| U1 | AT89x51xxP | 8-bit Microcontroller with 4K Bytes Flash, DIP-40 |
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| U2 | AMS1117-1.5 | 1A Low Dropout regulator, positive, 1.5V fixed output, SOT-223 |
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| C1,C2 | 0.022u | SMD 0201 MLCC capacitor, Alternate KiCad Library |
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| C3,C7 | 10u | THT Axial Electrolytic Capacitor, 10.0mm Length, 4.5mm Diameter, 15.00mm Pitch, European Symbol, Alternate KiCad Library |
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| C4-C6 | 100n | SMD 0201 MLCC capacitor, Alternate KiCad Library |
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| C8 | 100u | THT Axial Electrolytic Capacitor, 10.0mm Length, 4.5mm Diameter, 15.00mm Pitch, European Symbol, Alternate KiCad Library |
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| D1 | LED | Light emitting diode |
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| J1 | 5V | Generic connector, single row, 01x03, script generated |
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| J2 | 3V3 | Generic connector, single row, 01x03, script generated |
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| J3 | GND | Generic connector, single row, 01x03, script generated |
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| J4 | UART | Generic connector, single row, 01x04, script generated (kicad-library-utils/schlib/autogen/connector/) |
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| J5 | I2C | Generic connector, single row, 01x04, script generated (kicad-library-utils/schlib/autogen/connector/) |
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| J6 | Barrel_Jack_Switch | DC Barrel Jack with an internal switch |
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| R1 | 180R | Resistor |
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| R2-R5 | 8.2K | Resistor |
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| X1 | 11.0592MHZ | C26-LF Quartz crystal, Vertical, Alternate KiCad Library |
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