<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE eagle SYSTEM "eagle.dtd">
<eagle version="9.3.1">
<drawing>
<schematic>
<libraries>
<library name="SparkFun-IC-Microcontroller">
<description>&lt;h3&gt;SparkFun Microcontrollers&lt;/h3&gt;
This library contains microcontrollers.
&lt;br&gt;
&lt;br&gt;
We've spent an enormous amount of time creating and checking these footprints and parts, but it is &lt;b&gt; the end user's responsibility&lt;/b&gt; to ensure correctness and suitablity for a given componet or application. 
&lt;br&gt;
&lt;br&gt;If you enjoy using this library, please buy one of our products at &lt;a href=" www.sparkfun.com"&gt;SparkFun.com&lt;/a&gt;.
&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="QFN-44">
</package>
<package name="QFN-44-NOPAD">
</package>
<package name="QFN-44-NOPAD_1:1">
</package>
<package name="QFN-44-NOPAD_1:1-LESS_PASTE">
</package>
<package name="TQFP44">
</package>
</packages>
<symbols>
<symbol name="ATMEGA32U4">
<pin name="!RESET"/>
<pin name="AREF"/>
<pin name="AVCC@24"/>
<pin name="AVCC@44"/>
<pin name="D+"/>
<pin name="D-"/>
<pin name="GND@15"/>
<pin name="GND@23"/>
<pin name="GND@35"/>
<pin name="GND@43"/>
<pin name="PB0(SS)"/>
<pin name="PB1(SCK)"/>
<pin name="PB2(MOSI)"/>
<pin name="PB3(MISO)"/>
<pin name="PB4(ADC11)"/>
<pin name="PB5(ADC12)"/>
<pin name="PB6(ADC13)"/>
<pin name="PB7"/>
<pin name="PC6"/>
<pin name="PC7"/>
<pin name="PD0(SCL)"/>
<pin name="PD1(SDA)"/>
<pin name="PD2(RX)"/>
<pin name="PD3(TX)"/>
<pin name="PD4(ADC8)"/>
<pin name="PD5"/>
<pin name="PD6(ADC9)"/>
<pin name="PD7(ADC10)"/>
<pin name="PE2/!HWB"/>
<pin name="PE6"/>
<pin name="PF0(ADC0)"/>
<pin name="PF1(ADC1)"/>
<pin name="PF4(ADC4)"/>
<pin name="PF5(ADC5)"/>
<pin name="PF6(ADC6)"/>
<pin name="PF7(ADC7)"/>
<pin name="UCAP"/>
<pin name="UGND"/>
<pin name="UVCC"/>
<pin name="VBUS"/>
<pin name="VCC@14"/>
<pin name="VCC@34"/>
<pin name="XTAL1"/>
<pin name="XTAL2"/>
</symbol>
</symbols>
<devicesets>
<deviceset name="ATMEGA32U4">
<description>&lt;h3&gt;Atmel MCU, 32KByte&lt;/h3&gt;
&lt;p&gt;Atmel 44-pin 8-bit Microcontroller with 32KBytes of ISP Flash and USB Controller&lt;/p&gt;
&lt;p&gt;&lt;a href="http://cdn.sparkfun.com/datasheets/Dev/Arduino/Boards/ATMega32U4.pdf"&gt;Datasheet&lt;/a&gt;&lt;/p&gt;
&lt;h4&gt;SparkFun Products&lt;/h4&gt;
&lt;ul&gt;
&lt;li&gt;&lt;a href="https://www.sparkfun.com/products/12049"&gt;LilyPad Arduino USB - ATmega32U4 Board&lt;/a&gt; (DEV-12049)&lt;/li&gt;
&lt;li&gt;&lt;a href="https://www.sparkfun.com/products/12640"&gt;Pro Micro - 5V/16MHz&lt;/a&gt; (DEV-12640)&lt;/li&gt;
&lt;li&gt;&lt;a href="https://www.sparkfun.com/products/12587"&gt;Pro Micro - 3.3V/8MHz&lt;/a&gt; (DEV-12587)&lt;/li&gt;
&lt;li&gt;&lt;a href="https://www.sparkfun.com/products/11520"&gt;Fio v3 - ATmega32U4&lt;/a&gt; (DEV-11520)&lt;/li&gt;
&lt;li&gt;&lt;a href="https://www.sparkfun.com/products/13614"&gt;Qduino Mini&lt;/a&gt; (DEV-13614)&lt;/li&gt;
&lt;li&gt;&lt;a href="https://www.sparkfun.com/products/11511"&gt;Makey Makey - Standard Kit&lt;/a&gt; (WIG-11511)&lt;/li&gt;
&lt;li&gt;&lt;a href="https://www.sparkfun.com/products/11519"&gt;Makey Makey Deluxe Kit&lt;/a&gt; (WIG-11519)&lt;/li&gt;
&lt;/ul&gt;</description>
<gates>
<gate name="G$1" symbol="ATMEGA32U4"/>
</gates>
<devices>
<device name="QFN" package="QFN-44">
<connects>
<connect gate="G$1" pin="!RESET" pad="13"/>
<connect gate="G$1" pin="AREF" pad="42"/>
<connect gate="G$1" pin="AVCC@24" pad="24"/>
<connect gate="G$1" pin="AVCC@44" pad="44"/>
<connect gate="G$1" pin="D+" pad="4"/>
<connect gate="G$1" pin="D-" pad="3"/>
<connect gate="G$1" pin="GND@15" pad="15"/>
<connect gate="G$1" pin="GND@23" pad="23"/>
<connect gate="G$1" pin="GND@35" pad="35"/>
<connect gate="G$1" pin="GND@43" pad="43"/>
<connect gate="G$1" pin="PB0(SS)" pad="8"/>
<connect gate="G$1" pin="PB1(SCK)" pad="9"/>
<connect gate="G$1" pin="PB2(MOSI)" pad="10"/>
<connect gate="G$1" pin="PB3(MISO)" pad="11"/>
<connect gate="G$1" pin="PB4(ADC11)" pad="28"/>
<connect gate="G$1" pin="PB5(ADC12)" pad="29"/>
<connect gate="G$1" pin="PB6(ADC13)" pad="30"/>
<connect gate="G$1" pin="PB7" pad="12"/>
<connect gate="G$1" pin="PC6" pad="31"/>
<connect gate="G$1" pin="PC7" pad="32"/>
<connect gate="G$1" pin="PD0(SCL)" pad="18"/>
<connect gate="G$1" pin="PD1(SDA)" pad="19"/>
<connect gate="G$1" pin="PD2(RX)" pad="20"/>
<connect gate="G$1" pin="PD3(TX)" pad="21"/>
<connect gate="G$1" pin="PD4(ADC8)" pad="25"/>
<connect gate="G$1" pin="PD5" pad="22"/>
<connect gate="G$1" pin="PD6(ADC9)" pad="26"/>
<connect gate="G$1" pin="PD7(ADC10)" pad="27"/>
<connect gate="G$1" pin="PE2/!HWB" pad="33"/>
<connect gate="G$1" pin="PE6" pad="1"/>
<connect gate="G$1" pin="PF0(ADC0)" pad="41"/>
<connect gate="G$1" pin="PF1(ADC1)" pad="40"/>
<connect gate="G$1" pin="PF4(ADC4)" pad="39"/>
<connect gate="G$1" pin="PF5(ADC5)" pad="38"/>
<connect gate="G$1" pin="PF6(ADC6)" pad="37"/>
<connect gate="G$1" pin="PF7(ADC7)" pad="36"/>
<connect gate="G$1" pin="UCAP" pad="6"/>
<connect gate="G$1" pin="UGND" pad="5"/>
<connect gate="G$1" pin="UVCC" pad="2"/>
<connect gate="G$1" pin="VBUS" pad="7"/>
<connect gate="G$1" pin="VCC@14" pad="14"/>
<connect gate="G$1" pin="VCC@34" pad="34"/>
<connect gate="G$1" pin="XTAL1" pad="17"/>
<connect gate="G$1" pin="XTAL2" pad="16"/>
</connects>
<technologies>
<technology name="">
<attribute name="PROD_ID" value="IC-10828"/>
<attribute name="VALUE" value="32U4"/>
</technology>
</technologies>
</device>
<device name="QFN2" package="QFN-44-NOPAD">
<connects>
<connect gate="G$1" pin="!RESET" pad="13"/>
<connect gate="G$1" pin="AREF" pad="42"/>
<connect gate="G$1" pin="AVCC@24" pad="24"/>
<connect gate="G$1" pin="AVCC@44" pad="44"/>
<connect gate="G$1" pin="D+" pad="4"/>
<connect gate="G$1" pin="D-" pad="3"/>
<connect gate="G$1" pin="GND@15" pad="15"/>
<connect gate="G$1" pin="GND@23" pad="23"/>
<connect gate="G$1" pin="GND@35" pad="35"/>
<connect gate="G$1" pin="GND@43" pad="43"/>
<connect gate="G$1" pin="PB0(SS)" pad="8"/>
<connect gate="G$1" pin="PB1(SCK)" pad="9"/>
<connect gate="G$1" pin="PB2(MOSI)" pad="10"/>
<connect gate="G$1" pin="PB3(MISO)" pad="11"/>
<connect gate="G$1" pin="PB4(ADC11)" pad="28"/>
<connect gate="G$1" pin="PB5(ADC12)" pad="29"/>
<connect gate="G$1" pin="PB6(ADC13)" pad="30"/>
<connect gate="G$1" pin="PB7" pad="12"/>
<connect gate="G$1" pin="PC6" pad="31"/>
<connect gate="G$1" pin="PC7" pad="32"/>
<connect gate="G$1" pin="PD0(SCL)" pad="18"/>
<connect gate="G$1" pin="PD1(SDA)" pad="19"/>
<connect gate="G$1" pin="PD2(RX)" pad="20"/>
<connect gate="G$1" pin="PD3(TX)" pad="21"/>
<connect gate="G$1" pin="PD4(ADC8)" pad="25"/>
<connect gate="G$1" pin="PD5" pad="22"/>
<connect gate="G$1" pin="PD6(ADC9)" pad="26"/>
<connect gate="G$1" pin="PD7(ADC10)" pad="27"/>
<connect gate="G$1" pin="PE2/!HWB" pad="33"/>
<connect gate="G$1" pin="PE6" pad="1"/>
<connect gate="G$1" pin="PF0(ADC0)" pad="41"/>
<connect gate="G$1" pin="PF1(ADC1)" pad="40"/>
<connect gate="G$1" pin="PF4(ADC4)" pad="39"/>
<connect gate="G$1" pin="PF5(ADC5)" pad="38"/>
<connect gate="G$1" pin="PF6(ADC6)" pad="37"/>
<connect gate="G$1" pin="PF7(ADC7)" pad="36"/>
<connect gate="G$1" pin="UCAP" pad="6"/>
<connect gate="G$1" pin="UGND" pad="5"/>
<connect gate="G$1" pin="UVCC" pad="2"/>
<connect gate="G$1" pin="VBUS" pad="7"/>
<connect gate="G$1" pin="VCC@14" pad="14"/>
<connect gate="G$1" pin="VCC@34" pad="34"/>
<connect gate="G$1" pin="XTAL1" pad="17"/>
<connect gate="G$1" pin="XTAL2" pad="16"/>
</connects>
<technologies>
<technology name="">
<attribute name="PROD_ID" value="IC-10828"/>
<attribute name="VALUE" value="32U4"/>
</technology>
</technologies>
</device>
<device name="1:1" package="QFN-44-NOPAD_1:1">
<connects>
<connect gate="G$1" pin="!RESET" pad="13"/>
<connect gate="G$1" pin="AREF" pad="42"/>
<connect gate="G$1" pin="AVCC@24" pad="24"/>
<connect gate="G$1" pin="AVCC@44" pad="44"/>
<connect gate="G$1" pin="D+" pad="4"/>
<connect gate="G$1" pin="D-" pad="3"/>
<connect gate="G$1" pin="GND@15" pad="15"/>
<connect gate="G$1" pin="GND@23" pad="23"/>
<connect gate="G$1" pin="GND@35" pad="35"/>
<connect gate="G$1" pin="GND@43" pad="43"/>
<connect gate="G$1" pin="PB0(SS)" pad="8"/>
<connect gate="G$1" pin="PB1(SCK)" pad="9"/>
<connect gate="G$1" pin="PB2(MOSI)" pad="10"/>
<connect gate="G$1" pin="PB3(MISO)" pad="11"/>
<connect gate="G$1" pin="PB4(ADC11)" pad="28"/>
<connect gate="G$1" pin="PB5(ADC12)" pad="29"/>
<connect gate="G$1" pin="PB6(ADC13)" pad="30"/>
<connect gate="G$1" pin="PB7" pad="12"/>
<connect gate="G$1" pin="PC6" pad="31"/>
<connect gate="G$1" pin="PC7" pad="32"/>
<connect gate="G$1" pin="PD0(SCL)" pad="18"/>
<connect gate="G$1" pin="PD1(SDA)" pad="19"/>
<connect gate="G$1" pin="PD2(RX)" pad="20"/>
<connect gate="G$1" pin="PD3(TX)" pad="21"/>
<connect gate="G$1" pin="PD4(ADC8)" pad="25"/>
<connect gate="G$1" pin="PD5" pad="22"/>
<connect gate="G$1" pin="PD6(ADC9)" pad="26"/>
<connect gate="G$1" pin="PD7(ADC10)" pad="27"/>
<connect gate="G$1" pin="PE2/!HWB" pad="33"/>
<connect gate="G$1" pin="PE6" pad="1"/>
<connect gate="G$1" pin="PF0(ADC0)" pad="41"/>
<connect gate="G$1" pin="PF1(ADC1)" pad="40"/>
<connect gate="G$1" pin="PF4(ADC4)" pad="39"/>
<connect gate="G$1" pin="PF5(ADC5)" pad="38"/>
<connect gate="G$1" pin="PF6(ADC6)" pad="37"/>
<connect gate="G$1" pin="PF7(ADC7)" pad="36"/>
<connect gate="G$1" pin="UCAP" pad="6"/>
<connect gate="G$1" pin="UGND" pad="5"/>
<connect gate="G$1" pin="UVCC" pad="2"/>
<connect gate="G$1" pin="VBUS" pad="7"/>
<connect gate="G$1" pin="VCC@14" pad="14"/>
<connect gate="G$1" pin="VCC@34" pad="34"/>
<connect gate="G$1" pin="XTAL1" pad="17"/>
<connect gate="G$1" pin="XTAL2" pad="16"/>
</connects>
<technologies>
<technology name="">
<attribute name="PROD_ID" value="IC-10828"/>
<attribute name="VALUE" value="32U4"/>
</technology>
</technologies>
</device>
<device name="1:1-LESS_PASTE" package="QFN-44-NOPAD_1:1-LESS_PASTE">
<connects>
<connect gate="G$1" pin="!RESET" pad="13"/>
<connect gate="G$1" pin="AREF" pad="42"/>
<connect gate="G$1" pin="AVCC@24" pad="24"/>
<connect gate="G$1" pin="AVCC@44" pad="44"/>
<connect gate="G$1" pin="D+" pad="4"/>
<connect gate="G$1" pin="D-" pad="3"/>
<connect gate="G$1" pin="GND@15" pad="15"/>
<connect gate="G$1" pin="GND@23" pad="23"/>
<connect gate="G$1" pin="GND@35" pad="35"/>
<connect gate="G$1" pin="GND@43" pad="43"/>
<connect gate="G$1" pin="PB0(SS)" pad="8"/>
<connect gate="G$1" pin="PB1(SCK)" pad="9"/>
<connect gate="G$1" pin="PB2(MOSI)" pad="10"/>
<connect gate="G$1" pin="PB3(MISO)" pad="11"/>
<connect gate="G$1" pin="PB4(ADC11)" pad="28"/>
<connect gate="G$1" pin="PB5(ADC12)" pad="29"/>
<connect gate="G$1" pin="PB6(ADC13)" pad="30"/>
<connect gate="G$1" pin="PB7" pad="12"/>
<connect gate="G$1" pin="PC6" pad="31"/>
<connect gate="G$1" pin="PC7" pad="32"/>
<connect gate="G$1" pin="PD0(SCL)" pad="18"/>
<connect gate="G$1" pin="PD1(SDA)" pad="19"/>
<connect gate="G$1" pin="PD2(RX)" pad="20"/>
<connect gate="G$1" pin="PD3(TX)" pad="21"/>
<connect gate="G$1" pin="PD4(ADC8)" pad="25"/>
<connect gate="G$1" pin="PD5" pad="22"/>
<connect gate="G$1" pin="PD6(ADC9)" pad="26"/>
<connect gate="G$1" pin="PD7(ADC10)" pad="27"/>
<connect gate="G$1" pin="PE2/!HWB" pad="33"/>
<connect gate="G$1" pin="PE6" pad="1"/>
<connect gate="G$1" pin="PF0(ADC0)" pad="41"/>
<connect gate="G$1" pin="PF1(ADC1)" pad="40"/>
<connect gate="G$1" pin="PF4(ADC4)" pad="39"/>
<connect gate="G$1" pin="PF5(ADC5)" pad="38"/>
<connect gate="G$1" pin="PF6(ADC6)" pad="37"/>
<connect gate="G$1" pin="PF7(ADC7)" pad="36"/>
<connect gate="G$1" pin="UCAP" pad="6"/>
<connect gate="G$1" pin="UGND" pad="5"/>
<connect gate="G$1" pin="UVCC" pad="2"/>
<connect gate="G$1" pin="VBUS" pad="7"/>
<connect gate="G$1" pin="VCC@14" pad="14"/>
<connect gate="G$1" pin="VCC@34" pad="34"/>
<connect gate="G$1" pin="XTAL1" pad="17"/>
<connect gate="G$1" pin="XTAL2" pad="16"/>
</connects>
<technologies>
<technology name="">
<attribute name="PROD_ID" value="IC-10828"/>
<attribute name="VALUE" value="32U4"/>
</technology>
</technologies>
</device>
<device name="TQFP-44" package="TQFP44">
<connects>
<connect gate="G$1" pin="!RESET" pad="13"/>
<connect gate="G$1" pin="AREF" pad="42"/>
<connect gate="G$1" pin="AVCC@24" pad="24"/>
<connect gate="G$1" pin="AVCC@44" pad="44"/>
<connect gate="G$1" pin="D+" pad="4"/>
<connect gate="G$1" pin="D-" pad="3"/>
<connect gate="G$1" pin="GND@15" pad="15"/>
<connect gate="G$1" pin="GND@23" pad="23"/>
<connect gate="G$1" pin="GND@35" pad="35"/>
<connect gate="G$1" pin="GND@43" pad="43"/>
<connect gate="G$1" pin="PB0(SS)" pad="8"/>
<connect gate="G$1" pin="PB1(SCK)" pad="9"/>
<connect gate="G$1" pin="PB2(MOSI)" pad="10"/>
<connect gate="G$1" pin="PB3(MISO)" pad="11"/>
<connect gate="G$1" pin="PB4(ADC11)" pad="28"/>
<connect gate="G$1" pin="PB5(ADC12)" pad="29"/>
<connect gate="G$1" pin="PB6(ADC13)" pad="30"/>
<connect gate="G$1" pin="PB7" pad="12"/>
<connect gate="G$1" pin="PC6" pad="31"/>
<connect gate="G$1" pin="PC7" pad="32"/>
<connect gate="G$1" pin="PD0(SCL)" pad="18"/>
<connect gate="G$1" pin="PD1(SDA)" pad="19"/>
<connect gate="G$1" pin="PD2(RX)" pad="20"/>
<connect gate="G$1" pin="PD3(TX)" pad="21"/>
<connect gate="G$1" pin="PD4(ADC8)" pad="25"/>
<connect gate="G$1" pin="PD5" pad="22"/>
<connect gate="G$1" pin="PD6(ADC9)" pad="26"/>
<connect gate="G$1" pin="PD7(ADC10)" pad="27"/>
<connect gate="G$1" pin="PE2/!HWB" pad="33"/>
<connect gate="G$1" pin="PE6" pad="1"/>
<connect gate="G$1" pin="PF0(ADC0)" pad="41"/>
<connect gate="G$1" pin="PF1(ADC1)" pad="40"/>
<connect gate="G$1" pin="PF4(ADC4)" pad="39"/>
<connect gate="G$1" pin="PF5(ADC5)" pad="38"/>
<connect gate="G$1" pin="PF6(ADC6)" pad="37"/>
<connect gate="G$1" pin="PF7(ADC7)" pad="36"/>
<connect gate="G$1" pin="UCAP" pad="6"/>
<connect gate="G$1" pin="UGND" pad="5"/>
<connect gate="G$1" pin="UVCC" pad="2"/>
<connect gate="G$1" pin="VBUS" pad="7"/>
<connect gate="G$1" pin="VCC@14" pad="14"/>
<connect gate="G$1" pin="VCC@34" pad="34"/>
<connect gate="G$1" pin="XTAL1" pad="17"/>
<connect gate="G$1" pin="XTAL2" pad="16"/>
</connects>
<technologies>
<technology name="">
<attribute name="PROD_ID" value="IC-11161"/>
<attribute name="VALUE" value="32U4"/>
</technology>
</technologies>
</device>
</devices>
</deviceset>
</devicesets>
</library>
</libraries>
<attributes>
</attributes>
<variantdefs>
</variantdefs>
<parts>
<part name="U$1" library="SparkFun-IC-Microcontroller" deviceset="ATMEGA32U4" device="QFN" value="32U4"/>
<part name="U$2" library="SparkFun-IC-Microcontroller" deviceset="ATMEGA32U4" device="QFN2" value="32U4"/>
<part name="U$3" library="SparkFun-IC-Microcontroller" deviceset="ATMEGA32U4" device="TQFP-44" value="32U4"/>
<part name="U$4" library="SparkFun-IC-Microcontroller" deviceset="ATMEGA32U4" device="1:1" value="32U4"/>
<part name="U$5" library="SparkFun-IC-Microcontroller" deviceset="ATMEGA32U4" device="1:1-LESS_PASTE" value="32U4"/>
</parts>
<sheets>
<sheet>
<plain>
</plain>
<busses>
</busses>
<nets>
</nets>
</sheet>
</sheets>
</schematic>
</drawing>
</eagle>
