4 layers304.5 × 217.2 mm
Latest Full Backplane
Trilobyte-CPU/8-bit-computer
A DIY 8-bit computer built mostly with discrete logic chips
478 parts2
4 layers43.2 × 89.2 mm
A DIY 8-bit computer built mostly with discrete logic chips
- Size
- 43.2 × 89.2 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 37
- Nets
- 102
- Pads
- 305
- Tracks, vias
- 879, 113
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 6 (file 20211014)
- Created
- 20 Apr 2021
- Updated
- 9 Nov 2022
Overview
UART is an open-source printed circuit board by Trilobyte-CPU, from the Trilobyte-CPU/8-bit-computer repository on GitHub. It is a 4-layer board of 43.2 × 89.2 mm with 37 parts on 102 nets, routed with 879 tracks and 113 vias.
It is built around the 74LS193P-E, 74LS00SC and 74LS165PC, with the 74HC164 and 74LS04PC among its other parts. Its parts include 16 ICs, 8 resistors, 8 diodes, 4 connectors and 1 crystal. It belongs with the interfaces and adapters boards of this library.
Main components
5
74LS193P-E
DIP-1674LS Programmable divide ratio、Reset function、Cascade counter、Synchronous counting、Multi-mode counting DIP-16 Counters, Dividers ROHSRenesas ElectronicsCounters, Dividers
74LS00SC
-0℃~+70℃ 15ns@5V,50pF 2 2.7V 2V 4 4.75V~5.25V 400uA 500mV 74LS 800mV 8mA NAND Gate - Logic Gates ROHSTexas InstrumentsLogic Gates74LS165PC
DIP-160.4mA 0℃~+70℃ 105mW 35MHz 4.75V~5.25V 47ns@5V,50pF 8 8mA Asynchronous parallel load function Complementary Parallel-to-Serial DIP-16 Shift RegistersTexas InstrumentsShift Registers
74HC164
SOP-140℃~+70℃ 1 24ns@5V,16pF 2V~6V 74HC 8 Serial-to-Parallel SOP-14 Shift Registers ROHSGRShift Registers
74LS04PC
PDIP-140℃~+70℃ 4.75V~5.25V 6 6.6mA 74LS PDIP-14 InvertersonsemiInverters
Parts
37| Qty | Value | Footprint | References |
|---|---|---|---|
| 8 | 1kohm | Resistor_SMD:R_0805_2012Metric | R1, R2, R3, R4, R5, R6, R7, R8 |
| 8 | LED | LED_SMD:LED_1206_3216Metric | D1, D2, D3, D4, D5, D6, D7, D8 |
| 4 | 74LS193 | Package_SO:TSSOP-16_4.4x5mm_P0.65mm | U1, U2, U3, U4 |
| 4 | 74LS224 | Package_DIP:DIP-16_W7.62mm | U12, U13, U15, U16 |
| 2 | 74LS00 | Package_SO:TSSOP-14_4.4x5mm_P0.65mm | U6, U7 |
| 2 | 74LS08 | Package_SO:TSSOP-14_4.4x5mm_P0.65mm | U5, U14 |
| 2 | 74LS165 | Package_SO:TSSOP-16_4.4x5mm_P0.65mm | U10, U11 |
| 2 | Conn_01x02 | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J3, J4 |
| 1 | 74HC164 | Package_SO:TSSOP-14_4.4x5mm_P0.65mm | U9 |
| 1 | 74LS04 | Package_SO:TSSOP-14_4.4x5mm_P0.65mm | U8 |
| 1 | Conn_01x06 | Connector_PinHeader_2.54mm:PinHeader_1x06_P2.54mm_Vertical | J1 |
| 1 | Conn_01x15 | Connector_PinHeader_2.54mm:PinHeader_1x15_P2.54mm_Vertical | J2 |
| 1 | Crystal_GND24 | Stephenv6:CFPS-72 SMD Clock | Y1 |
Questions
How big is the UART PCB?
It measures 43.2 × 89.2 mm and has 4 copper layers, 1.6 mm thick.
What parts does the UART use?
37 parts, built around the 74LS193P-E, 74LS00SC, 74LS165PC and 74HC164. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the UART KiCad files?
From the Trilobyte-CPU/8-bit-computer repository on GitHub, at the commit this page was made from: the board is PCBs/99_IN PROGRESS/IO-UART/UART-backups/UART-2022-02-07_100136/UART.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the UART design in my own project?
Its repository states no licence, so its author keeps all rights: ask Trilobyte-CPU before reusing the design.
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