<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE eagle SYSTEM "eagle.dtd">
<eagle version="9.4.2">
<drawing>
<board>
<plain>
<wire x1="0" y1="0" x2="24.11" y2="0" width="0" layer="20"/>
<wire x1="24.11" y1="0" x2="24.11" y2="18.466" width="0" layer="20"/>
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<wire x1="0" y1="18.466" x2="0" y2="0" width="0" layer="20"/>
<text>VCC SDA  SCL  INT  NC  GND</text>
<text>GND VBAT</text>
<text>DS1339 Real Time Clock</text>
<text>chip@mcclellands.org 
8-21-19</text>
<text>GND  NC  INT  SCL  SDA VCC</text>
</plain>
<libraries>
<library name="SparkFun-Aesthetics">
<description>&lt;h3&gt;SparkFun Aesthetics&lt;/h3&gt;
This library contiains non-functional items such as logos, build/ordering notes, 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 &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="FIDUCIAL-MICRO">
<description>&lt;h3&gt;Fiducial - Circle, 0.25in&lt;/h3&gt;
&lt;p&gt;Point-of-reference for pick-and-place machines and other optical instruments.&lt;/p&gt;
&lt;p&gt;Devices using:
&lt;ul&gt;&lt;li&gt;FIDUCIAL&lt;/li&gt;&lt;/ul&gt;&lt;/p&gt;</description>
</package>
<package name="CREATIVE_COMMONS">
<description>&lt;h3&gt;Creative Commons License Template&lt;/h3&gt;
&lt;p&gt;CC BY-SA 4.0 License with &lt;a href="https://creativecommons.org/licenses/by-sa/4.0/"&gt;link to license&lt;/a&gt; and placeholder for designer name.&lt;/p&gt;
&lt;p&gt;Devices using:
&lt;ul&gt;&lt;li&gt;FRAME_LEDGER&lt;/li&gt;
&lt;li&gt;FRAME_LETTER&lt;/li&gt;&lt;/ul&gt;&lt;/p&gt;</description>
</package>
<package name="OSHW-LOGO-MINI">
<description>&lt;h3&gt;Open-Source Hardware (OSHW) Logo - Mini - Silkscreen&lt;/h3&gt;
&lt;p&gt;Silkscreen logo for open-source hardware designs.&lt;/p&gt;
&lt;p&gt;Devices using:
&lt;ul&gt;&lt;li&gt;OSHW_LOGO&lt;/li&gt;&lt;/ul&gt;&lt;/p&gt;</description>
</package>
</packages>
</library>
<library name="SparkFun-Connectors">
<description>&lt;h3&gt;SparkFun Connectors&lt;/h3&gt;
This library contains electrically-functional connectors. 
&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="1X06_LOCK">
<description>&lt;h3&gt;Plated Through Hole - 6 Pin with Locking Footprint&lt;/h3&gt;
Holes are offset 0.005" from center, locking pins in place during soldering.
&lt;p&gt;Specifications:
&lt;ul&gt;&lt;li&gt;Pin count:6&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_06&lt;/li&gt;
&lt;/ul&gt;&lt;/p&gt;</description>
</package>
<package name="1X02">
<description>&lt;h3&gt;Plated Through Hole&lt;/h3&gt;
&lt;p&gt;Specifications:
&lt;ul&gt;&lt;li&gt;Pin count:2&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_02&lt;/li&gt;
&lt;/ul&gt;&lt;/p&gt;</description>
</package>
</packages>
</library>
<library name="SparkFun-Resistors">
<description>&lt;h3&gt;SparkFun Resistors&lt;/h3&gt;
This library contains resistors. Reference designator:R. 
&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="0805">
<description>&lt;p&gt;&lt;b&gt;Generic 2012 (0805) package&lt;/b&gt;&lt;/p&gt;
&lt;p&gt;0.2mm courtyard excess rounded to nearest 0.05mm.&lt;/p&gt;</description>
</package>
</packages>
</library>
<library name="DS1339 RTC Library">
<packages>
<package name="SOP65P490X110-8N">
</package>
<package name="XTAL_ECS-.327-6-17X-TR">
</package>
<package name="BATTCON_12MM">
<description>&lt;h3&gt;12mm Coin Cell (CR1225) Battery Holder - SMD&lt;/h3&gt;
&lt;p&gt;Holds battery in place with friction. The metal housing connects to the positive side of the battery and the PCB pad underneath is connected to the negative side.&lt;/p&gt;
&lt;p&gt;&lt;a href="https://cdn.sparkfun.com/datasheets/Prototyping/KEY-3000.pdf"&gt;Datasheet&lt;/a&gt;&lt;/p&gt;
&lt;h4&gt;Devices Using&lt;/h4&gt;
&lt;ul&gt;&lt;li&gt;BATTERY&lt;/li&gt;&lt;/ul&gt;</description>
</package>
</packages>
</library>
</libraries>
<attributes>
</attributes>
<variantdefs>
</variantdefs>
<elements>
<element name="CR1225" library="DS1339 RTC Library" package="BATTCON_12MM" value="">
<attribute name="NAME"/>
<attribute name="PROD_ID" value="BATT-08044"/>
<attribute name="SF_SKU" value="PRT-10592"/>
<attribute name="VALUE"/>
</element>
<element name="FD1" library="SparkFun-Aesthetics" package="FIDUCIAL-MICRO" value="FIDUCIALUFIDUCIAL"/>
<element name="FD2" library="SparkFun-Aesthetics" package="FIDUCIAL-MICRO" value="FIDUCIALUFIDUCIAL"/>
<element name="FRAME1" library="SparkFun-Aesthetics" package="CREATIVE_COMMONS" value="FRAME-LETTER"/>
<element name="J1" library="SparkFun-Connectors" package="1X06_LOCK" value="">
<attribute name="VALUE"/>
</element>
<element name="J2" library="SparkFun-Connectors" package="1X02" value="">
<attribute name="VALUE"/>
</element>
<element name="R1" library="SparkFun-Resistors" package="0805" value=" ">
<attribute name="NAME"/>
<attribute name="PROD_ID" value=" "/>
<attribute name="VALUE"/>
</element>
<element name="R2" library="SparkFun-Resistors" package="0805" value=" ">
<attribute name="NAME"/>
<attribute name="PROD_ID" value=" "/>
<attribute name="VALUE"/>
</element>
<element name="R3" library="SparkFun-Resistors" package="0805" value=" ">
<attribute name="NAME"/>
<attribute name="PROD_ID" value=" "/>
<attribute name="VALUE"/>
</element>
<element name="U1" library="DS1339 RTC Library" package="SOP65P490X110-8N" value="DS1339AU">
<attribute name="DESCRIPTION" value=" Real Time Clock Serial 8-Pin uMAX "/>
<attribute name="DIGI-KEY_PART_NUMBER" value="DS1339AU+-ND"/>
<attribute name="DIGI-KEY_PURCHASE_URL" value="https://www.digikey.com/product-detail/en/maxim-integrated/DS1339AU-/DS1339AU--ND/3440513?utm_source=snapeda&amp;utm_medium=aggregator&amp;utm_campaign=symbol"/>
<attribute name="MF" value="Maxim Integrated"/>
<attribute name="MP" value="DS1339AU+"/>
<attribute name="NAME"/>
<attribute name="PACKAGE" value="&amp;amp;MICRO;MAX-8 Maxim"/>
<attribute name="VALUE"/>
</element>
<element name="Y1" library="DS1339 RTC Library" package="XTAL_ECS-.327-6-17X-TR" value="ECS-.327-6-17X-TR">
<attribute name="DESCRIPTION" value=" ECX-306X Series 32.768 kHz ±20 ppm 6 pF -40 to +85 °C SMT Tuning Fork Crystal "/>
<attribute name="DIGI-KEY_PART_NUMBER" value="XC1307CT-ND"/>
<attribute name="DIGI-KEY_PURCHASE_URL" value="https://www.digikey.com/product-detail/en/ecs-inc/ECS-.327-6-17X-TR/XC1307CT-ND/827771?utm_source=snapeda&amp;utm_medium=aggregator&amp;utm_campaign=symbol"/>
<attribute name="MF" value="ECS Inc."/>
<attribute name="MP" value="ECS-.327-6-17X-TR"/>
<attribute name="NAME"/>
<attribute name="PACKAGE" value="4-4 ECS International"/>
</element>
<element name="LOGO1" library="SparkFun-Aesthetics" package="OSHW-LOGO-MINI" value="OSHW-LOGOMINI"/>
</elements>
<signals>
<signal name="VCC">
<contactref element="U1" pad="8"/>
<contactref element="R1" pad="2"/>
<contactref element="R3" pad="2"/>
<contactref element="R2" pad="2"/>
<contactref element="J1" pad="1"/>
</signal>
<signal name="GND">
<contactref element="U1" pad="4"/>
<contactref element="CR1225" pad="GND"/>
<contactref element="J2" pad="1"/>
<contactref element="Y1" pad="3"/>
<contactref element="Y1" pad="2"/>
<contactref element="J1" pad="6"/>
</signal>
<signal name="N$8">
<contactref element="J1" pad="5"/>
</signal>
<signal name="INT">
<contactref element="J1" pad="4"/>
<contactref element="R3" pad="1"/>
<contactref element="U1" pad="7"/>
</signal>
<signal name="SCL">
<contactref element="J1" pad="3"/>
<contactref element="R1" pad="1"/>
<contactref element="U1" pad="6"/>
</signal>
<signal name="SDA">
<contactref element="J1" pad="2"/>
<contactref element="R2" pad="1"/>
<contactref element="U1" pad="5"/>
</signal>
<signal name="VBACKUP">
<contactref element="J2" pad="2"/>
<contactref element="U1" pad="3"/>
<contactref element="CR1225" pad="PWR@2"/>
</signal>
<signal name="N$1">
<contactref element="U1" pad="1"/>
<contactref element="Y1" pad="1"/>
</signal>
<signal name="N$2">
<contactref element="U1" pad="2"/>
<contactref element="Y1" pad="4"/>
</signal>
</signals>
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