⭐ 欢迎来到虫虫下载站！ | 📦 资源下载 📁 资源专辑 ℹ️ 关于我们
⭐ 虫虫下载站
📤 上传资源

📄 新型实时时钟芯片ds12887原理与应用.htm

📁 一个单片机＋实时时钟芯片实现的万年历程序
💻 HTM
📖 第 1 页 / 共 3 页
字号:
🔍
123 
          <TD borderColor=#ffffff borderColorLight=#000000 align=middle 
          borderColorDark=#000000><FONT face=楷体_GB2312 size=1>BIT6</FONT></TD>
          <TD borderColor=#ffffff borderColorLight=#000000 align=middle 
          borderColorDark=#000000><FONT face=楷体_GB2312 size=1>BIT5</FONT></TD>
          <TD borderColor=#ffffff borderColorLight=#000000 align=middle 
          borderColorDark=#000000><FONT face=楷体_GB2312 size=1>BIT4</FONT></TD>
          <TD borderColor=#ffffff borderColorLight=#000000 align=middle 
          borderColorDark=#000000><FONT face=楷体_GB2312 size=1>BIT3</FONT></TD>
          <TD borderColor=#ffffff borderColorLight=#000000 align=middle 
          borderColorDark=#000000><FONT face=楷体_GB2312 size=1>BIT2</FONT></TD>
          <TD borderColor=#ffffff borderColorLight=#000000 align=middle 
          borderColorDark=#000000><FONT face=楷体_GB2312 size=1>BIT1</FONT></TD>
          <TD borderColor=#ffffff borderColorLight=#000000 align=middle 
          borderColorDark=#000000><FONT face=楷体_GB2312 
size=1>BIT0</FONT></TD></TR>
        <TR>
          <TD borderColor=#ffffff borderColorLight=#000000 align=middle 
          borderColorDark=#000000><FONT face=楷体_GB2312 size=1>UIP</FONT></TD>
          <TD borderColor=#ffffff borderColorLight=#000000 align=middle 
          borderColorDark=#000000><FONT face=楷体_GB2312 size=1>DV2</FONT></TD>
          <TD borderColor=#ffffff borderColorLight=#000000 align=middle 
          borderColorDark=#000000><FONT face=楷体_GB2312 size=1>DV1</FONT></TD>
          <TD borderColor=#ffffff borderColorLight=#000000 align=middle 
          borderColorDark=#000000><FONT face=楷体_GB2312 size=1>DV0</FONT></TD>
          <TD borderColor=#ffffff borderColorLight=#000000 align=middle 
          borderColorDark=#000000><FONT face=楷体_GB2312 size=1>RS3</FONT></TD>
          <TD borderColor=#ffffff borderColorLight=#000000 align=middle 
          borderColorDark=#000000><FONT face=楷体_GB2312 size=1>RS2</FONT></TD>
          <TD borderColor=#ffffff borderColorLight=#000000 align=middle 
          borderColorDark=#000000><FONT face=楷体_GB2312 size=1>RS1</FONT></TD>
          <TD borderColor=#ffffff borderColorLight=#000000 align=middle 
          borderColorDark=#000000><FONT face=楷体_GB2312 
        size=1>RS0</FONT></TD></TR></TBODY></TABLE>&nbsp;&nbsp;&nbsp; <FONT 
      face=宋体 
      size=2>UIP：更新周期正在进行位。当UIP为1，更新转换将很快发生，当UIP为0，更新转换至少在244</FONT><FONT 
      face=宋体 size=2>&micro;s内不会发生。<BR>&nbsp;&nbsp;&nbsp; 
      DV0，DV1，DV2：用于开关晶振和复位分频链。这些位的010唯一组合将打开晶振并允许RTC计时。<BR>&nbsp;&nbsp;&nbsp; 
      表1列了邮周期中断率和方波频率。<BR>&nbsp;&nbsp;&nbsp; 
      RS3，RS2，RS1，RS0：频率选择位，从15级频率器13个抽头中选一个，或禁止分频器输入，选择好的抽头用于产生方波(SQW管脚)输出和周期中断，用户可以：<BR>&nbsp;&nbsp;&nbsp; 
      (1)用PIE位允许中断：<BR>&nbsp;&nbsp;&nbsp; 
      (2)用SQWE位允许SQAW输出；<BR>&nbsp;&nbsp;&nbsp; 
      (3)二者同时允许并用相同的频率；<BR>&nbsp;&nbsp;&nbsp; (4)都不允许<BR><B>4.2 寄存器B</B></FONT> 
      <TABLE cellSpacing=1 width=450 border=1>
        <TBODY>
        <TR>
          <TD borderColor=#ffffff borderColorLight=#000000 align=middle><FONT 
            face=楷体_GB2312 size=1>BIT7</FONT></TD>
          <TD borderColor=#ffffff borderColorLight=#000000 align=middle><FONT 
            face=楷体_GB2312 size=1>BIT6</FONT></TD>
          <TD borderColor=#ffffff borderColorLight=#000000 align=middle><FONT 
            face=楷体_GB2312 size=1>BIT5</FONT></TD>
          <TD borderColor=#ffffff borderColorLight=#000000 align=middle><FONT 
            face=楷体_GB2312 size=1>BIT4</FONT></TD>
          <TD borderColor=#ffffff borderColorLight=#000000 align=middle><FONT 
            face=楷体_GB2312 size=1>BIOT</FONT><FONT face=楷体_GB2312 
          size=1>3</FONT></TD>
          <TD borderColor=#ffffff borderColorLight=#000000 align=middle><FONT 
            face=楷体_GB2312 size=1>BIT</FONT><FONT face=楷体_GB2312 
          size=1>2</FONT></TD>
          <TD borderColor=#ffffff borderColorLight=#000000 align=middle><FONT 
            face=楷体_GB2312 size=1>BIT</FONT><FONT face=楷体_GB2312 
          size=1>2</FONT></TD>
          <TD borderColor=#ffffff borderColorLight=#000000 align=middle><FONT 
            face=楷体_GB2312 size=1>BIT1</FONT></TD></TR>
        <TR>
          <TD borderColor=#ffffff borderColorLight=#000000 align=middle><FONT 
            face=楷体_GB2312 size=1>SET</FONT></TD>
          <TD borderColor=#ffffff borderColorLight=#000000 align=middle><FONT 
            face=楷体_GB2312 size=1>PIE</FONT></TD>
          <TD borderColor=#ffffff borderColorLight=#000000 align=middle><FONT 
            face=楷体_GB2312 size=1>ALE0</FONT></TD>
          <TD borderColor=#ffffff borderColorLight=#000000 align=middle><FONT 
            face=楷体_GB2312 size=1>VIE</FONT></TD>
          <TD borderColor=#ffffff borderColorLight=#000000 align=middle><FONT 
            face=楷体_GB2312 size=1>SQWE</FONT></TD>
          <TD borderColor=#ffffff borderColorLight=#000000 align=middle><FONT 
            face=楷体_GB2312 size=1>DM</FONT></TD>
          <TD borderColor=#ffffff borderColorLight=#000000 align=middle><FONT 
            face=楷体_GB2312 size=1>24/12</FONT></TD>
          <TD borderColor=#ffffff borderColorLight=#000000 align=middle><FONT 
            face=楷体_GB2312 size=1>DSE</FONT></TD></TR></TBODY></TABLE><FONT face=宋体 
      size=2>&nbsp;&nbsp;&nbsp; 
      SET：SET为0，时间更新正常进行，每秒计数走时一次，当SET位写入1，时间更新被禁止，程序可初始化时间和日历字节。<BR>&nbsp;&nbsp;&nbsp; 
      PIE：周期中断劲旅位，PIE为1，则允许以选定的频率拉低IRQ管脚，产和不足齿数民：PIE为0，则禁止中断。<BR>&nbsp;&nbsp;&nbsp; 
      AIE：定闹中断允许位，PIE为1，允许中断，否则禁止中断。<BR>&nbsp;&nbsp;&nbsp; 
      SQWE：方波允许位，置1选定频率方波从SQW脚输出；为0-时，SQW脚为低。<BR>&nbsp;&nbsp;&nbsp; 
      DM：数据模式位，DM为1青蛙为十进制数据，而0表明是BCD码的数据。<BR>&nbsp;&nbsp;&nbsp; 
      24/12：小时格式位，1表明24小时械，而0表明12小时械。<BR>&nbsp;&nbsp;&nbsp; 
      DSE：P夏令时允许位，当DSE置1时允许两个特殊的更新，在四月份的第一时期日、时间从1：59：59AM时改变为1：00：00AM，当DSE位为0，这种特殊修正不发生。<BR><B>4.3 
      寄存器C</B></FONT> 
      <TABLE cellSpacing=1 width=450 border=1>
        <TBODY>
        <TR>
          <TD borderColor=#ffffff borderColorLight=#000000 align=middle 
          borderColorDark=#000000><FONT face=楷体_GB2312 size=1>BIT7</FONT></TD>
          <TD borderColor=#ffffff borderColorLight=#000000 align=middle 
          borderColorDark=#000000><FONT face=楷体_GB2312 size=1>BIY6</FONT></TD>
          <TD borderColor=#ffffff borderColorLight=#000000 align=middle 
          borderColorDark=#000000><FONT face=楷体_GB2312 size=1>BIT5</FONT></TD>
          <TD borderColor=#ffffff borderColorLight=#000000 align=middle 
          borderColorDark=#000000><FONT face=楷体_GB2312 size=1>BIT4</FONT></TD>
          <TD borderColor=#ffffff borderColorLight=#000000 align=middle 
          borderColorDark=#000000><FONT face=楷体_GB2312 size=1>BIT3</FONT></TD>
          <TD borderColor=#ffffff borderColorLight=#000000 align=middle 
          borderColorDark=#000000><FONT face=楷体_GB2312 size=1>BIT2</FONT></TD>
          <TD borderColor=#ffffff borderColorLight=#000000 align=middle 
          borderColorDark=#000000><FONT face=楷体_GB2312 size=1>BIT1</FONT></TD>
          <TD borderColor=#ffffff borderColorLight=#000000 align=middle 
          borderColorDark=#000000><FONT face=楷体_GB2312 
size=1>BIT0</FONT></TD></TR>
        <TR>
          <TD borderColor=#ffffff borderColorLight=#000000 align=middle 
          borderColorDark=#000000><FONT face=楷体_GB2312 size=1>IRQF</FONT></TD>
          <TD borderColor=#ffffff borderColorLight=#000000 align=middle 
          borderColorDark=#000000><FONT face=楷体_GB2312 size=1>PF</FONT></TD>
          <TD borderColor=#ffffff borderColorLight=#000000 align=middle 
          borderColorDark=#000000><FONT face=楷体_GB2312 size=1>AF</FONT></TD>
          <TD borderColor=#ffffff borderColorLight=#000000 align=middle 
          borderColorDark=#000000><FONT face=楷体_GB2312 size=1>VF</FONT></TD>
123

⌨️ 快捷键说明

复制代码 Ctrl + C
搜索代码 Ctrl + F
全屏模式 F11
切换主题 Ctrl + Shift + D
显示快捷键 ?
增大字号 Ctrl + =
减小字号 Ctrl + -