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 layers83.3 × 43.2 mm
Control unit
Trilobyte-CPU/8-bit-computer2A DIY 8-bit computer built mostly with discrete logic chips
- Size
- 83.3 × 43.2 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 41
- Nets
- 89
- Pads
- 268
- Tracks, vias
- 980, 133
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 6 (file 20211014)
- Created
- 20 Apr 2021
- Updated
- 9 Nov 2022
Overview
Control unit 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 83.3 × 43.2 mm with 41 parts on 89 nets, routed with 980 tracks and 133 vias.
It is built around the 74HC02, 74HC08D and 74HC04D, with the 74HC32D, CD4072BE and 74HC154D among its other parts. Its parts include 15 resistors, 14 ICs, 10 diodes and 2 connectors.
Main components
774HC02
-- Logic Gates ROHSonsemiLogic Gates
74HC08D
SOP-14-40℃~+125℃ 1.5V~4.2V 1.9V、3.7V、5.2V 100mV、400mV 2 27ns@4.5V,50pF 2V~6V 2uA 4 5.2mA 5.2mA 500mV~1.8V 74HC Series AND Gate SOIC-14 Logic Gates ROHSNexperiaLogic Gates74HC04D
SOP-14-40℃~+125℃ 1 1.5V~4.2V 1.9V、3.7V、5.2V 100mV、400mV、400mV 14ns@6V,50pF 2V~6V 2uA 5.2mA 5.2mA 500mV~1.8V 6 74HC SOIC-14 Inverters ROHSNexperiaInverters74HC32D
SOP-14-40℃~+125℃ 1.5V~4.2V 1.9V、4.4V、5.9V 100mV、400mV、400mV 2 2V~6V 2uA 4 5.2mA 5.2mA 500mV~1.8V 6ns@6V,50pF 74HC Series OR Gate SOIC-14 Logic Gates ROHSNexperiaLogic Gates
CD4072BE
DIP-14-55℃~+125℃ 1.5V~4V 1uA 2 3.4mA 3.4mA 3.5V~11V 3V~18V 4 4.95V、9.95V、14.95V 4000B Series 50mV 90ns@15V,50pF OR Gate DIP-14 Logic Gates ROHSTexas InstrumentsLogic Gates
74HC154D
-UncategorisedNexperia74HC86D
SO-14-40℃~+125℃ 1.5V~4.2V 20ns@6V,50pF 2V~6V 2uA 4 5.2mA 5.2mA 500mV~1.8V 74HC Series XOR Gate SOIC-14 Logic Gates ROHSNexperiaLogic Gates
Parts
41| Qty | Value | Footprint | References |
|---|---|---|---|
| 15 | R_US | Resistor_SMD:R_0805_2012Metric | R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R11, R12, R13, R14, R15 |
| 10 | LED | LED_SMD:LED_0805_2012Metric | D1, D2, D3, D4, D5, D6, D7, D8, D9, D10 |
| 3 | 74HC02 | Package_SO:TSSOP-14_4.4x5mm_P0.65mm | U2, U5, U9 |
| 3 | 74HC08 | Package_SO:TSSOP-14_4.4x5mm_P0.65mm | U3, U6, U14 |
| 2 | 74HC04 | Package_SO:TSSOP-14_4.4x5mm_P0.65mm | U1, U4 |
| 2 | 74HC32 | Package_SO:TSSOP-14_4.4x5mm_P0.65mm | U7, U12 |
| 2 | CD4072 | Package_SO:SOIC-14_3.9x8.7mm_P1.27mm | U10, U11 |
| 1 | 74HC154 | Package_SO:SOIC-24W_7.5x15.4mm_P1.27mm | U13 |
| 1 | 74HC86 | Package_SO:TSSOP-14_4.4x5mm_P0.65mm | U8 |
| 1 | Conn_01x04 | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J4 |
| 1 | Conn_01x08 | Connector_PinHeader_2.54mm:PinHeader_1x08_P2.54mm_Vertical | J3 |
Questions
How big is the Control unit PCB?
It measures 83.3 × 43.2 mm and has 4 copper layers, 1.6 mm thick.
What parts does the Control unit use?
41 parts, built around the 74HC02, 74HC08D, 74HC04D and 74HC32D. 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 Control unit KiCad files?
From the Trilobyte-CPU/8-bit-computer repository on GitHub, at the commit this page was made from: the board is PCBs/03_MODULES/CPU-ALU/ALU-Conditional-Jumps/control-unit.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Control unit 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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