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slu4coder/Minimal-64x4-Home-Computer
My DIY TTL home computer with VGA and PS/2 and 4x the processing power of a Commodore C64 or Apple II.
139 parts326
2 layers89 × 51 mm
NEC PCE IFU-30 RAM PCB
rgalland/PC-Engine_IFU-30_Schematics8PC-Engine IFU reverse engineering
- Size
- 89 × 51 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 25
- Nets
- 55
- Pads
- 292
- Tracks, vias
- 0, 0
- Routed
- Not yet
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 21 Oct 2022
- Updated
- 12 Jul 2025
Overview
NEC PCE IFU-30 RAM PCB is an open-source printed circuit board by rgalland, from the rgalland/PC-Engine_IFU-30_Schematics repository on GitHub, published under the GPL-3.0 licence. It is a 2-layer board of 89 × 51 mm with 25 parts on 55 nets.
It is built around the 74HC245D. Its parts include 10 ICs, 8 capacitors and 5 connectors.
Main components
1README
README.mdPC-Engine IFU-30 Reverse engineering
This repository contains:
- kicad files of the main PCB schematics
- kicad files of the RAM mezzanine PCB
- wiki page to explain the circuitry
Potential future development:
- creation of a compatible PCB using SMD component to shrink the board a bit and include RAM on it as well
- add a header for an easy RGB modification
Parts
25| Qty | Value | Footprint | References |
|---|---|---|---|
| 8 | 100n | Capacitor_THT:C_Disc_D3.0mm_W2.0mm_P2.50mm | C71, C73, C74, C75, C76, C77, C78, C79 |
| 8 | MB81C71 | Package_DIP:DIP-22_W7.62mm | IC102, IC103, IC104, IC105, IC106, IC107, IC108, IC109 |
| 2 | 47k | Resistor_THT:R_Array_SIP9 | RA1, RA2 |
| 2 | 74HC245 | Package_DIP:DIP-20_W7.62mm | IC130, IC131 |
| 2 | Conn_02x02_Odd_Even | Connector_PinHeader_2.54mm:PinHeader_2x02_P2.54mm_Vertical | CN1, CN5 |
| 1 | Conn_02x04_Odd_Even | Connector_PinHeader_2.54mm:PinHeader_2x04_P2.54mm_Vertical | CN3 |
| 1 | Conn_02x05_Odd_Even | Connector_PinHeader_2.54mm:PinHeader_2x05_P2.54mm_Vertical | CN4 |
| 1 | Conn_02x08_Odd_Even | Connector_PinHeader_2.54mm:PinHeader_2x08_P2.54mm_Vertical | CN2 |
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Questions
How big is the NEC PCE IFU-30 RAM PCB PCB?
It measures 89 × 51 mm and has 2 copper layers, 1.6 mm thick.
What parts does the NEC PCE IFU-30 RAM PCB use?
25 parts, built around the 74HC245D. 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 NEC PCE IFU-30 RAM PCB KiCad files?
From the rgalland/PC-Engine_IFU-30_Schematics repository on GitHub, at the commit this page was made from: the board is NEC-PCE-IFU-30_RAM_PCB/NEC-PCE-IFU-30_RAM_PCB.kicad_pcb and its schematic NEC-PCE-IFU-30_MAIN_PCB/ADPCM.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the NEC PCE IFU-30 RAM PCB design in my own project?
Its repository publishes it under the GPL-3.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).