Memory board
About the Memory board
Memory board is an open source AVR/Arduino PCB design by edatki, published on GitHub. It is a 2-layer board measuring 124 × 70 mm, with 15 components from 8 distinct parts.
Its main chip is the Arduino_Nano_v3.x, from the AVR/Arduino family. Other key parts include the CY62256-70PC, 27C512 and 74LS00. By type, the board carries 6 resistors, 3 ICs, 3 diodes, 2 connectors and 1 module.
From the project
A custom CPU implemented in 74-series logic
Main components on the Memory board
Memory board bill of materials (BOM)
15 components, 8 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | CY62256-70PC | DIP-28_W15.24mm_Socket | U1 |
| 1 | 27C512 | DIP-28_W15.24mm_Socket | U2 |
| 1 | 74LS00 | DIP-14_W7.62mm_Socket | U3 |
| 1 | Arduino_Nano_v3.x | Arduino_Nano | A1 |
| 2 | Conn_02x32_Odd_Even | IDC-Header_2x32_P2.54mm_Vertical | J1, J2 |
| 3 | LED | LED_D2.0mm_W4.8mm_H2.5mm_FlatTop | D1, D2, D3 |
| 3 | 1K | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R1, R5, R6 |
| 3 | 330R | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R2, R3, R4 |
Memory board design files
The KiCad project lives in the edatki/e74-cpu repository on GitHub; these links point at the commit this page was built from.
Memory board: common questions
What microcontroller does the Memory board use?
The Memory board is built around the Arduino_Nano_v3.x, from the AVR/Arduino family.
How big is the Memory board?
The Memory board measures 124 × 70 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Memory board?
15 components, from 8 distinct parts. The full bill of materials is listed on this page.
Where can I download the Memory board design files?
From the edatki/e74-cpu repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the Memory board design in my own project?
The repository has no license, so all rights stay with edatki. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the Memory board 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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