<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE eagle SYSTEM "eagle.dtd">
<eagle version="9.6.2">
  <drawing>
    <settings><setting alwaysvectorfont="no"/><setting verticaltext="up"/></settings>
    <grid distance="0.1" unitdist="mm" unit="mm" style="lines" multiple="1" display="yes" altdistance="0.05" altunitdist="mm" altunit="mm"/>
    <layers>
      <layer number="1" name="Top" color="4" fill="1" visible="yes" active="yes"/>
      <layer number="16" name="Bottom" color="1" fill="1" visible="yes" active="yes"/>
      <layer number="17" name="Pads" color="2" fill="1" visible="yes" active="yes"/>
      <layer number="18" name="Vias" color="2" fill="1" visible="yes" active="yes"/>
      <layer number="21" name="tPlace" color="7" fill="1" visible="yes" active="yes"/>
      <layer number="25" name="tNames" color="7" fill="1" visible="yes" active="yes"/>
      <layer number="27" name="tValues" color="7" fill="1" visible="yes" active="yes"/>
      <layer number="29" name="tStop" color="7" fill="3" visible="no" active="yes"/>
      <layer number="31" name="tCream" color="7" fill="4" visible="no" active="yes"/>
      <layer number="39" name="tKeepout" color="4" fill="11" visible="yes" active="yes"/>
      <layer number="41" name="tRestrict" color="4" fill="10" visible="yes" active="yes"/>
      <layer number="51" name="tDocu" color="7" fill="1" visible="yes" active="yes"/>
      <layer number="94" name="Symbols" color="4" fill="1" visible="yes" active="yes"/>
      <layer number="95" name="Names" color="7" fill="1" visible="yes" active="yes"/>
      <layer number="96" name="Values" color="7" fill="1" visible="yes" active="yes"/>
    </layers>
    <library>
      <packages>
        <package name="C39831289_QFN-28_4x4">
          <description>CH9142 — Clean-Room Clean-Room Metric Synthesis (QFN)</description>
          <smd name="0" x="0.0" y="0.0" dx="2.7" dy="2.7" layer="1" cream="no"/>
          <rectangle x1="-1.198" y1="-1.198" x2="-0.152" y2="-0.152" layer="31"/>
          <rectangle x1="-1.198" y1="0.152" x2="-0.152" y2="1.198" layer="31"/>
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          <rectangle x1="0.152" y1="0.152" x2="1.198" y2="1.198" layer="31"/>
          <smd name="28" x="-2.0" y="-1.2" dx="0.7" dy="0.2" layer="1" roundness="25"/>
          <smd name="27" x="-2.0" y="-0.8" dx="0.7" dy="0.2" layer="1" roundness="25"/>
          <smd name="26" x="-2.0" y="-0.4" dx="0.7" dy="0.2" layer="1" roundness="25"/>
          <smd name="25" x="-2.0" y="0.0" dx="0.7" dy="0.2" layer="1" roundness="25"/>
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          <smd name="20" x="-0.8" y="2.0" dx="0.2" dy="0.7" layer="1" roundness="25"/>
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          <smd name="14" x="2.0" y="1.2" dx="0.7" dy="0.2" layer="1" roundness="25"/>
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          <smd name="8" x="2.0" y="-1.2" dx="0.7" dy="0.2" layer="1" roundness="25"/>
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          <smd name="2" x="-0.8" y="-2.0" dx="0.2" dy="0.7" layer="1" roundness="25"/>
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          <wire x1="2.0" y1="1.52" x2="2.0" y2="2.0" width="0.15" layer="21"/>
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          <circle x="-1.75" y="-2.0" radius="0.18" width="0" layer="21"/>
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          <wire x1="2.6" y1="-2.6" x2="2.6" y2="2.6" width="0.05" layer="39"/>
          <wire x1="2.6" y1="2.6" x2="-2.6" y2="2.6" width="0.05" layer="39"/>
          <wire x1="-2.6" y1="2.6" x2="-2.6" y2="-2.6" width="0.05" layer="39"/>
          <text x="-2.6" y="3.2" size="1.0" layer="25">&gt;NAME</text>
          <text x="-2.6" y="-4.2" size="1.0" layer="27">&gt;VALUE</text>
        </package>
      </packages>
      <symbols>
        <symbol name="CH9142_SYM">
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          <wire x1="15.24" y1="-20.32" x2="15.24" y2="20.32" width="0.254" layer="94"/>
          <wire x1="15.24" y1="20.32" x2="-15.24" y2="20.32" width="0.254" layer="94"/>
          <wire x1="-15.24" y1="20.32" x2="-15.24" y2="-20.32" width="0.254" layer="94"/>
          <text x="-15.24" y="21.59" size="1.778" layer="95">&gt;NAME</text>
          <text x="-15.24" y="-22.86" size="1.778" layer="96">&gt;VALUE</text>
          <pin name="GND" x="-20.32" y="17.78" length="middle" direction="io"/>
          <pin name="BLEDTA1" x="-20.32" y="15.24" length="middle" direction="io"/>
          <pin name="BLESTA0" x="-20.32" y="12.7" length="middle" direction="io"/>
          <pin name="AT1" x="-20.32" y="10.16" length="middle" direction="io"/>
          <pin name="LED1" x="-20.32" y="7.62" length="middle" direction="io"/>
          <pin name="SLEEP" x="-20.32" y="5.08" length="middle" direction="io"/>
          <pin name="LED0/RELOAD" x="-20.32" y="2.54" length="middle" direction="io"/>
          <pin name="VDD_A" x="-20.32" y="0.0" length="middle" direction="io"/>
          <pin name="ANT" x="-20.32" y="-2.54" length="middle" direction="io"/>
          <pin name="VINTA" x="-20.32" y="-5.08" length="middle" direction="io"/>
          <pin name="X32MI" x="-20.32" y="-7.62" length="middle" direction="io"/>
          <pin name="X32MO" x="-20.32" y="-10.16" length="middle" direction="io"/>
          <pin name="NC" x="-20.32" y="-12.7" length="middle" direction="io"/>
          <pin name="RST#" x="-20.32" y="-15.24" length="middle" direction="io"/>
          <pin name="RXD0" x="-20.32" y="-17.78" length="middle" direction="io"/>
          <pin name="TXD0" x="20.32" y="-17.78" length="middle" direction="io" rot="R180"/>
          <pin name="CTS0#" x="20.32" y="-15.24" length="middle" direction="io" rot="R180"/>
          <pin name="RTS0/TNOW0" x="20.32" y="-12.7" length="middle" direction="io" rot="R180"/>
          <pin name="RXD1" x="20.32" y="-10.16" length="middle" direction="io" rot="R180"/>
          <pin name="TXD1" x="20.32" y="-7.62" length="middle" direction="io" rot="R180"/>
          <pin name="CTS1" x="20.32" y="-5.08" length="middle" direction="io" rot="R180"/>
          <pin name="RTS1#/TNOW1" x="20.32" y="-2.54" length="middle" direction="io" rot="R180"/>
          <pin name="X32KO" x="20.32" y="0.0" length="middle" direction="io" rot="R180"/>
          <pin name="X32KI" x="20.32" y="2.54" length="middle" direction="io" rot="R180"/>
          <pin name="VDD_D" x="20.32" y="5.08" length="middle" direction="io" rot="R180"/>
          <pin name="NC_7" x="20.32" y="7.62" length="middle" direction="io" rot="R180"/>
          <pin name="AT0" x="20.32" y="10.16" length="middle" direction="io" rot="R180"/>
          <pin name="VCC" x="20.32" y="12.7" length="middle" direction="io" rot="R180"/>
          <pin name="VSW" x="20.32" y="15.24" length="middle" direction="io" rot="R180"/>
        </symbol>
      </symbols>
      <devicesets>
        <deviceset name="CH9142" prefix="U">
          <gates>
            <gate name="G$1" symbol="CH9142_SYM" x="0" y="0"/>
          </gates>
          <devices>
            <device name="" package="C39831289_QFN-28_4x4">
              <connects>
                <connect gate="G$1" pin="GND" pad="0"/>
                <connect gate="G$1" pin="BLEDTA1" pad="28"/>
                <connect gate="G$1" pin="BLESTA0" pad="27"/>
                <connect gate="G$1" pin="AT1" pad="26"/>
                <connect gate="G$1" pin="LED1" pad="25"/>
                <connect gate="G$1" pin="SLEEP" pad="24"/>
                <connect gate="G$1" pin="LED0/RELOAD" pad="23"/>
                <connect gate="G$1" pin="VDD_A" pad="22"/>
                <connect gate="G$1" pin="ANT" pad="21"/>
                <connect gate="G$1" pin="VINTA" pad="20"/>
                <connect gate="G$1" pin="X32MI" pad="19"/>
                <connect gate="G$1" pin="X32MO" pad="18"/>
                <connect gate="G$1" pin="NC" pad="17"/>
                <connect gate="G$1" pin="RST#" pad="16"/>
                <connect gate="G$1" pin="RXD0" pad="15"/>
                <connect gate="G$1" pin="TXD0" pad="14"/>
                <connect gate="G$1" pin="CTS0#" pad="13"/>
                <connect gate="G$1" pin="RTS0/TNOW0" pad="12"/>
                <connect gate="G$1" pin="RXD1" pad="11"/>
                <connect gate="G$1" pin="TXD1" pad="10"/>
                <connect gate="G$1" pin="CTS1" pad="9"/>
                <connect gate="G$1" pin="RTS1#/TNOW1" pad="8"/>
                <connect gate="G$1" pin="X32KO" pad="1"/>
                <connect gate="G$1" pin="X32KI" pad="2"/>
                <connect gate="G$1" pin="VDD_D" pad="3"/>
                <connect gate="G$1" pin="NC_7" pad="7"/>
                <connect gate="G$1" pin="AT0" pad="6"/>
                <connect gate="G$1" pin="VCC" pad="5"/>
                <connect gate="G$1" pin="VSW" pad="4"/>
              </connects>
            </device>
          </devices>
        </deviceset>
      </devicesets>
    </library>
  </drawing>
</eagle>
