4 layers160 × 100 mm
2 layers111.8 × 108 mm
8031-sys06
gmalpartida/8051-dev- Size
- 111.8 × 108 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 34
- Nets
- 94
- Pads
- 331
- Tracks, vias
- 1,182, 10
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 13 Oct 2025
- Updated
- 4 Nov 2026
Overview
8031-sys06 is an open-source printed circuit board by gmalpartida, from the gmalpartida/8051-dev repository on GitHub. It is a 2-layer board of 111.8 × 108 mm with 34 parts on 94 nets, routed with 1,182 tracks and 10 vias.
It is built around the 74LS373SC, 74LS00SC and MAX233EPP. Its parts include 9 ICs, 9 connectors, 3 capacitors, 2 resistors and 2 switches.
Main components
3
74LS373SC
--55℃~+125℃ 1 2.6mA 24mA 38ns@5V,150pF 4.75V~5.25V 74LS 8 Output enable Tri-State - Buffers, Drivers, Receivers, Transceivers ROHSTexas InstrumentsBuffers, Drivers, Receivers, Transceivers
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 Gates
MAX233EPP
DIP-20DIP-20 RS232 ICs ROHSMaxim Integrated (Analog Devices)RS232 ICs
Parts
34| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | MountingHole_3.2mm_M3 | MountingHole:MountingHole_3.2mm_M3 | REF1, REF2, REF3, REF4 |
| 3 | MountingHole_6.4mm_M6 | MountingHole:MountingHole_6.4mm_M6 | REF5, REF6, REF7 |
| 2 | 30pf | Capacitor_THT:C_Disc_D3.0mm_W2.0mm_P2.50mm | C1, C2 |
| 2 | 62C256 | Package_DIP:DIP-28_W15.24mm_LongPads | U6, U7 |
| 2 | AT28C16 | Package_DIP:DIP-24_W15.24mm_LongPads | U3, U4 |
| 1 | 10uf | Capacitor_THT:CP_Radial_D5.0mm_P2.50mm | C3 |
| 1 | 11.059MHz | Crystal:Crystal_HC52-6mm_Vertical | Y1 |
| 1 | 220 | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R2 |
| 1 | 5V Bus | Connector_PinHeader_2.54mm:PinHeader_1x08_P2.54mm_Vertical | J10 |
| 1 | 74LS00 | Package_DIP:DIP-16_W7.62mm_LongPads | U8 |
| 1 | 74LS138 | Package_DIP:DIP-16_W7.62mm_LongPads | U5 |
| 1 | 74LS373 | Package_DIP:DIP-20_W7.62mm_LongPads | U2 |
| 1 | 8.2K | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R1 |
| 1 | 8031 | Package_DIP:DIP-40_W15.24mm_LongPads | U1 |
| 1 | Address Bus | Connector_PinHeader_2.54mm:PinHeader_1x16_P2.54mm_Vertical | J4 |
| 1 | CNTL Bus | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J9 |
| 1 | Data Bus | Connector_PinHeader_2.54mm:PinHeader_1x08_P2.54mm_Vertical | J3 |
| 1 | GND Bus | Connector_PinHeader_2.54mm:PinHeader_1x08_P2.54mm_Vertical | J6 |
| 1 | LED | LED_THT:LED_D3.0mm | D1 |
| 1 | MAX233 | Package_DIP:DIP-20_W7.62mm_LongPads | U10 |
| 1 | P1 Bus | Connector_PinHeader_2.54mm:PinHeader_1x08_P2.54mm_Vertical | J8 |
| 1 | P3 Bus | Connector_PinHeader_2.54mm:PinHeader_1x08_P2.54mm_Vertical | J7 |
| 1 | RS232 | Connector_Dsub:DSUB-9_Male_Horizontal_P2.77x2.54mm_EdgePinOffset9.40mm | J1 |
| 1 | Reset | digikey-footprints:Switch_Tactile_THT_6x6mm | SW5 |
| 1 | SW_DIP_x04 | Package_DIP:DIP-8_W7.62mm_LongPads | SW4 |
| 1 | Switches | Connector_PinHeader_2.54mm:PinHeader_1x15_P2.54mm_Vertical | J2 |
Questions
How big is the 8031-sys06 PCB?
It measures 111.8 × 108 mm and has 2 copper layers, 1.6 mm thick.
What parts does the 8031-sys06 use?
34 parts, built around the 74LS373SC, 74LS00SC and MAX233EPP. 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 8031-sys06 KiCad files?
From the gmalpartida/8051-dev repository on GitHub, at the commit this page was made from: the board is Rudley Development Board/0002-Designing_a_PCB_Using_KiCad_with_Auto_Routing_Support/8031-sys06/8031-sys06.kicad_pcb and its schematic G51 Development Board/g51-dev-board/g51-dev-board.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the 8031-sys06 design in my own project?
Its repository states no licence, so its author keeps all rights: ask gmalpartida before reusing the design.
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