Apple-1-HW/RC6502-Apple-1-Replica
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RC6502-Apple-1-Replica/RC6502 Reset Circuit/Reset circuit.xml

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Reset circuit revision B Fixed floating inputs on hex inverter (needed when using HCT), added 74HCT74 in order to allow clock division by 2 and 4 (in case missing matching TTL quartz crystal or want even slower clock than stock).
2017-06-10 17:58:36 +00:00
<?xml version="1.0" encoding="UTF-8"?>
<export version="D">
<design>
<source>D:/ownCloud/Documents/Projects/RC6502/RC6502 Reset Circuit/Reset circuit.sch</source>
<date>10/06/2017 19:54:17</date>
<tool>Eeschema 4.0.6</tool>
<sheet number="1" name="/" tstamps="/">
<title_block>
<title/>
<company/>
<rev/>
<date/>
<source>Reset circuit.sch</source>
<comment number="1" value=""/>
<comment number="2" value=""/>
<comment number="3" value=""/>
<comment number="4" value=""/>
</title_block>
</sheet>
</design>
<components>
<comp ref="U1">
<value>NE555</value>
<footprint>Housings_DIP:DIP-8_W7.62mm</footprint>
<libsource lib="linear" part="NE555"/>
<sheetpath names="/" tstamps="/"/>
<tstamp>590A44E3</tstamp>
</comp>
<comp ref="R1">
<value>1M</value>
<footprint>Resistors_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal</footprint>
<libsource lib="device" part="R"/>
<sheetpath names="/" tstamps="/"/>
<tstamp>5909CC66</tstamp>
</comp>
<comp ref="C1">
<value>100nF</value>
<footprint>Capacitors_THT:C_Disc_D4.7mm_W2.5mm_P5.00mm</footprint>
<libsource lib="device" part="C"/>
<sheetpath names="/" tstamps="/"/>
<tstamp>5909CD8B</tstamp>
</comp>
<comp ref="C3">
<value>100nF</value>
<footprint>Capacitors_THT:C_Disc_D4.7mm_W2.5mm_P5.00mm</footprint>
<libsource lib="device" part="C"/>
<sheetpath names="/" tstamps="/"/>
<tstamp>5909D33C</tstamp>
</comp>
<comp ref="R2">
<value>47k</value>
<footprint>Resistors_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal</footprint>
<libsource lib="device" part="R"/>
<sheetpath names="/" tstamps="/"/>
<tstamp>5909D4EB</tstamp>
</comp>
<comp ref="C2">
<value>10uF</value>
<footprint>Capacitors_THT:CP_Radial_D4.0mm_P2.00mm</footprint>
<libsource lib="device" part="CP"/>
<sheetpath names="/" tstamps="/"/>
<tstamp>5909D5AC</tstamp>
</comp>
<comp ref="U2">
<value>74HCT04</value>
<footprint>Housings_DIP:DIP-14_W7.62mm</footprint>
<libsource lib="74xx" part="74LS04"/>
<sheetpath names="/" tstamps="/"/>
<tstamp>5909E441</tstamp>
</comp>
<comp ref="SW1">
<value>RESET</value>
<footprint>Buttons_Switches_THT:SW_PUSH_6mm</footprint>
<libsource lib="switches" part="SW_SPST"/>
<sheetpath names="/" tstamps="/"/>
<tstamp>5909ECDD</tstamp>
</comp>
<comp ref="R3">
<value>1k</value>
<footprint>Resistors_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal</footprint>
<libsource lib="device" part="R"/>
<sheetpath names="/" tstamps="/"/>
<tstamp>590A060A</tstamp>
</comp>
<comp ref="X1">
<value>1MHz</value>
<footprint>Oscillators:Oscillator_DIP-14</footprint>
<libsource lib="Oscillators" part="ACO-xxxMHz"/>
<sheetpath names="/" tstamps="/"/>
<tstamp>590A1756</tstamp>
</comp>
<comp ref="J1">
<value>CONN_01X39</value>
<footprint>Pin_Headers:Pin_Header_Angled_1x39_Pitch2.54mm</footprint>
<libsource lib="conn" part="CONN_01X39"/>
<sheetpath names="/" tstamps="/"/>
<tstamp>590BF97A</tstamp>
</comp>
<comp ref="C4">
<value>100nF</value>
<footprint>Capacitors_THT:C_Disc_D4.7mm_W2.5mm_P5.00mm</footprint>
<libsource lib="device" part="C"/>
<sheetpath names="/" tstamps="/"/>
<tstamp>591A9FB0</tstamp>
</comp>
<comp ref="U3">
<value>74HCT74</value>
<footprint>Housings_DIP:DIP-14_W7.62mm_Socket</footprint>
<libsource lib="74xx" part="74LS74"/>
<sheetpath names="/" tstamps="/"/>
<tstamp>593C2A48</tstamp>
</comp>
<comp ref="C5">
<value>100nF</value>
<footprint>Capacitors_THT:C_Disc_D4.7mm_W2.5mm_P5.00mm</footprint>
<libsource lib="device" part="C"/>
<sheetpath names="/" tstamps="/"/>
<tstamp>593C7AE0</tstamp>
</comp>
<comp ref="J2">
<value>CONN_02X04</value>
<footprint>Pin_Headers:Pin_Header_Straight_2x04_Pitch2.54mm</footprint>
<libsource lib="conn" part="CONN_02X04"/>
<sheetpath names="/" tstamps="/"/>
<tstamp>593CC468</tstamp>
</comp>
<comp ref="D1">
<value>Power</value>
<footprint>LEDs:LED_D5.0mm</footprint>
<libsource lib="device" part="LED"/>
<sheetpath names="/" tstamps="/"/>
<tstamp>593CDC46</tstamp>
</comp>
<comp ref="R4">
<value>330</value>
<footprint>Resistors_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal</footprint>
<libsource lib="device" part="R"/>
<sheetpath names="/" tstamps="/"/>
<tstamp>593CE753</tstamp>
</comp>
</components>
<libparts>
<libpart lib="74xx" part="74LS04">
<description>Hex Inverseur</description>
<fields>
<field name="Reference">U</field>
<field name="Value">74LS04</field>
</fields>
<pins>
<pin num="1" name="~" type="input"/>
<pin num="2" name="~" type="output"/>
<pin num="3" name="~" type="input"/>
<pin num="4" name="~" type="output"/>
<pin num="5" name="~" type="input"/>
<pin num="6" name="~" type="output"/>
<pin num="7" name="GND" type="power_in"/>
<pin num="8" name="~" type="output"/>
<pin num="9" name="~" type="input"/>
<pin num="10" name="~" type="output"/>
<pin num="11" name="~" type="input"/>
<pin num="12" name="~" type="output"/>
<pin num="13" name="~" type="input"/>
<pin num="14" name="VCC" type="power_in"/>
</pins>
</libpart>
<libpart lib="74xx" part="74LS74">
<aliases>
<alias>74HC74</alias>
</aliases>
<description>Dual D FlipFlop, Set &amp; Reset</description>
<docs>74xx/74hc_hct74.pdf</docs>
<fields>
<field name="Reference">U</field>
<field name="Value">74LS74</field>
</fields>
<pins>
<pin num="1" name="Cd" type="input"/>
<pin num="2" name="D" type="input"/>
<pin num="3" name="Cp" type="input"/>
<pin num="4" name="Sd" type="input"/>
<pin num="5" name="Q" type="output"/>
<pin num="6" name="~Q" type="output"/>
<pin num="7" name="GND" type="power_in"/>
<pin num="8" name="~Q" type="output"/>
<pin num="9" name="Q" type="output"/>
<pin num="10" name="Sd" type="input"/>
<pin num="11" name="Cp" type="input"/>
<pin num="12" name="D" type="input"/>
<pin num="13" name="Cd" type="input"/>
<pin num="14" name="VCC" type="power_in"/>
</pins>
</libpart>
<libpart lib="device" part="C">
<description>Unpolarized capacitor</description>
<footprints>
<fp>C_*</fp>
</footprints>
<fields>
<field name="Reference">C</field>
<field name="Value">C</field>
</fields>
<pins>
<pin num="1" name="~" type="passive"/>
<pin num="2" name="~" type="passive"/>
</pins>
</libpart>
<libpart lib="conn" part="CONN_01X39">
<description>Connector, single row, 01x39, pin header</description>
<footprints>
<fp>Pin_Header_Straight_1X*</fp>
<fp>Pin_Header_Angled_1X*</fp>
<fp>Socket_Strip_Straight_1X*</fp>
<fp>Socket_Strip_Angled_1X*</fp>
</footprints>
<fields>
<field name="Reference">J</field>
<field name="Value">CONN_01X39</field>
</fields>
<pins>
<pin num="1" name="P1" type="passive"/>
<pin num="2" name="P2" type="passive"/>
<pin num="3" name="P3" type="passive"/>
<pin num="4" name="P4" type="passive"/>
<pin num="5" name="P5" type="passive"/>
<pin num="6" name="P6" type="passive"/>
<pin num="7" name="P7" type="passive"/>
<pin num="8" name="P8" type="passive"/>
<pin num="9" name="P9" type="passive"/>
<pin num="10" name="P10" type="passive"/>
<pin num="11" name="P11" type="passive"/>
<pin num="12" name="P12" type="passive"/>
<pin num="13" name="P13" type="passive"/>
<pin num="14" name="P14" type="passive"/>
<pin num="15" name="P15" type="passive"/>
<pin num="16" name="P16" type="passive"/>
<pin num="17" name="P17" type="passive"/>
<pin num="18" name="P18" type="passive"/>
<pin num="19" name="P19" type="passive"/>
<pin num="20" name="P20" type="passive"/>
<pin num="21" name="P21" type="passive"/>
<pin num="22" name="P22" type="passive"/>
<pin num="23" name="P23" type="passive"/>
<pin num="24" name="P24" type="passive"/>
<pin num="25" name="P25" type="passive"/>
<pin num="26" name="P26" type="passive"/>
<pin num="27" name="P27" type="passive"/>
<pin num="28" name="P28" type="passive"/>
<pin num="29" name="P29" type="passive"/>
<pin num="30" name="P30" type="passive"/>
<pin num="31" name="P31" type="passive"/>
<pin num="32" name="P32" type="passive"/>
<pin num="33" name="P33" type="passive"/>
<pin num="34" name="P34" type="passive"/>
<pin num="35" name="P35" type="passive"/>
<pin num="36" name="P36" type="passive"/>
<pin num="37" name="P37" type="passive"/>
<pin num="38" name="P38" type="passive"/>
<pin num="39" name="P39" type="passive"/>
</pins>
</libpart>
<libpart lib="conn" part="CONN_02X04">
<description>Connector, double row, 02x04, pin header</description>
<footprints>
<fp>Pin_Header_Straight_2X*</fp>
<fp>Pin_Header_Angled_2X*</fp>
<fp>Socket_Strip_Straight_2X*</fp>
<fp>Socket_Strip_Angled_2X*</fp>
<fp>IDC_Header_Straight_*</fp>
</footprints>
<fields>
<field name="Reference">J</field>
<field name="Value">CONN_02X04</field>
</fields>
<pins>
<pin num="1" name="P1" type="passive"/>
<pin num="2" name="P2" type="passive"/>
<pin num="3" name="P3" type="passive"/>
<pin num="4" name="P4" type="passive"/>
<pin num="5" name="P5" type="passive"/>
<pin num="6" name="P6" type="passive"/>
<pin num="7" name="P7" type="passive"/>
<pin num="8" name="P8" type="passive"/>
</pins>
</libpart>
<libpart lib="device" part="CP">
<description>Polarised capacitor</description>
<footprints>
<fp>CP_*</fp>
</footprints>
<fields>
<field name="Reference">C</field>
<field name="Value">CP</field>
</fields>
<pins>
<pin num="1" name="~" type="passive"/>
<pin num="2" name="~" type="passive"/>
</pins>
</libpart>
<libpart lib="Oscillators" part="DGOF5S3">
<aliases>
<alias>ACO-xxxMHz</alias>
<alias>GTXO-S14T</alias>
<alias>TCXO-14</alias>
</aliases>
<description>HCMOS Crystal Clock Oscillator, DIP14-style metal package</description>
<docs>http://www.conwin.com/datasheets/cx/cx030.pdf</docs>
<footprints>
<fp>Oscillator*DIP*14*</fp>
</footprints>
<fields>
<field name="Reference">X</field>
<field name="Value">DGOF5S3</field>
<field name="Footprint">Oscillators:Oscillator_DIP-14</field>
</fields>
<pins>
<pin num="1" name="NC" type="NotConnected"/>
<pin num="7" name="GND" type="power_in"/>
<pin num="8" name="OUT" type="output"/>
<pin num="14" name="Vcc" type="power_in"/>
</pins>
</libpart>
<libpart lib="device" part="LED">
<description>LED generic</description>
<footprints>
<fp>LED*</fp>
</footprints>
<fields>
<field name="Reference">D</field>
<field name="Value">LED</field>
</fields>
<pins>
<pin num="1" name="K" type="passive"/>
<pin num="2" name="A" type="passive"/>
</pins>
</libpart>
<libpart lib="linear" part="LM555N">
<aliases>
<alias>NE555</alias>
<alias>ICM7555</alias>
<alias>LMC555</alias>
<alias>TLC555</alias>
<alias>NA555</alias>
<alias>SE555</alias>
<alias>SA555</alias>
</aliases>
<description>555-series timer IC</description>
<docs>http://www.ti.com/lit/ds/symlink/ne555.pdf</docs>
<footprints>
<fp>SOIC*Pitch1.27mm*</fp>
<fp>DIP*W7.62mm*</fp>
<fp>TSSOP*Pitch0.65mm*</fp>
</footprints>
<fields>
<field name="Reference">U</field>
<field name="Value">LM555N</field>
</fields>
<pins>
<pin num="1" name="GND" type="power_in"/>
<pin num="2" name="TR" type="input"/>
<pin num="3" name="Q" type="output"/>
<pin num="4" name="R" type="input"/>
<pin num="5" name="CV" type="input"/>
<pin num="6" name="THR" type="input"/>
<pin num="7" name="DIS" type="input"/>
<pin num="8" name="VCC" type="power_in"/>
</pins>
</libpart>
<libpart lib="device" part="R">
<description>Resistor</description>
<footprints>
<fp>R_*</fp>
<fp>R_*</fp>
</footprints>
<fields>
<field name="Reference">R</field>
<field name="Value">R</field>
</fields>
<pins>
<pin num="1" name="~" type="passive"/>
<pin num="2" name="~" type="passive"/>
</pins>
</libpart>
<libpart lib="switches" part="SW_SPST">
<description>Single Pole Single Throw (SPST) switch</description>
<fields>
<field name="Reference">SW</field>
<field name="Value">SW_SPST</field>
</fields>
<pins>
<pin num="1" name="A" type="input"/>
<pin num="2" name="B" type="input"/>
</pins>
</libpart>
</libparts>
<libraries>
<library logical="device">
<uri>C:\Program Files\KiCad\share\kicad\library\device.lib</uri>
</library>
<library logical="linear">
<uri>C:\Program Files\KiCad\share\kicad\library\linear.lib</uri>
</library>
<library logical="74xx">
<uri>C:\Program Files\KiCad\share\kicad\library\74xx.lib</uri>
</library>
<library logical="switches">
<uri>C:\Program Files\KiCad\share\kicad\library\switches.lib</uri>
</library>
<library logical="Oscillators">
<uri>C:\Program Files\KiCad\share\kicad\library\Oscillators.lib</uri>
</library>
<library logical="conn">
<uri>C:\Program Files\KiCad\share\kicad\library\conn.lib</uri>
</library>
</libraries>
<nets>
<net code="1" name="Net-(U1-Pad3)">
<node ref="U2" pin="1"/>
<node ref="U1" pin="3"/>
</net>
<net code="2" name="Net-(C2-Pad1)">
<node ref="U1" pin="7"/>
<node ref="C2" pin="1"/>
<node ref="U1" pin="6"/>
<node ref="R2" pin="2"/>
</net>
<net code="3" name="CLOCK/4">
<node ref="U3" pin="9"/>
<node ref="J2" pin="7"/>
</net>
<net code="4" name="CLOCK/2">
<node ref="J2" pin="5"/>
<node ref="U3" pin="5"/>
</net>
<net code="5" name="CLOCK">
<node ref="J2" pin="4"/>
<node ref="J1" pin="21"/>
<node ref="J2" pin="6"/>
<node ref="J2" pin="8"/>
</net>
<net code="6" name="Net-(D1-Pad2)">
<node ref="D1" pin="2"/>
<node ref="R4" pin="2"/>
</net>
<net code="7" name="Net-(J2-Pad1)">
<node ref="X1" pin="14"/>
<node ref="J2" pin="1"/>
</net>
<net code="8" name="VCC">
<node ref="U3" pin="14"/>
<node ref="U3" pin="1"/>
<node ref="C4" pin="1"/>
<node ref="R2" pin="1"/>
<node ref="U2" pin="14"/>
<node ref="R3" pin="2"/>
<node ref="U3" pin="4"/>
<node ref="U3" pin="13"/>
<node ref="J1" pin="18"/>
<node ref="U3" pin="10"/>
<node ref="J2" pin="2"/>
<node ref="R4" pin="1"/>
<node ref="U1" pin="4"/>
<node ref="U1" pin="8"/>
<node ref="C5" pin="1"/>
<node ref="C3" pin="1"/>
<node ref="R1" pin="1"/>
</net>
<net code="9" name="Net-(C1-Pad1)">
<node ref="SW1" pin="2"/>
<node ref="U1" pin="2"/>
<node ref="R1" pin="2"/>
<node ref="C1" pin="1"/>
</net>
<net code="10" name="Net-(U2-Pad10)">
<node ref="U2" pin="10"/>
</net>
<net code="11" name="GND">
<node ref="SW1" pin="1"/>
<node ref="U1" pin="1"/>
<node ref="C3" pin="2"/>
<node ref="C1" pin="2"/>
<node ref="U2" pin="7"/>
<node ref="C2" pin="2"/>
<node ref="U3" pin="7"/>
<node ref="C4" pin="2"/>
<node ref="X1" pin="7"/>
<node ref="U2" pin="11"/>
<node ref="U2" pin="9"/>
<node ref="U2" pin="5"/>
<node ref="C5" pin="2"/>
<node ref="D1" pin="1"/>
<node ref="J1" pin="17"/>
<node ref="U2" pin="3"/>
<node ref="U2" pin="13"/>
</net>
<net code="12" name="Net-(U2-Pad8)">
<node ref="U2" pin="8"/>
</net>
<net code="13" name="Net-(U2-Pad6)">
<node ref="U2" pin="6"/>
</net>
<net code="14" name="Net-(U2-Pad12)">
<node ref="U2" pin="12"/>
</net>
<net code="15" name="Net-(U2-Pad4)">
<node ref="U2" pin="4"/>
</net>
<net code="16" name="Net-(U3-Pad12)">
<node ref="U3" pin="8"/>
<node ref="U3" pin="12"/>
</net>
<net code="17" name="Net-(U3-Pad11)">
<node ref="U3" pin="2"/>
<node ref="U3" pin="6"/>
<node ref="U3" pin="11"/>
</net>
<net code="18" name="Net-(J1-Pad13)">
<node ref="J1" pin="13"/>
</net>
<net code="19" name="Net-(J1-Pad25)">
<node ref="J1" pin="25"/>
</net>
<net code="20" name="Net-(J1-Pad24)">
<node ref="J1" pin="24"/>
</net>
<net code="21" name="Net-(J1-Pad23)">
<node ref="J1" pin="23"/>
</net>
<net code="22" name="Net-(J1-Pad22)">
<node ref="J1" pin="22"/>
</net>
<net code="23" name="Net-(J1-Pad19)">
<node ref="J1" pin="19"/>
</net>
<net code="24" name="Net-(J1-Pad16)">
<node ref="J1" pin="16"/>
</net>
<net code="25" name="Net-(J1-Pad15)">
<node ref="J1" pin="15"/>
</net>
<net code="26" name="Net-(J1-Pad14)">
<node ref="J1" pin="14"/>
</net>
<net code="27" name="Net-(J1-Pad26)">
<node ref="J1" pin="26"/>
</net>
<net code="28" name="Net-(J1-Pad12)">
<node ref="J1" pin="12"/>
</net>
<net code="29" name="Net-(J1-Pad11)">
<node ref="J1" pin="11"/>
</net>
<net code="30" name="Net-(J1-Pad10)">
<node ref="J1" pin="10"/>
</net>
<net code="31" name="Net-(J1-Pad9)">
<node ref="J1" pin="9"/>
</net>
<net code="32" name="Net-(J1-Pad8)">
<node ref="J1" pin="8"/>
</net>
<net code="33" name="Net-(J1-Pad7)">
<node ref="J1" pin="7"/>
</net>
<net code="34" name="Net-(J1-Pad6)">
<node ref="J1" pin="6"/>
</net>
<net code="35" name="Net-(J1-Pad5)">
<node ref="J1" pin="5"/>
</net>
<net code="36" name="Net-(J1-Pad35)">
<node ref="J1" pin="35"/>
</net>
<net code="37" name="Net-(X1-Pad1)">
<node ref="X1" pin="1"/>
</net>
<net code="38" name="Net-(J1-Pad39)">
<node ref="J1" pin="39"/>
</net>
<net code="39" name="Net-(J1-Pad38)">
<node ref="J1" pin="38"/>
</net>
<net code="40" name="Net-(J1-Pad37)">
<node ref="J1" pin="37"/>
</net>
<net code="41" name="Net-(J1-Pad36)">
<node ref="J1" pin="36"/>
</net>
<net code="42" name="Net-(J1-Pad4)">
<node ref="J1" pin="4"/>
</net>
<net code="43" name="Net-(J1-Pad34)">
<node ref="J1" pin="34"/>
</net>
<net code="44" name="Net-(J1-Pad33)">
<node ref="J1" pin="33"/>
</net>
<net code="45" name="Net-(J1-Pad32)">
<node ref="J1" pin="32"/>
</net>
<net code="46" name="Net-(J1-Pad31)">
<node ref="J1" pin="31"/>
</net>
<net code="47" name="Net-(J1-Pad30)">
<node ref="J1" pin="30"/>
</net>
<net code="48" name="Net-(J1-Pad29)">
<node ref="J1" pin="29"/>
</net>
<net code="49" name="Net-(J1-Pad28)">
<node ref="J1" pin="28"/>
</net>
<net code="50" name="Net-(J1-Pad27)">
<node ref="J1" pin="27"/>
</net>
<net code="51" name="Net-(U1-Pad5)">
<node ref="U1" pin="5"/>
</net>
<net code="52" name="Net-(J1-Pad3)">
<node ref="J1" pin="3"/>
</net>
<net code="53" name="Net-(J1-Pad2)">
<node ref="J1" pin="2"/>
</net>
<net code="54" name="Net-(J1-Pad1)">
<node ref="J1" pin="1"/>
</net>
<net code="55" name="CLOCK/1">
<node ref="J2" pin="3"/>
<node ref="U3" pin="3"/>
<node ref="X1" pin="8"/>
</net>
<net code="56" name="RESET">
<node ref="U2" pin="2"/>
<node ref="J1" pin="20"/>
<node ref="R3" pin="1"/>
</net>
</nets>
</export>
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