MDA80486SBC Final
About the MDA80486SBC Final PCB
MDA80486SBC Final is an open source AVR/Arduino PCB design by mattheeewahn, published on GitHub under the GPL-3.0 license. It is a 4-layer board measuring 150 × 150 mm, with 123 components from 48 distinct parts.
Its main chip is the ATmega128L-8A, from the AVR/Arduino family. Other key parts include the 486Socket, XC2S100TQ144, AMS1117, 74LS245 and 8254. By type, the board carries 42 capacitors, 29 resistors, 23 ICs, 22 connectors, 3 crystals and 2 switches.
From the project
크기가 너무 커서 압축파일로 올립니다. PCB로 가면 아웃풋이 있고 아웃풋에 가면 homebrew486Bcu압축파일이 있는데 그대로 캐드나 온라인 거버 뷰어에 올리시면 볼수 있습니다
Main components on the MDA80486SBC Final
MDA80486SBC Final bill of materials (BOM)
123 components, 48 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 486Socket | 486Socket | U1 |
| 1 | XC2S100TQ144 | TQFP-144_20x20mm_P0.5mm | U2 |
| 2 | AMS1117 | SOT-223-3_TabPin2 | U3, U4 |
| 6 | 74LS245 | SOP-20_7.5x12.8mm_P1.27mm | U5, U6, U7, U8, U19, U20 |
| 1 | 8254 | DIP-24_W15.24mm | U9 |
| 1 | 8259A-2 | PLCC-28_THT-Socket | U10 |
| 8 | HM628512 | SOP-32_11.305x20.495mm_P1.27mm | U11, U12, U13, U14, U15, U16, U17, U18 |
| 1 | W29C020 | DIP-32_W15.24mm | U21 |
| 1 | ATmega128L-8A | TQFP-64_14x14mm_P0.8mm | U22 |
| 1 | 74LS573 | SOP-20_7.5x12.8mm_P1.27mm | U23 |
| 1 | TXC-7C | Oscillator_SMD_SeikoEpson_SG8002CA-4Pin_7.0x5.0mm_HandSoldering | Y1 |
| 1 | GTXO-14T | Oscillator_DIP-14 | Y2 |
| 1 | 16MHz | Crystal_HC49-4H_Vertical | Y3 |
| 2 | Bus_ISA_16bit | ISA16 | J1, J2 |
| 1 | ATX-20 | Molex_Mini-Fit_Jr_5566-20A_2x10_P4.20mm_Vertical | J3 |
| 1 | AVR ISP | PinHeader_2x03_P2.54mm_Vertical | J4 |
| 1 | FPGA JTAG | PinHeader_1x06_P2.54mm_Vertical | J5 |
| 1 | Enable load | PinHeader_1x02_P2.54mm_Vertical | J6 |
| 1 | RAM cacheable | PinHeader_1x02_P2.54mm_Vertical | J7 |
| 1 | ROM cacheable | PinHeader_1x02_P2.54mm_Vertical | J8 |
Show 28 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | CLKMUL SET | PinHeader_1x03_P2.54mm_Vertical | J9 |
| 1 | ISA_DEBUG | PinHeader_1x10_P2.54mm_Vertical | J10 |
| 1 | PEN | PinHeader_1x01_P2.54mm_Vertical | J11 |
| 1 | MEM_WR_RD_J | PinHeader_1x02_P2.54mm_Vertical | J12 |
| 1 | KB | Connector_Mini-DIN_Female_6Pin_2rows | J13 |
| 1 | ATMegaSpare | PinHeader_1x06_P2.54mm_Vertical | J14 |
| 1 | PC SPK | PinHeader_1x04_P2.54mm_Vertical | J15 |
| 1 | ATUART | PinHeader_1x03_P2.54mm_Vertical | J16 |
| 1 | IOout | PinHeader_1x06_P2.54mm_Vertical | J17 |
| 1 | Reset ext | PinHeader_1x02_P2.54mm_Vertical | J18 |
| 4 | Conn_01x02_Pin | PinHeader_1x02_P2.54mm_Vertical | J19, J20, J21, J22 |
| 1 | SW_SPDT | PinHeader_1x03_P2.54mm_Vertical | SW1 |
| 1 | Reset btn | SW_PUSH_6mm | SW2 |
| 1 | PWR_LED | LED_D4.0mm | D1 |
| 1 | D7_LED | LED_D4.0mm | D2 |
| 2 | 22u | CP_Radial_D5.0mm_P2.50mm | C1, C2 |
| 34 | 0.1u | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C3, C4, C7, C8, C9, C10, C11, C12 +26 |
| 2 | 22p | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C5, C6 |
| 4 | 10u | CP_Radial_D5.0mm_P2.50mm | C36, C37, C38, C39 |
| 4 | 4.7K | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R1, R2, R3, R4 |
| 3 | 120 | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R5, R6, R7 |
| 1 | 200 | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R8 |
| 6 | 10K | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R9, R11, R12, R13, R27, R28 |
| 1 | 33 | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R10 |
| 10 | 1K | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R14, R15, R16, R19, R20, R21, R22, R23 +2 |
| 2 | 300 | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R17, R18 |
| 1 | 100 | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R26 |
| 1 | 10 | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R29 |
MDA80486SBC Final design files
The KiCad project lives in the mattheeewahn/MDA80486SBC_Final repository on GitHub; these links point at the commit this page was built from.
- Layouthomebrew_486.kicad_pcb
- Schematichomebrew_486.kicad_sch
MDA80486SBC Final: common questions
What microcontroller does the MDA80486SBC Final use?
The MDA80486SBC Final is built around the ATmega128L-8A, from the AVR/Arduino family.
How big is the MDA80486SBC Final PCB?
The MDA80486SBC Final measures 150 × 150 mm, has 4 copper layers and is 1.6 mm thick.
How many components are on the MDA80486SBC Final?
123 components, from 48 distinct parts. The full bill of materials is listed on this page.
Where can I download the MDA80486SBC Final design files?
From the mattheeewahn/MDA80486SBC_Final repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the MDA80486SBC Final design in my own project?
Yes, under the terms of its GPL-3.0 license, which mattheeewahn chose for the repository.
Can I test firmware for the MDA80486SBC Final without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug AVR/Arduino firmware against it before you order a PCB.
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