4 layers271.8 × 147.3 mm
2 layers105.4 × 33.7 mm
Ram1M
scefrom/SF682A board featuring the Motorola 68000
- Size
- 105.4 × 33.7 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 7
- Nets
- 46
- Pads
- 139
- Tracks, vias
- 291, 83
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 15 Jul 2025
- Updated
- 20 Sep 2026
Overview
Ram1M is an open-source printed circuit board by scefrom, from the scefrom/SF68 repository on GitHub. It is a 2-layer board of 105.4 × 33.7 mm with 7 parts on 46 nets, routed with 291 tracks and 83 vias.
It is built around the AS6C4008-55PCN and 74HC32D. Its parts include 3 ICs and 1 connector.
Main components
2Parts
7| Qty | Value | Footprint | References |
|---|---|---|---|
| 2 | AS6C4008-55PCN | Package_DIP:DIP-32_W15.24mm | U2, U3 |
| 2 | C_Disc_D3.0mm_W1.6mm_P2.54mm | Capacitor_THT:C_Disc_D3.0mm_W1.6mm_P2.54mm | CB1, CB1 |
| 1 | 74HC32 | Package_DIP:DIP-14_W7.62mm | U1 |
| 1 | C_Disc_D3.0mm_W1.6mm_P7.62mm | Capacitor_THT:C_Disc_D3.0mm_W1.6mm_P7.62mm | CB1 |
| 1 | ramslot | Connector_PCBEdge:pcb_edge_60_P2.54_new | J5 |
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Questions
How big is the Ram1M PCB?
It measures 105.4 × 33.7 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Ram1M use?
7 parts, built around the AS6C4008-55PCN 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 Ram1M KiCad files?
From the scefrom/SF68 repository on GitHub, at the commit this page was made from: the board is ram1M/ram1M.kicad_pcb and its schematic SF68.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Ram1M design in my own project?
Its repository states no licence, so its author keeps all rights: ask scefrom before reusing the design.