;line-height:
14.0pt'><span lang=EN-US style='font-size:9.0pt;color:#000088'>1<o:p></o:p></span></p>
</td>
<td style='padding:.75pt .75pt .75pt .75pt;height:25.5pt'>
<p class=MsoNormal align=center style='text-align:center;line-height:
14.0pt'><span lang=EN-US style='font-size:9.0pt;color:#000088'>10</span><span
style='font-size:9.0pt;color:#000088'>位<span lang=EN-US><o:p></o:p></span></span></p>
</td>
<td style='padding:.75pt .75pt .75pt .75pt;height:25.5pt'>
<p align=center style='text-align:center;line-height:14.0pt'><span
lang=EN-US style='font-size:9.0pt;color:#000088'>187.5ms <o:p></o:p></span></p>
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<tr style='mso-yfti-irow:3;height:25.5pt'>
<td style='padding:.75pt .75pt .75pt .75pt;height:25.5pt'>
<p class=MsoNormal align=center style='text-align:center;line-height:
14.0pt'><span lang=EN-US style='font-size:9.0pt;color:#000088'>1<o:p></o:p></span></p>
</td>
<td style='padding:.75pt .75pt .75pt .75pt;height:25.5pt'>
<p class=MsoNormal align=center style='text-align:center;line-height:
14.0pt'><span lang=EN-US style='font-size:9.0pt;color:#000088'>0<o:p></o:p></span></p>
</td>
<td style='padding:.75pt .75pt .75pt .75pt;height:25.5pt'>
<p class=MsoNormal align=center style='text-align:center;line-height:
14.0pt'><span lang=EN-US style='font-size:9.0pt;color:#000088'>11</span><span
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