<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE eagle SYSTEM "eagle.dtd">
<eagle version="7.6.0">
<drawing>
<library>
<packages>
<package name="DIL28">
<description>&lt;b&gt;28-Pin, Dual In-Line Package (DIP28 also known as DIL28)&lt;/b&gt;
&lt;p&gt;Pin pitch: 0.1 inches (2.54 mm)&lt;/p&gt;
&lt;p&gt;Distance between pins on opposite sides: 0.6 inches (15.24 mm)&lt;/p&gt;</description>
</package>
</packages>
<symbols>
<symbol name="2564">
<description>&lt;b&gt;TMS 2564-45&lt;/b&gt;

&lt;p&gt;65,536-Bit, Ultraviolet-Light Erasable, Electrically Programmable Read-Only Memory&lt;/p&gt;

&lt;p&gt;28-pin ceramic&lt;/br&gt;
Dual-In-Line Package&lt;/p&gt;

&lt;ul&gt;
&lt;li&gt;Organization: 8K x 8&lt;/li&gt;
&lt;li&gt;Single +5 V power supply&lt;/li&gt;
&lt;li&gt;Pin compatible with existing ROMs and EPROMS (8K, 16K, 32K, and 64K)&lt;/li&gt;
&lt;li&gt;All inputs/outputs fully TTL compatible&lt;/li&gt;
&lt;li&gt;Static operation (no clocks, no refresh)&lt;/li&gt;
&lt;li&gt;Max access/min cycle time: 450 ns&lt;/li&gt;
&lt;li&gt;8-Bit output for use in microprocessor-based systems&lt;/li&gt;
&lt;li&gt;N-channel silicon-gate technology&lt;/li&gt;
&lt;li&gt;3-State output buffers&lt;/li&gt;
&lt;li&gt;Guaranteed DC noise immunity with standard TTL loads&lt;/li&gt;
&lt;li&gt;No pull-up resistors required&lt;/li&gt;
&lt;li&gt;Low power dissipation:
  &lt;ul&gt;
    &lt;li&gt;Active: 400 mW typical&lt;/li&gt;
    &lt;li&gt;Standby: 75 mW typical&lt;/li&gt;
  &lt;/ul&gt;
&lt;/li&gt;
&lt;/ul&gt;</description>
<pin name="VPP" direction="in"/>
<pin name="A12" direction="in"/>
<pin name="A7" direction="in"/>
<pin name="A6" direction="in"/>
<pin name="A5" direction="in"/>
<pin name="A4" direction="in"/>
<pin name="A3" direction="in"/>
<pin name="A2" direction="in"/>
<pin name="A1" direction="in"/>
<pin name="A0" direction="in"/>
<pin name="D0" direction="hiz"/>
<pin name="D1" direction="hiz"/>
<pin name="D2" direction="hiz"/>
<pin name="D3" direction="hiz"/>
<pin name="D4" direction="hiz"/>
<pin name="D5" direction="hiz"/>
<pin name="D6" direction="hiz"/>
<pin name="D7" direction="hiz"/>
<pin name="!CS1" direction="in"/>
<pin name="A10" direction="in"/>
<pin name="!CS2" direction="in"/>
<pin name="A11" direction="in"/>
<pin name="A9" direction="in"/>
<pin name="A8" direction="in"/>
<pin name="PD/!PGM" direction="in"/>
</symbol>
<symbol name="PWRN">
<pin name="GND" direction="pwr"/>
<pin name="VCC@1" direction="pwr"/>
<pin name="VCC@2" direction="pwr"/>
</symbol>
</symbols>
<devicesets>
<deviceset name="2564" prefix="U" uservalue="yes">
<description>&lt;b&gt;MEMORY&lt;/b&gt;</description>
<gates>
<gate name="A" symbol="2564"/>
<gate name="P" symbol="PWRN"/>
</gates>
<devices>
<device name="" package="DIL28">
<connects>
<connect gate="A" pin="!CS1" pad="2"/>
<connect gate="A" pin="!CS2" pad="27"/>
<connect gate="A" pin="A0" pad="10"/>
<connect gate="A" pin="A1" pad="9"/>
<connect gate="A" pin="A10" pad="21"/>
<connect gate="A" pin="A11" pad="20"/>
<connect gate="A" pin="A12" pad="23"/>
<connect gate="A" pin="A2" pad="8"/>
<connect gate="A" pin="A3" pad="7"/>
<connect gate="A" pin="A4" pad="6"/>
<connect gate="A" pin="A5" pad="5"/>
<connect gate="A" pin="A6" pad="4"/>
<connect gate="A" pin="A7" pad="3"/>
<connect gate="A" pin="A8" pad="25"/>
<connect gate="A" pin="A9" pad="24"/>
<connect gate="A" pin="D0" pad="11"/>
<connect gate="A" pin="D1" pad="12"/>
<connect gate="A" pin="D2" pad="13"/>
<connect gate="A" pin="D3" pad="15"/>
<connect gate="A" pin="D4" pad="16"/>
<connect gate="A" pin="D5" pad="17"/>
<connect gate="A" pin="D6" pad="18"/>
<connect gate="A" pin="D7" pad="19"/>
<connect gate="A" pin="PD/!PGM" pad="22"/>
<connect gate="A" pin="VPP" pad="1"/>
<connect gate="P" pin="GND" pad="14"/>
<connect gate="P" pin="VCC@1" pad="28"/>
<connect gate="P" pin="VCC@2" pad="26"/>
</connects>
<technologies>
<technology name=""/>
</technologies>
</device>
</devices>
</deviceset>
</devicesets>
</library>
</drawing>
</eagle>
