<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE eagle SYSTEM "eagle.dtd">
<eagle version="9.5.2">
<drawing>
<board>
<plain>
<wire x1="9.249221875" y1="23.114" x2="12.7" y2="23.114" width="0" layer="20"/>
<wire x1="12.7" y1="23.114" x2="13.716" y2="24.13" width="0" layer="20" curve="90"/>
<wire x1="9.249221875" y1="23.114" x2="8.382" y2="22.246778125" width="0" layer="20" curve="90"/>
<wire x1="8.382" y1="22.246778125" x2="8.382" y2="9.862409375" width="0" layer="20"/>
<wire x1="8.382" y1="9.862409375" x2="6.647590625" y2="8.128" width="0" layer="20" curve="-90"/>
<wire x1="6.647590625" y1="8.128" x2="0.867221875" y2="8.128" width="0" layer="20"/>
<wire x1="0.867221875" y1="8.128" x2="0" y2="7.260778125" width="0" layer="20" curve="90"/>
<wire x1="0" y1="7.260778125" x2="0" y2="5.947221875" width="0" layer="20"/>
<wire x1="0" y1="5.947221875" x2="0.867221875" y2="5.08" width="0" layer="20" curve="90"/>
<wire x1="0.867221875" y1="5.08" x2="6.647590625" y2="5.08" width="0" layer="20"/>
<wire x1="6.647590625" y1="5.08" x2="8.382" y2="3.345590625" width="0" layer="20" curve="-90"/>
<wire x1="8.382" y1="3.345590625" x2="8.382" y2="3.153221875" width="0" layer="20"/>
<wire x1="8.382" y1="3.153221875" x2="9.249221875" y2="2.286" width="0" layer="20" curve="90"/>
<wire x1="9.249221875" y1="2.286" x2="12.7" y2="2.286" width="0" layer="20"/>
<wire x1="12.7" y1="2.286" x2="13.716" y2="1.27" width="0" layer="20" curve="-90"/>
<wire x1="13.716" y1="1.27" x2="14.986" y2="0" width="0" layer="20" curve="90"/>
<wire x1="14.986" y1="0" x2="16.256" y2="1.27" width="0" layer="20" curve="90"/>
<wire x1="16.256" y1="1.27" x2="17.272" y2="2.286" width="0" layer="20" curve="-90"/>
<wire x1="17.272" y1="2.286" x2="20.722778125" y2="2.286" width="0" layer="20"/>
<wire x1="16.256" y1="24.13" x2="17.272" y2="23.114" width="0" layer="20" curve="90"/>
<wire x1="17.272" y1="23.114" x2="20.722778125" y2="23.114" width="0" layer="20"/>
<wire x1="20.722778125" y1="23.114" x2="21.59" y2="22.246778125" width="0" layer="20" curve="-90"/>
<wire x1="20.722778125" y1="2.286" x2="21.59" y2="3.153221875" width="0" layer="20" curve="90"/>
<wire x1="21.59" y1="3.153221875" x2="21.59" y2="22.246778125" width="0" layer="20"/>
<text>+</text>
<text>_</text>
<text>+</text>
<text>_</text>
<text>5/9/20</text>
<text>ANT</text>
<wire x1="13.716" y1="24.13" x2="14.986" y2="25.4" width="0" layer="20" curve="-90"/>
<wire x1="14.986" y1="25.4" x2="16.256" y2="24.13" width="0" layer="20" curve="-90"/>
</plain>
<libraries>
<library name="Protofusion">
<packages>
<package name="UFQFPN28">
</package>
<package name="POGOPROG-CONN-4-ALLSMT">
</package>
<package name="FEATHERHAB-ALPHA">
</package>
<package name="QFN20-4X4">
</package>
<package name="LED-0603">
<description>&lt;B&gt;LED 0603 SMT&lt;/B&gt;&lt;p&gt;
0603, surface mount.
&lt;p&gt;Specifications:
&lt;ul&gt;&lt;li&gt;Pin count: 2&lt;/li&gt;
&lt;li&gt;Pin pitch:0.075inch &lt;/li&gt;
&lt;li&gt;Area: 0.06" x 0.03"&lt;/li&gt;
&lt;/ul&gt;&lt;/p&gt;
&lt;p&gt;Example device(s):
&lt;ul&gt;&lt;li&gt;LED - BLUE&lt;/li&gt;</description>
</package>
<package name="AVA_JTI_ANTENNA-1575AT43A40">
</package>
<package name="QFN50P505X505X90-28">
<description>28-QFN, 0.5 mm pitch, 5.05 X 5.05 X 0.9 mm body
&lt;p&gt;28-pin QFN package with 0.5 mm pitch with body size 5.05 X 5.05 X 0.9 mm&lt;/p&gt;</description>
</package>
<package name="UBLOX_MAX-8">
<description>uBlox MAX-8</description>
</package>
<package name="ASTX-H11">
</package>
<package name="1,6/0,9">
<description>&lt;b&gt;THROUGH-HOLE PAD&lt;/b&gt;</description>
</package>
<package name="JST_ZH-V-2-1">
</package>
<package name="SOT-553">
</package>
</packages>
</library>
<library name="Protofusion-passives">
<packages>
<package name="0402-RES">
</package>
<package name="0402-INDUCTOR">
</package>
<package name="MAL219691204E3">
</package>
<package name="0603-CAP">
</package>
<package name="0402-CAP">
</package>
<package name="0603-INDUCTOR">
</package>
<package name="1008-INDUCTOR">
<description>1008 inductor footprint</description>
</package>
</packages>
</library>
</libraries>
<attributes>
</attributes>
<variantdefs>
</variantdefs>
<elements>
<element name="J2" library="Protofusion" package="POGOPROG-CONN-4-ALLSMT" value="POGOPIN-CONN-4">
<attribute name="DIGIKEY_PART_NUMBER" value=""/>
<attribute name="MANUFACTURER" value=""/>
<attribute name="PART_NUMBER" value=""/>
<attribute name="VALUE"/>
</element>
<element name="U$3" library="Protofusion" package="FEATHERHAB-ALPHA" value=""/>
<element name="PAD1" library="Protofusion" package="1,6/0,9" value="WIREPADTH">
<attribute name="VALUE"/>
</element>
<element name="L3" library="Protofusion-passives" package="0402-INDUCTOR" value="720nH">
<attribute name="DIGIKEY_PART_NUMBER" value=""/>
<attribute name="MANUFACTURER" value="Taiyo Yuden"/>
<attribute name="NAME"/>
<attribute name="PART_NUMBER" value="BRC1608TR72M6"/>
<attribute name="TOLERANCE" value=""/>
<attribute name="VALUE"/>
</element>
<element name="PAD2" library="Protofusion" package="1,6/0,9" value="WIREPADTH">
<attribute name="NAME"/>
<attribute name="VALUE"/>
</element>
<element name="C8" library="Protofusion-passives" package="MAL219691204E3" value="15F">
<attribute name="MANUFACTURER" value="Vishay BC Components"/>
<attribute name="PART_NUMBER" value="MAL219691203E3"/>
</element>
<element name="U2" library="Protofusion" package="UFQFPN28" value="STM32L031G6U6">
<attribute name="MANUFACTURER" value="STMicroelectronics"/>
<attribute name="PART_NUMBER" value="STM32L031G6U6"/>
</element>
<element name="C1" library="Protofusion-passives" package="0603-CAP" value="10uF">
<attribute name="DIGIKEY_PART_NUMBER" value=""/>
<attribute name="MANUFACTURER" value="Murata Electronics"/>
<attribute name="NAME"/>
<attribute name="PART_NUMBER" value="GRM188R61A106KE69J"/>
<attribute name="TOLERANCE" value=""/>
<attribute name="VALUE"/>
<attribute name="VOLTAGE" value="10V"/>
</element>
<element name="C2" library="Protofusion-passives" package="0603-CAP" value="22uF">
<attribute name="DIGIKEY_PART_NUMBER" value=""/>
<attribute name="MANUFACTURER" value="Samsung Electro-Mechanics"/>
<attribute name="NAME"/>
<attribute name="PART_NUMBER" value="CL10A226MPMNUBE"/>
<attribute name="TOLERANCE" value=""/>
<attribute name="VALUE"/>
<attribute name="VOLTAGE" value="10V"/>
</element>
<element name="C4" library="Protofusion-passives" package="0603-CAP" value="10uF">
<attribute name="DIGIKEY_PART_NUMBER" value=""/>
<attribute name="MANUFACTURER" value="Murata Electronics"/>
<attribute name="NAME"/>
<attribute name="PART_NUMBER" value="GRM188R61A106KE69J"/>
<attribute name="TOLERANCE" value=""/>
<attribute name="VALUE"/>
<attribute name="VOLTAGE" value="10V"/>
</element>
<element name="C3" library="Protofusion-passives" package="0402-CAP" value="0.1uF">
<attribute name="DIGIKEY_PART_NUMBER" value=""/>
<attribute name="MANUFACTURER" value="Murata Electronics"/>
<attribute name="NAME"/>
<attribute name="PART_NUMBER" value="GRM155R62A104KE14D"/>
<attribute name="TOLERANCE" value=""/>
<attribute name="VALUE"/>
<attribute name="VOLTAGE" value=""/>
</element>
<element name="C5" library="Protofusion-passives" package="0402-CAP" value="0.1uF">
<attribute name="DIGIKEY_PART_NUMBER" value=""/>
<attribute name="MANUFACTURER" value="Murata Electronics"/>
<attribute name="NAME"/>
<attribute name="PART_NUMBER" value="GRM155R62A104KE14D"/>
<attribute name="TOLERANCE" value=""/>
<attribute name="VALUE"/>
<attribute name="VOLTAGE" value=""/>
</element>
<element name="C6" library="Protofusion-passives" package="0402-CAP" value="0.1uF">
<attribute name="DIGIKEY_PART_NUMBER" value=""/>
<attribute name="MANUFACTURER" value="Murata Electronics"/>
<attribute name="NAME"/>
<attribute name="PART_NUMBER" value="GRM155R62A104KE14D"/>
<attribute name="TOLERANCE" value=""/>
<attribute name="VALUE"/>
<attribute name="VOLTAGE" value=""/>
</element>
<element name="C12" library="Protofusion-passives" package="0402-CAP" value="0.1uF">
<attribute name="DIGIKEY_PART_NUMBER" value=""/>
<attribute name="MANUFACTURER" value="Murata Electronics"/>
<attribute name="NAME"/>
<attribute name="PART_NUMBER" value="GRM155R62A104KE14D"/>
<attribute name="TOLERANCE" value=""/>
<attribute name="VALUE"/>
<attribute name="VOLTAGE" value=""/>
</element>
<element name="C11" library="Protofusion-passives" package="0402-CAP" value="423pF">
<attribute name="DIGIKEY_PART_NUMBER" value=""/>
<attribute name="MANUFACTURER" value="Taiyo Yuden"/>
<attribute name="NAME"/>
<attribute name="PART_NUMBER" value="UMK105CH431JVHF"/>
<attribute name="TOLERANCE" value=""/>
<attribute name="VALUE"/>
<attribute name="VOLTAGE" value=""/>
</element>
<element name="C13" library="Protofusion-passives" package="0402-CAP" value="423pF">
<attribute name="DIGIKEY_PART_NUMBER" value=""/>
<attribute name="MANUFACTURER" value="Taiyo Yuden"/>
<attribute name="NAME"/>
<attribute name="PART_NUMBER" value="UMK105CH431JVHF"/>
<attribute name="TOLERANCE" value=""/>
<attribute name="VALUE"/>
<attribute name="VOLTAGE" value=""/>
</element>
<element name="C14" library="Protofusion-passives" package="0402-CAP" value="0.1uF">
<attribute name="DIGIKEY_PART_NUMBER" value=""/>
<attribute name="MANUFACTURER" value="Murata Electronics"/>
<attribute name="NAME"/>
<attribute name="PART_NUMBER" value="GRM155R62A104KE14D"/>
<attribute name="TOLERANCE" value=""/>
<attribute name="VALUE"/>
<attribute name="VOLTAGE" value=""/>
</element>
<element name="C10" library="Protofusion-passives" package="0402-CAP" value="0.1uF">
<attribute name="DIGIKEY_PART_NUMBER" value=""/>
<attribute name="MANUFACTURER" value="Murata Electronics"/>
<attribute name="NAME"/>
<attribute name="PART_NUMBER" value="GRM155R62A104KE14D"/>
<attribute name="TOLERANCE" value=""/>
<attribute name="VALUE"/>
<attribute name="VOLTAGE" value=""/>
</element>
<element name="R1" library="Protofusion-passives" package="0402-RES" value="510">
<attribute name="DIGIKEY_PART_NUMBER" value=""/>
<attribute name="MANUFACTURER" value="Panasonic Electronic Components"/>
<attribute name="NAME"/>
<attribute name="PART_NUMBER" value="ERJ-2GEJ511X"/>
<attribute name="TOLERANCE" value=""/>
<attribute name="VALUE"/>
</element>
<element name="U4" library="Protofusion" package="QFN20-4X4" value="SI5351C">
<attribute name="DIGIKEY_PART_NUMBER" value=""/>
<attribute name="MANUFACTURER" value="Silicon Labs"/>
<attribute name="NAME"/>
<attribute name="PART_NUMBER" value="SI5351C-B-GMR"/>
<attribute name="VALUE"/>
</element>
<element name="R3" library="Protofusion-passives" package="0402-RES" value="10K">
<attribute name="DIGIKEY_PART_NUMBER" value=""/>
<attribute name="MANUFACTURER" value="Panasonic Electronic Components"/>
<attribute name="NAME"/>
<attribute name="PART_NUMBER" value="ERJ-2GEJ103X"/>
<attribute name="TOLERANCE" value=""/>
<attribute name="VALUE"/>
</element>
<element name="R2" library="Protofusion-passives" package="0402-RES" value="10K">
<attribute name="DIGIKEY_PART_NUMBER" value=""/>
<attribute name="MANUFACTURER" value="Panasonic Electronic Components"/>
<attribute name="NAME"/>
<attribute name="PART_NUMBER" value="ERJ-2GEJ103X"/>
<attribute name="TOLERANCE" value=""/>
<attribute name="VALUE"/>
</element>
<element name="D1" library="Protofusion" package="LED-0603" value="Green">
<attribute name="DIGIKEY_PART_NUMBER" value=""/>
<attribute name="MANUFACTURER" value="Wurth Elektronik"/>
<attribute name="NAME"/>
<attribute name="PART_NUMBER" value="150060VS75000"/>
<attribute name="VALUE"/>
</element>
<element name="L2" library="Protofusion-passives" package="0603-INDUCTOR" value="10uH">
<attribute name="DIGIKEY_PART_NUMBER" value=""/>
<attribute name="MANUFACTURER" value="TDK Corporation"/>
<attribute name="NAME"/>
<attribute name="PART_NUMBER" value="MLZ1608N100LT000"/>
<attribute name="TOLERANCE" value=""/>
<attribute name="VALUE"/>
</element>
<element name="RF1" library="Protofusion" package="AVA_JTI_ANTENNA-1575AT43A40" value="GPS_ANTENNA">
<attribute name="MANUFACTURER" value="Johanson Technology Inc."/>
<attribute name="PART_NUMBER" value="1575AT43A0040E"/>
</element>
<element name="U1" library="Protofusion" package="QFN50P505X505X90-28" value="AEM10941">
<attribute name="MANUFACTURER" value="e-peas"/>
<attribute name="NAME"/>
<attribute name="PART_NUMBER" value="AEM10941"/>
</element>
<element name="U3" library="Protofusion" package="UBLOX_MAX-8" value="UBLOX_MAX-8">
<attribute name="MANUFACTURER" value="U-Blox"/>
<attribute name="PART_NUMBER" value="MAX-M8Q-0-10"/>
</element>
<element name="U5" library="Protofusion" package="ASTX-H11" value="TCXOABRACON">
<attribute name="MANUFACTURER" value="Abracon"/>
<attribute name="PART_NUMBER" value="ASTX-H11-B-10.000MHZ-I25-T"/>
</element>
<element name="C9" library="Protofusion-passives" package="0402-CAP" value="0.1uF">
<attribute name="DIGIKEY_PART_NUMBER" value=""/>
<attribute name="MANUFACTURER" value="Murata Electronics"/>
<attribute name="NAME"/>
<attribute name="PART_NUMBER" value="GRM155R62A104KE14D"/>
<attribute name="TOLERANCE" value=""/>
<attribute name="VALUE"/>
<attribute name="VOLTAGE" value=""/>
</element>
<element name="C15" library="Protofusion-passives" package="0402-CAP" value="0.1uF">
<attribute name="DIGIKEY_PART_NUMBER" value=""/>
<attribute name="MANUFACTURER" value="Murata Electronics"/>
<attribute name="NAME"/>
<attribute name="PART_NUMBER" value="GRM155R62A104KE14D"/>
<attribute name="TOLERANCE" value=""/>
<attribute name="VALUE"/>
<attribute name="VOLTAGE" value=""/>
</element>
<element name="L1" library="Protofusion-passives" package="1008-INDUCTOR" value="10uH">
<attribute name="DIGIKEY_PART_NUMBER" value=""/>
<attribute name="MANUFACTURER" value="Delta Electronics/Cyntec"/>
<attribute name="NAME"/>
<attribute name="PART_NUMBER" value="HTEX25201B-100MSR"/>
<attribute name="TOLERANCE" value=""/>
<attribute name="VALUE"/>
</element>
<element name="J1" library="Protofusion" package="JST_ZH-V-2-1" value="CONN-2JST-ZH-2-VERT">
<attribute name="MANUFACTURER" value="JST Sales America Inc."/>
<attribute name="NAME"/>
<attribute name="PART_NUMBER" value="B2B-ZR(LF)(SN)"/>
<attribute name="VALUE"/>
</element>
<element name="U6" library="Protofusion" package="SOT-553" value="TCR2EE">
<attribute name="DIGIKEY_PART_NUMBER" value=""/>
<attribute name="MANUFACTURER" value="Toshiba Semiconductor and Storage"/>
<attribute name="PART_NUMBER" value="TCR2EE33,LM(CT"/>
</element>
<element name="C16" library="Protofusion-passives" package="0402-CAP" value="1uF">
<attribute name="DIGIKEY_PART_NUMBER" value=""/>
<attribute name="MANUFACTURER" value="Samsung Electro-Mechanics"/>
<attribute name="NAME"/>
<attribute name="PART_NUMBER" value="CL05A105KP5NNNC"/>
<attribute name="TOLERANCE" value=""/>
<attribute name="VALUE"/>
<attribute name="VOLTAGE" value=""/>
</element>
<element name="C17" library="Protofusion-passives" package="0402-CAP" value="1uF">
<attribute name="DIGIKEY_PART_NUMBER" value=""/>
<attribute name="MANUFACTURER" value="Samsung Electro-Mechanics"/>
<attribute name="NAME"/>
<attribute name="PART_NUMBER" value="CL05A105KP5NNNC"/>
<attribute name="TOLERANCE" value=""/>
<attribute name="VALUE"/>
<attribute name="VOLTAGE" value=""/>
</element>
</elements>
<signals>
<signal name="GND">
<contactref element="U2" pad="28"/>
<contactref element="U2" pad="16"/>
<contactref element="C6" pad="2"/>
<contactref element="C3" pad="2"/>
<contactref element="C5" pad="2"/>
<contactref element="J2" pad="2"/>
<contactref element="C12" pad="2"/>
<contactref element="C4" pad="2"/>
<contactref element="C2" pad="2"/>
<contactref element="C1" pad="2"/>
<contactref element="C8" pad="2"/>
<contactref element="U4" pad="P$21"/>
<contactref element="C10" pad="2"/>
<contactref element="C11" pad="2"/>
<contactref element="C13" pad="2"/>
<contactref element="PAD2" pad="1"/>
<contactref element="D1" pad="C"/>
<contactref element="U1" pad="18"/>
<contactref element="U1" pad="29"/>
<contactref element="U1" pad="7"/>
<contactref element="U1" pad="15"/>
<contactref element="U1" pad="17"/>
<contactref element="U1" pad="9"/>
<contactref element="U1" pad="10"/>
<contactref element="U3" pad="1_GND"/>
<contactref element="U3" pad="12_GND"/>
<contactref element="U3" pad="10_GND"/>
<contactref element="U3" pad="15_RESERVED"/>
<contactref element="U1" pad="5"/>
<contactref element="U5" pad="2"/>
<contactref element="C9" pad="2"/>
<contactref element="C15" pad="2"/>
<contactref element="J1" pad="2"/>
<contactref element="U2" pad="27"/>
<contactref element="U6" pad="2"/>
<contactref element="C16" pad="2"/>
<contactref element="C17" pad="2"/>
<contactref element="U1" pad="12"/>
</signal>
<signal name="SWCLK">
<contactref element="J2" pad="3"/>
<contactref element="U2" pad="22"/>
</signal>
<signal name="SWDIO">
<contactref element="J2" pad="4"/>
<contactref element="U2" pad="21"/>
</signal>
<signal name="N$2">
<contactref element="R1" pad="1"/>
<contactref element="D1" pad="A"/>
</signal>
<signal name="SCL">
<contactref element="U4" pad="P$4"/>
<contactref element="R3" pad="1"/>
<contactref element="U2" pad="19"/>
</signal>
<signal name="SDA">
<contactref element="U4" pad="P$5"/>
<contactref element="R2" pad="1"/>
<contactref element="U2" pad="20"/>
</signal>
<signal name="N$36">
<contactref element="L3" pad="1"/>
<contactref element="C11" pad="1"/>
<contactref element="U4" pad="P$13"/>
</signal>
<signal name="N$1">
<contactref element="L3" pad="2"/>
<contactref element="C13" pad="1"/>
<contactref element="C14" pad="1"/>
</signal>
<signal name="N$9">
<contactref element="PAD1" pad="1"/>
<contactref element="C14" pad="2"/>
</signal>
<signal name="BUFSRC">
<contactref element="C1" pad="1"/>
<contactref element="U1" pad="27"/>
<contactref element="L1" pad="1"/>
</signal>
<signal name="SWBOOST">
<contactref element="U1" pad="28"/>
<contactref element="L1" pad="2"/>
</signal>
<signal name="BOOST">
<contactref element="C2" pad="1"/>
<contactref element="U1" pad="1"/>
</signal>
<signal name="SWBUCK">
<contactref element="L2" pad="2"/>
<contactref element="U1" pad="2"/>
</signal>
<signal name="BUCK">
<contactref element="C4" pad="1"/>
<contactref element="L2" pad="1"/>
<contactref element="U1" pad="3"/>
<contactref element="U1" pad="8"/>
<contactref element="U1" pad="6"/>
<contactref element="U1" pad="4"/>
</signal>
<signal name="LED">
<contactref element="R1" pad="2"/>
<contactref element="U2" pad="23"/>
</signal>
<signal name="OSC_EN">
<contactref element="U4" pad="P$7"/>
<contactref element="U5" pad="1"/>
<contactref element="U2" pad="18"/>
</signal>
<signal name="GPS-RX">
<contactref element="U3" pad="3_RXD1"/>
<contactref element="U2" pad="25"/>
</signal>
<signal name="GPS-TX">
<contactref element="U3" pad="2_TXD1"/>
<contactref element="U2" pad="26"/>
</signal>
<signal name="N$7">
<contactref element="RF1" pad="FEED"/>
<contactref element="U3" pad="11_RF_IN"/>
</signal>
<signal name="STATUS1">
<contactref element="U1" pad="20"/>
<contactref element="U2" pad="14"/>
</signal>
<signal name="EXTINT">
<contactref element="U3" pad="5_EXTINT0"/>
<contactref element="U2" pad="24"/>
</signal>
<signal name="CLOCK">
<contactref element="U5" pad="3"/>
<contactref element="U4" pad="P$6"/>
</signal>
<signal name="SOLAR+">
<contactref element="J1" pad="1"/>
<contactref element="U1" pad="25"/>
<contactref element="U1" pad="26"/>
</signal>
<signal name="TIMEPULSE">
<contactref element="U3" pad="4_TIMEPULSE"/>
<contactref element="U2" pad="15"/>
</signal>
<signal name="3.3V">
<contactref element="C12" pad="1"/>
<contactref element="U3" pad="7_VCC_IO"/>
<contactref element="U3" pad="8_VCC"/>
<contactref element="U6" pad="4"/>
<contactref element="C16" pad="1"/>
<contactref element="U5" pad="4"/>
<contactref element="C15" pad="1"/>
<contactref element="J2" pad="1"/>
<contactref element="U4" pad="P$20"/>
<contactref element="C10" pad="1"/>
<contactref element="R3" pad="2"/>
<contactref element="R2" pad="2"/>
<contactref element="U4" pad="P$11"/>
<contactref element="U4" pad="P$10"/>
<contactref element="U4" pad="P$18"/>
<contactref element="U4" pad="P$14"/>
<contactref element="C9" pad="1"/>
<contactref element="U2" pad="1"/>
<contactref element="U2" pad="17"/>
<contactref element="U2" pad="5"/>
<contactref element="C3" pad="1"/>
<contactref element="C5" pad="1"/>
<contactref element="C6" pad="1"/>
<contactref element="U3" pad="6_V_BCKP"/>
</signal>
<signal name="V_BATT">
<contactref element="C8" pad="1"/>
<contactref element="U1" pad="16"/>
<contactref element="U6" pad="3"/>
<contactref element="C17" pad="1"/>
</signal>
<signal name="3_3_EN">
<contactref element="U6" pad="1"/>
<contactref element="U1" pad="21"/>
</signal>
</signals>
</board>
</drawing>
</eagle>
