8bit
Haxintosh
8bit computer!
Components (37)
| Reference | Value | Description |
|---|---|---|
| U1,U2,U24,U32,U36,U38,U42,U43,U54,U55,U67 | 74LS573 | 8-bit Latch 3-state outputs |
| U3,U4,U9,U10,U15,U16,U20,U21,U23,U25,U30,U37,U39-U41,U44-U47,U50-U53 | 74LS245 | Octal BUS Transceivers, 3-State outputs |
| U5-U8,U61 | 74LS161 | Synchronous 4-bit programmable binary Counter |
| U11-U14,U26,U27,U48,U49 | 74LS193 | Synchronous 4-bit Up/Down (2 clk) counter |
| U17 | 74LS138 | Decoder 3 to 8 active low outputs |
| U18 | 74LS20 | Dual 4-input NAND |
| U19 | HM62256BLP | 32,768-word × 8-bit High Speed CMOS Static RAM, 70ns, DIP-28 |
| U22 | KM28C64A | EEPROM 8K x 8, 5V, Not in Production, DIP-28 |
| U28,U29 | 74LS181 | Arithmetic logic unit |
| U31 | 74LS373 | 8-bit Latch, 3-state outputs |
| U33,U69-U76,U82 | 74LS08 | Quad And2 |
| U34,U62 | 74LS02 | quad 2-input NOR gate |
| U35,U81 | 74LS04 | Hex Inverter |
| U56 | ATmega328-P | 20MHz, 32kB Flash, 2kB SRAM, 1kB EEPROM, DIP-28 |
| U57-U60 | D198K | One digit 7 segment orangish-red LED, low current, common cathode |
| U63-U66 | 27C512 | OTP EPROM 512 KiBit |
| U68 | 74LS00 | quad 2-input NAND gate |
| U77 | 74LS86 | Quad 2-input XOR |
| U78-U80 | NE555P | Precision Timers, 555 compatible, PDIP-8 |
| U83 | 74LS32 | Quad 2-input OR |
| C1-C3,C5 | 0.01uF | Unpolarized capacitor |
| C4 | 0.1uF | Unpolarized capacitor |
| D1-D125,D129-D184 | LED | Light emitting diode |
| DS1 | WC1602A | LCD 16x2 Alphanumeric , 8 bit parallel bus, 5V VDD |
| J1 | CF | |
| J2 | EXTR | Generic connector, single row, 01x02, script generated (kicad-library-utils/schlib/autogen/connector/) |
| JP1 | Master | Jumper, 2-pole, open |
| R1-R68,R70,R72,R74,R76,R78,R80,R82,R84,R86,R88,R90,R92,R94,R96,R98,R100-R140,R145-R196,R201,R204-R206,R209 | 470 | Resistor |
| R69,R71,R73,R75,R77,R79,R81,R83,R85,R87,R89,R91,R93,R95,R97,R99,R144,R207,R208 | 1k | Resistor |
| R141,R142 | R | Resistor |
| R143 | 1M | Resistor |
| R197-R200,R202 | 0 | Resistor |
| R203 | 4.7k | Resistor |
| RV1 | 10k | Potentiometer |
| SW1 | RST | Push button switch, generic, two pins |
| SW2 | SW_Push | Push button switch, generic, two pins |
| SW3 | SW_SPDT | Switch, single pole double throw |