<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE eagle SYSTEM "eagle.dtd">
<eagle version="8.5.2">
<drawing>
<board>
<plain>
<wire x1="0" y1="0" x2="0" y2="35.56" width="0.2032" layer="20" locked="yes"/>
<wire x1="0" y1="35.56" x2="17.78" y2="35.56" width="0.2032" layer="20" locked="yes"/>
<wire x1="17.78" y1="35.56" x2="17.78" y2="0" width="0.2032" layer="20" locked="yes"/>
<wire x1="17.78" y1="0" x2="0" y2="0" width="0.2032" layer="20" locked="yes"/>
<text>10</text>
<text>11</text>
<text>12</text>
<text>13</text>
<text>A0</text>
<text>A1</text>
<text>A2</text>
<text>A3</text>
<text>VCC</text>
<text>GND</text>
<text>VIN</text>
<text>1/TX</text>
<text>0/RX</text>
<text>GND</text>
<text>2</text>
<text>3</text>
<text>4</text>
<text>5</text>
<text>6</text>
<text>7</text>
<text>8</text>
<text>9</text>
<text>Jim Lindblom</text>
<text>v0.1</text>
<text>This is a 4-layer board!</text>
<text>Units in inches</text>
<text>A4</text>
<text>A5</text>
<text>A6</text>
<text>A7</text>
<text>SCL</text>
<text>SDA</text>
</plain>
<libraries>
<library name="SparkFun-Aesthetics">
<description>&lt;h3&gt;SparkFun Electronics' preferred foot prints&lt;/h3&gt;
In this library you'll find non-functional items- supply symbols, logos, notations, frame blocks, etc.&lt;br&gt;&lt;br&gt;
We've spent an enormous amount of time creating and checking these footprints and parts, but it is the end user's responsibility to ensure correctness and suitablity for a given componet or application. If you enjoy using this library, please buy one of our products at www.sparkfun.com.
&lt;br&gt;&lt;br&gt;
&lt;b&gt;Licensing:&lt;/b&gt; Creative Commons ShareAlike 4.0 International - https://creativecommons.org/licenses/by-sa/4.0/ 
&lt;br&gt;&lt;br&gt;
You are welcome to use this library for commercial purposes. For attribution, we ask that when you begin to sell your device using our footprint, you email us with a link to the product being sold. We want bragging rights that we helped (in a very small part) to create your 8th world wonder. We would like the opportunity to feature your device on our homepage.</description>
<packages>
<package name="CREATIVE_COMMONS">
</package>
<package name="FIDUCIAL-1X2">
</package>
</packages>
</library>
<library name="Tonic Systems">
<packages>
<package name="0603">
</package>
<package name="0402-CAP">
<description>&lt;b&gt;CAPACITOR&lt;/b&gt;&lt;p&gt;
chip</description>
</package>
<package name="0402-RES">
<description>&lt;b&gt;CAPACITOR&lt;/b&gt;&lt;p&gt;
chip</description>
</package>
<package name="0402">
<description>&lt;b&gt;EMIFIL (R) Chip Ferrite Bead for GHz Noise&lt;/b&gt;&lt;p&gt;
Source: http://www.murata.com/ Ferrite Bead BLM15H.pdf</description>
</package>
<package name="CRYSTAL-SMD-3.2X1.5MM">
<description>&lt;h3&gt;3.2 x 1.5mm Crystal Package&lt;/h3&gt;
&lt;p&gt;e.g: &lt;a href="http://www.sii.co.jp/en/quartz/files/2013/03/file_PRODUCT_MASTER_50812_GRAPHIC03.pdf"&gt;SX-32S&lt;/a&gt;&lt;/p&gt;</description>
</package>
<package name="QFN-48">
<description>&lt;h3&gt;48-pin QFN (7x7mm, 0.5mm pitch)&lt;/h3&gt;
&lt;p&gt;Used on:
&lt;ul&gt;&lt;li&gt;ATSAMD21G&lt;/il&gt;&lt;/ul&gt;
&lt;/p&gt;</description>
</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="TACTILE_SWITCH_SMD_4.6X2.8MM">
<description>&lt;h3&gt;Momentary Switch (Pushbutton) - SPST - SMD, 4.6 x 2.8mm&lt;/h3&gt;
&lt;p&gt;Normally-open (NO) SPST momentary switches (buttons, pushbuttons).&lt;/p&gt;
&lt;p&gt;&lt;a href="http://www.ck-components.com/media/1479/kmr2.pdf"&gt;Datasheet&lt;/a&gt;&lt;/p&gt;</description>
</package>
<package name="QFN-28">
</package>
<package name="TC2030-IDC-NL">
</package>
<package name="USB-MICROB">
<description>Micro USB Package</description>
</package>
<package name="USB-MICROB-VERTICAL">
</package>
<package name="SOT23-5">
<description>&lt;b&gt;Small Outline Transistor&lt;/b&gt;</description>
</package>
<package name="1X14_NO_SILK">
<description>&lt;h3&gt;Plated Through Hole -14 Pin No Silk outline&lt;/h3&gt;
&lt;p&gt;Specifications:
&lt;ul&gt;&lt;li&gt;Pin count:14&lt;/li&gt;
&lt;li&gt;Pin pitch:0.1"&lt;/li&gt;
&lt;/ul&gt;&lt;/p&gt;
&lt;p&gt;Example device(s):
&lt;ul&gt;&lt;li&gt;CONN_14&lt;/li&gt;
&lt;/ul&gt;&lt;/p&gt;</description>
</package>
</packages>
</library>
</libraries>
<attributes>
</attributes>
<variantdefs>
</variantdefs>
<elements>
<element name="JP1" library="Tonic Systems" package="1X14_NO_SILK" value=""/>
<element name="JP2" library="Tonic Systems" package="1X14_NO_SILK" value=""/>
<element name="Y1" library="Tonic Systems" package="CRYSTAL-SMD-3.2X1.5MM" value="32kHz">
<attribute name="PROD_ID" value="XTAL-13062"/>
</element>
<element name="U1" library="Tonic Systems" package="QFN-48" value="ATSAMD21G-M"/>
<element name="C1" library="Tonic Systems" package="0402-CAP" value="0.1uF"/>
<element name="C2" library="Tonic Systems" package="0402-CAP" value="1.0uF"/>
<element name="C3" library="Tonic Systems" package="0402-CAP" value="0.1uF"/>
<element name="C4" library="Tonic Systems" package="0402-CAP" value="0.1uF"/>
<element name="R1" library="Tonic Systems" package="0402-RES" value="10K"/>
<element name="L1" library="Tonic Systems" package="0402" value="FB -60Ohm">
<attribute name="MFG_ID" value="MPZ1608S600A"/>
<attribute name="PROD_ID" value="RES-07859"/>
</element>
<element name="C5" library="Tonic Systems" package="0402-CAP" value="15pF"/>
<element name="C6" library="Tonic Systems" package="0402-CAP" value="15pF"/>
<element name="R3" library="Tonic Systems" package="0402-RES" value="1k"/>
<element name="D3" library="Tonic Systems" package="LED-0603" value="BLUE"/>
<element name="JP5" library="Tonic Systems" package="TC2030-IDC-NL" value="JTAG-SWD"/>
<element name="F1" library="Tonic Systems" package="0603" value="PTC0603"/>
<element name="JP3" library="Tonic Systems" package="USB-MICROB" value="USB-MICROB"/>
<element name="FRAME1" library="SparkFun-Aesthetics" package="CREATIVE_COMMONS" value="FRAME-LETTER"/>
<element name="S1" library="Tonic Systems" package="TACTILE_SWITCH_SMD_4.6X2.8MM" value="RESET">
<attribute name="PROD_ID" value="SWCH-13065"/>
</element>
<element name="FID1" library="SparkFun-Aesthetics" package="FIDUCIAL-1X2" value="FIDUCIAL1X2"/>
<element name="FID2" library="SparkFun-Aesthetics" package="FIDUCIAL-1X2" value="FIDUCIAL1X2"/>
<element name="U$3" library="Tonic Systems" package="QFN-28" value="MCP25625"/>
<element name="C9" library="Tonic Systems" package="0402-CAP" value="0.1uF"/>
<element name="C10" library="Tonic Systems" package="0402-CAP" value="0.1uF"/>
<element name="C11" library="Tonic Systems" package="0402-CAP" value="0.1uF"/>
<element name="Y2" library="Tonic Systems" package="CRYSTAL-SMD-3.2X1.5MM" value="8MHz">
<attribute name="PROD_ID" value="XTAL-13062"/>
</element>
<element name="C12" library="Tonic Systems" package="0402-CAP" value="22pF"/>
<element name="C13" library="Tonic Systems" package="0402-CAP" value="22pF"/>
<element name="U$6" library="Tonic Systems" package="USB-MICROB-VERTICAL" value="USB-5PIN"/>
<element name="U$7" library="Tonic Systems" package="USB-MICROB-VERTICAL" value="USB-5PIN"/>
<element name="C14" library="Tonic Systems" package="0402-CAP" value="0.1uF"/>
<element name="U2" library="Tonic Systems" package="SOT23-5" value="3.3V">
<attribute name="PROD_ID" value="VREG-12457"/>
</element>
<element name="C7" library="Tonic Systems" package="0402-CAP" value="1.0uF"/>
<element name="C8" library="Tonic Systems" package="0402-CAP" value="1.0uF"/>
</elements>
<signals>
<signal name="GND">
<contactref element="U1" pad="42"/>
<contactref element="U1" pad="35"/>
<contactref element="U1" pad="18"/>
<contactref element="U1" pad="5"/>
<contactref element="C1" pad="2"/>
<contactref element="C2" pad="2"/>
<contactref element="C6" pad="2"/>
<contactref element="C5" pad="1"/>
<contactref element="C4" pad="2"/>
<contactref element="JP2" pad="2"/>
<contactref element="S1" pad="1"/>
<contactref element="C3" pad="2"/>
<contactref element="U$3" pad="P$18"/>
<contactref element="U$3" pad="P$22"/>
<contactref element="U$3" pad="PAD"/>
<contactref element="C12" pad="1"/>
<contactref element="C13" pad="1"/>
<contactref element="C9" pad="2"/>
<contactref element="C10" pad="2"/>
<contactref element="C11" pad="2"/>
<contactref element="JP5" pad="P$5"/>
<contactref element="JP3" pad="GND"/>
<contactref element="U$6" pad="P$5"/>
<contactref element="U$6" pad="P$4"/>
<contactref element="U$6" pad="P$1"/>
<contactref element="U$6" pad="P$6"/>
<contactref element="U$6" pad="GND"/>
<contactref element="U$6" pad="P$2"/>
<contactref element="U$6" pad="P$3"/>
<contactref element="U$7" pad="P$5"/>
<contactref element="U$7" pad="P$4"/>
<contactref element="U$7" pad="P$1"/>
<contactref element="U$7" pad="P$6"/>
<contactref element="U$7" pad="GND"/>
<contactref element="U$7" pad="P$2"/>
<contactref element="U$7" pad="P$3"/>
<contactref element="C14" pad="2"/>
<contactref element="C7" pad="2"/>
<contactref element="U2" pad="2"/>
<contactref element="U2" pad="4"/>
<contactref element="C8" pad="2"/>
<contactref element="S1" pad="2"/>
<contactref element="JP1" pad="1"/>
<contactref element="JP3" pad="MT1"/>
<contactref element="JP3" pad="MT2"/>
<contactref element="JP3" pad="MT3"/>
<contactref element="JP3" pad="MT4"/>
<contactref element="JP3" pad="MT5"/>
<contactref element="JP3" pad="MT6"/>
<contactref element="U1" pad="EP"/>
</signal>
<signal name="3.3V">
<contactref element="R1" pad="2"/>
<contactref element="U1" pad="44"/>
<contactref element="C1" pad="1"/>
<contactref element="C4" pad="1"/>
<contactref element="R3" pad="2"/>
<contactref element="L1" pad="2"/>
<contactref element="U$3" pad="P$11"/>
<contactref element="U$3" pad="P$3"/>
<contactref element="C9" pad="1"/>
<contactref element="C10" pad="1"/>
<contactref element="JP5" pad="P$1"/>
<contactref element="U1" pad="36"/>
<contactref element="C14" pad="1"/>
<contactref element="U2" pad="5"/>
<contactref element="C8" pad="1"/>
<contactref element="JP2" pad="3"/>
<contactref element="U1" pad="17"/>
</signal>
<signal name="VDDCORE">
<contactref element="C2" pad="1"/>
<contactref element="U1" pad="43"/>
</signal>
<signal name="VDDANA">
<contactref element="U1" pad="6"/>
<contactref element="C3" pad="1"/>
<contactref element="L1" pad="1"/>
</signal>
<signal name="N$2">
<contactref element="U1" pad="1"/>
<contactref element="Y1" pad="P$2"/>
<contactref element="C5" pad="2"/>
</signal>
<signal name="N$4">
<contactref element="C6" pad="1"/>
<contactref element="Y1" pad="P$1"/>
<contactref element="U1" pad="2"/>
</signal>
<signal name="!RESET">
<contactref element="U1" pad="40"/>
<contactref element="R1" pad="1"/>
<contactref element="S1" pad="3"/>
<contactref element="U$3" pad="P$2"/>
<contactref element="JP5" pad="P$3"/>
<contactref element="S1" pad="4"/>
</signal>
<signal name="D1/TXO">
<contactref element="U1" pad="15"/>
<contactref element="JP1" pad="3"/>
</signal>
<signal name="D0/RXI">
<contactref element="U1" pad="16"/>
<contactref element="JP1" pad="2"/>
</signal>
<signal name="D4">
<contactref element="U1" pad="13"/>
<contactref element="JP1" pad="6"/>
</signal>
<signal name="D3">
<contactref element="U1" pad="14"/>
<contactref element="JP1" pad="5"/>
</signal>
<signal name="D2">
<contactref element="U1" pad="23"/>
<contactref element="JP1" pad="4"/>
</signal>
<signal name="D5">
<contactref element="U1" pad="24"/>
<contactref element="JP1" pad="7"/>
</signal>
<signal name="D6">
<contactref element="U1" pad="29"/>
<contactref element="JP1" pad="8"/>
</signal>
<signal name="D7">
<contactref element="U1" pad="30"/>
<contactref element="JP1" pad="9"/>
</signal>
<signal name="D8">
<contactref element="JP1" pad="10"/>
<contactref element="U1" pad="19"/>
</signal>
<signal name="D9">
<contactref element="JP1" pad="11"/>
<contactref element="U1" pad="20"/>
</signal>
<signal name="A3">
<contactref element="U1" pad="9"/>
<contactref element="JP2" pad="10"/>
</signal>
<signal name="A2">
<contactref element="U1" pad="8"/>
<contactref element="JP2" pad="11"/>
</signal>
<signal name="A1">
<contactref element="U1" pad="7"/>
<contactref element="JP2" pad="12"/>
</signal>
<signal name="A0">
<contactref element="U1" pad="3"/>
<contactref element="JP2" pad="13"/>
</signal>
<signal name="D13/SCK">
<contactref element="U1" pad="26"/>
<contactref element="U$3" pad="P$26"/>
<contactref element="JP2" pad="14"/>
</signal>
<signal name="D12/MISO">
<contactref element="U1" pad="28"/>
<contactref element="U$3" pad="P$28"/>
<contactref element="JP1" pad="14"/>
</signal>
<signal name="D10/SS">
<contactref element="U1" pad="27"/>
<contactref element="U$3" pad="P$1"/>
<contactref element="JP1" pad="12"/>
</signal>
<signal name="N$6">
<contactref element="R3" pad="1"/>
<contactref element="D3" pad="A"/>
</signal>
<signal name="D11/MOSI">
<contactref element="U1" pad="25"/>
<contactref element="U$3" pad="P$27"/>
<contactref element="JP1" pad="13"/>
</signal>
<signal name="SWCLK">
<contactref element="U1" pad="45"/>
<contactref element="JP5" pad="P$4"/>
</signal>
<signal name="SWDIO">
<contactref element="U1" pad="46"/>
<contactref element="JP5" pad="P$2"/>
</signal>
<signal name="SDA">
<contactref element="U1" pad="31"/>
<contactref element="JP2" pad="5"/>
</signal>
<signal name="SCL">
<contactref element="U1" pad="32"/>
<contactref element="JP2" pad="4"/>
</signal>
<signal name="AREF">
<contactref element="U1" pad="4"/>
</signal>
<signal name="V_USB">
<contactref element="U$3" pad="P$19"/>
<contactref element="C11" pad="1"/>
</signal>
<signal name="N$3">
<contactref element="U1" pad="48"/>
<contactref element="D3" pad="C"/>
</signal>
<signal name="N$5">
<contactref element="U$3" pad="P$16"/>
<contactref element="U$3" pad="P$4"/>
</signal>
<signal name="N$7">
<contactref element="U$3" pad="P$5"/>
<contactref element="U$3" pad="P$10"/>
</signal>
<signal name="N$18">
<contactref element="U$3" pad="P$21"/>
<contactref element="Y2" pad="P$2"/>
<contactref element="C12" pad="2"/>
</signal>
<signal name="N$19">
<contactref element="U$3" pad="P$20"/>
<contactref element="Y2" pad="P$1"/>
<contactref element="C13" pad="2"/>
</signal>
<signal name="CAN_INT">
<contactref element="U1" pad="39"/>
<contactref element="U$3" pad="P$25"/>
</signal>
<signal name="CAN_STBY">
<contactref element="U1" pad="41"/>
<contactref element="U$3" pad="P$15"/>
</signal>
<signal name="N$1">
<contactref element="JP3" pad="VBUS"/>
<contactref element="F1" pad="1"/>
</signal>
<signal name="N$8">
<contactref element="U$6" pad="VBUS"/>
<contactref element="U$7" pad="VBUS"/>
</signal>
<signal name="N$11">
<contactref element="U$6" pad="ID"/>
<contactref element="U$7" pad="ID"/>
</signal>
<signal name="CANB_N">
<contactref element="U$3" pad="P$12"/>
<contactref element="U$6" pad="D+"/>
<contactref element="U$7" pad="D+"/>
</signal>
<signal name="V_IN">
<contactref element="F1" pad="2"/>
<contactref element="U2" pad="1"/>
<contactref element="C7" pad="1"/>
<contactref element="U2" pad="3"/>
<contactref element="JP2" pad="1"/>
</signal>
<signal name="A4">
<contactref element="JP2" pad="9"/>
<contactref element="U1" pad="10"/>
</signal>
<signal name="A5">
<contactref element="JP2" pad="8"/>
<contactref element="U1" pad="47"/>
</signal>
<signal name="A6">
<contactref element="JP2" pad="7"/>
<contactref element="U1" pad="11"/>
</signal>
<signal name="A7">
<contactref element="JP2" pad="6"/>
<contactref element="U1" pad="12"/>
</signal>
<signal name="USB_D_P">
<contactref element="JP3" pad="D+"/>
<contactref element="U1" pad="34"/>
</signal>
<signal name="USB_D_N">
<contactref element="JP3" pad="D-"/>
<contactref element="U1" pad="33"/>
</signal>
<signal name="CANB_P">
<contactref element="U$7" pad="D-"/>
<contactref element="U$6" pad="D-"/>
<contactref element="U$3" pad="P$13"/>
</signal>
</signals>
</board>
</drawing>
</eagle>
