2 layers124 × 113 mm
2 layers124 × 70 mm
Memory board
edatki/e74-cpuA custom CPU implemented in 74-series logic
- Size
- 124 × 70 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 19
- Nets
- 84
- Pads
- 250
- Tracks, vias
- 915, 119
- Pours
- 5
- Routed
- Yes
- KiCad
- KiCad 7 (file 20221018)
- Created
- 12 Jun 2023
- Updated
- 12 Jan 2024
Overview
Memory board is an open-source printed circuit board by edatki, from the edatki/e74-cpu repository on GitHub. It is a 2-layer board of 124 × 70 mm with 19 parts on 84 nets, routed with 915 tracks and 119 vias.
It is built around the 74LS00SC. Its parts include 6 resistors, 3 ICs, 3 diodes and 2 connectors. It belongs with the AVR (ATmega, ATtiny) boards of this library.
Main components
1Parts
19| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | MountingHole | MountingHole:MountingHole_3.5mm | H1, H2, H3, H4 |
| 3 | 1K | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R1, R5, R6 |
| 3 | 330R | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R2, R3, R4 |
| 3 | LED | LED_THT:LED_D2.0mm_W4.8mm_H2.5mm_FlatTop | D1, D2, D3 |
| 2 | Conn_02x32_Odd_Even | Connector_IDC:IDC-Header_2x32_P2.54mm_Vertical | J1, J2 |
| 1 | 27C512 | Package_DIP:DIP-28_W15.24mm_Socket | U2 |
| 1 | 74LS00 | Package_DIP:DIP-14_W7.62mm_Socket | U3 |
| 1 | Arduino_Nano_v3.x | Module:Arduino_Nano | A1 |
| 1 | CY62256-70PC | Package_DIP:DIP-28_W15.24mm_Socket | U1 |
Questions
How big is the Memory board PCB?
It measures 124 × 70 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Memory board use?
19 parts, built around the 74LS00SC. 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 Memory board KiCad files?
From the edatki/e74-cpu repository on GitHub, at the commit this page was made from: the board is hardware/Memory_board/Memory_board.kicad_pcb and its schematic hardware/Control_board/Control_board.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Memory board design in my own project?
Its repository states no licence, so its author keeps all rights: ask edatki before reusing the design.
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