Mini8085
About the Mini8085 PCB
Mini8085 is an open source PCB design by schenkmi, published on GitHub. It is a 2-layer board measuring 100 × 80 mm, with 44 components from 30 distinct parts.
Other key parts include the 80C85A, 82C51A, 27C128, 62256 and GAL16V8. By type, the board carries 15 capacitors, 8 ICs, 5 connectors, 3 jumpers, 3 resistors and 2 diodes.
From the project
Minimalistic 8085 System
Main components on the Mini8085
Mini8085 bill of materials (BOM)
44 components, 30 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 80C85A | IC_DIP40_600 | U1 |
| 1 | 82C51A | IC_DIP28_600 | U2 |
| 1 | 27C128 | IC_DIP28_600 | U3 |
| 1 | 62256 | IC_DIP28_600 | U4 |
| 1 | GAL16V8 | IC_DIP20_300 | U5 |
| 1 | 74HC573 | IC_DIP20_300 | U6 |
| 1 | MAX232A | IC_DIP16_300 | U7 |
| 1 | DS1210 | IC_DIP8_300 | U8 |
| 1 | 6.144MHz | Crystal_HC-49U_Vert | Y1 |
| 1 | POWER | Conn_Power_Jack_Circular_Pads | P1 |
| 1 | SIO | Conn_Pin_Header_3x1_2.54mm | P2 |
| 1 | SERIAL | Conn_Dsub_DE9M | P3 |
| 1 | EXTENSION | Conn_Pin_Header_20x2_2.54mm | P4 |
| 1 | VBAT | Conn_Friction_Lock_2P_2.54mm | P5 |
| 4 | CONN_1 | Hole_3mm | HOLE1, HOLE2, HOLE3, HOLE4 |
| 1 | ROM_1 | Conn_Pin_Header_3x1_2.54mm | JP1 |
| 1 | ROM_27 | Conn_Pin_Header_3x1_2.54mm | JP2 |
| 1 | CLK | Conn_Pin_Header_3x1_2.54mm | JP3 |
| 2 | 4.7k | Conn_SIL6 | RR1, RR2 |
| 1 | RESET | Switch_Tactile_6mm_Right | SW1 |
Show 10 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 1N4148 | Diode_762 | D1 |
| 1 | PWR | LED_Dialight_566-0206F | D2 |
| 6 | 0.1uF | Cap_Cer_508 | C1, C2, C3, C4, C5, C6 |
| 5 | 0.1uF | Cap_Pol_508_3 | C7, C8, C9, C10, C11 |
| 1 | 1uF | Cap_Pol_508_3 | C12 |
| 1 | 10uF | Cap_Pol_508_3 | C13 |
| 2 | 33pF | Cap_Cer_508 | C14, C15 |
| 1 | 33 | Res_762 | R1 |
| 1 | 470 | Res_762 | R2 |
| 1 | 100k | Res_762 | R3 |
Mini8085 design files
The KiCad project lives in the schenkmi/Mini8085 repository on GitHub; these links point at the commit this page was built from.
- LayoutKiCad/Mini8085.kicad_pcb
Mini8085: common questions
How big is the Mini8085 PCB?
The Mini8085 measures 100 × 80 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Mini8085?
44 components, from 30 distinct parts. The full bill of materials is listed on this page.
Where can I download the Mini8085 design files?
From the schenkmi/Mini8085 repository on GitHub, which has the KiCad layout; the links under Design files point to each one.
Can I use the Mini8085 design in my own project?
The repository has no license, so all rights stay with schenkmi. Use it as a reference, and ask the author before reusing the design.