schematics
eyalabraham
a repository that tracks the electronic schematics I used in various projects
Components (21)
| Reference | Value | Description |
|---|---|---|
| U1 | 74LS245,ATmega328-P | 20MHz, 32kB Flash, 2kB SRAM, 1kB EEPROM, DIP-28,Octal BUS Transceivers, 3-State outputs |
| U2-U4 | 74LS244 | Octal Buffer and Line Driver With 3-State Output, active-low enables, non-inverting outputs |
| U5 | 74LS08 | Quad And2 |
| U6 | 74LS138 | Decoder 3 to 8 active low outputs |
| U7 | 16550 | PC16550D, Universal Asynchronous Receiver/Transmitter with FIFOs, PDIP-40 |
| U8 | 4.9152MHz | Crystal Clock Oscillator, DIP8-style metal package |
| U9 | MAX232 | Dual RS232 driver/receiver, 5V supply, 120kb/s, 0C-70C |
| U10 | 8255A | Programmable Peripheral Interface, PDIP-40 |
| U11,U15 | 74LS04 | Hex Inverter |
| U12 | 74LS00 | quad 2-input NAND gate |
| U13 | 74LS20 | Dual 4-input NAND |
| U14 | 74LS32 | Quad 2-input OR |
| U16 | 28C256 | Paged Parallel EEPROM 256Kb (32K x 8), DIP-28/SOIC-28 |
| C1-C5 | 1uF | Polarized capacitor, US symbol |
| CONN1 | Bus ISA 8bit,PS/2 keyboard | 8-bit ISA-PC bus connector,Generic connector, single row, 01x06, script generated |
| CONN2 | COM1,ICP | 9-pin D-SUB connector, pins (male),Generic connector, single row, 01x06, script generated |
| CONN3 | IDE,PC/XT ribbon | Generic connector, double row, 02x08, odd/even pin numbering scheme (row 1 odd numbers, row 2 even numbers), script generated (kicad-library-utils/schlib/autogen/connector/),Generic connector, double row, 02x20, odd/even pin numbering scheme (row 1 odd numbers, row 2 even numbers), script generated (kicad-library-utils/schlib/autogen/connector/) |
| D1 | LED | Light emitting diode |
| R1 | 10k,1k | Resistor, US symbol |
| R2,R3 | 120,4k7 | Resistor, US symbol |
| R3,R4 | 4k7 | Resistor, US symbol |