Minimal-UART-Computer-3
slu4coder
Version 3 of my educational DIY TTL computer built around a UART serial interface - now with blinkenlights!
Components (58)
| Reference | Value | Description |
|---|---|---|
| U1,U35 | 74HC00 | quad 2-input NAND gate |
| U2 | 74HC193 | Synchronous 4-bit Up/Down (2 clk) counter |
| U3,U6,U10,U14,U16,U18,U19,U25,U26,U28,U29 | 74HC161 | Synchronous 4-bit programmable binary Counter |
| U4 | 74HC595 | 8-bit serial in/out Shift Register 3-State Outputs |
| U5 | 74HC165 | Shift Register 8-bit, parallel load |
| U7 | SST39SF010 HSB | |
| U8,U21,U23 | 74HC377 | |
| U9 | SST39SF010 MSB | |
| U11 | SST39SF010 LSB | |
| U12 | 74HC32 | Quad 2-input OR |
| U13,U33 | 74HC283 | 4-bit full Adder |
| U15 | SST39SF010 SSD | |
| U17 | AS6C1008 RAM | |
| U20,U22,U24,U27,U34 | 74HC245 | Octal BUS Transceivers, 3-State outputs |
| U30,U31 | 74HC86 | Quad 2-input XOR |
| U32 | 74HC4002 | Dual 4 input NOR gate |
| U36 | ATmega328P | 20MHz, 32kB Flash, 2kB SRAM, 1kB EEPROM, DIP-28 |
| C1,C2 | 22p | |
| C3-C20 | 100n | Unpolarized capacitor, small symbol |
| D1-D3 | LED_small | LED GREEN, 2000mcd, 60° |
| D4-D58,D60-D64,D67-D75 | LED_Small | LED GREEN, 2000mcd, 60° |
| D59 | N | LED GREEN, 2000mcd, 60° |
| D65 | AI | LED YELLOW, 1300mcd, 60° |
| D66 | AO | LED RED, 1300mcd, 60° |
| D76 | BI | LED YELLOW, 1300mcd, 60° |
| D77 | BO | LED RED, 1300mcd, 60° |
| D78 | EO | LED RED, 1300mcd, 60° |
| D79 | CIH | LED YELLOW, 1300mcd, 60° |
| D80 | TO | LED RED, 1300mcd, 60° |
| D81 | COH | LED RED, 1300mcd, 60° |
| D82 | RI | LED YELLOW, 1300mcd, 60° |
| D83 | COL | LED RED, 1300mcd, 60° |
| D84 | CIL | LED YELLOW, 1300mcd, 60° |
| D85 | MIL | LED YELLOW, 1300mcd, 60° |
| D86 | MIH | LED YELLOW, 1300mcd, 60° |
| D87 | TI | LED YELLOW, 1300mcd, 60° |
| D88 | ME | LED WHITE, 2500mcd, 60° |
| D89 | FI | LED YELLOW, 1300mcd, 60° |
| D90 | II | LED YELLOW, 1300mcd, 60° |
| D91 | IC | LED YELLOW, 1300mcd, 60° |
| D92 | CE | LED WHITE, 2500mcd, 60° |
| D93 | EC | LED WHITE, 2500mcd, 60° |
| D94 | ES | LED WHITE, 2500mcd, 60° |
| D95 | C | LED GREEN, 2000mcd, 60° |
| D97 | R | LED BLUE, 1300mcd, 60° |
| D99 | RO | LED RED, 1300mcd, 60° |
| D100 | CLK | LED GREEN, 2000mcd, 60° |
| H1-H4 | M2 | Mounting Hole without connection |
| J1 | UART | |
| R1,R2,R7,R9,R12,R15,R17-R20,R22-R24,R29,RN1 | 470 | 8 resistor network, star topology, bussed resistors, small symbol,Resistor |
| R3 | 10k | |
| R4-R6,R28,R33,RN2-RN11 | 3.3k | 8 resistor network, star topology, bussed resistors, small symbol,Resistor |
| R8,R10,R11,R13,R14,R16,R21,R25-R27,R32 | 2k | Resistor |
| R30 | 1k | Resistor |
| SW1 | RESET | Push button switch, generic, two pins |
| SW2 | SINGLE | Push button switch, generic, two pins |
| SW3 | SELECT | Push button switch, generic, two pins |
| Y1 | 16MHz |