4 layers65 × 30 mm
4 layers57 × 47.8 mm
Sdcard
jpdoane/sdram1SDRAM board and FPGA controller
- Size
- 57 × 47.8 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 14
- Nets
- 50
- Pads
- 120
- Tracks, vias
- 201, 55
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 14 Mar 2024
- Updated
- 17 Aug 2026
Overview
Sdcard is an open-source printed circuit board by jpdoane, from the jpdoane/sdram repository on GitHub. It is a 4-layer board of 57 × 47.8 mm with 14 parts on 50 nets, routed with 201 tracks and 55 vias.
It is built around the W9825G6KH-6. Its parts include 5 capacitors, 4 connectors and 1 IC.
Main components
1README
README.mdsdram
Simple Verilog controller core for the 64MB Alliance AS4C32M16SB or the (pin equivalent) 32MB Winbond W9825G6KH SDRAM modules.
Includes a board design compatible with the ChipKit shield connector on the Arty Z7-20
The primary intent of this project is to support larger ROM memories for NES fpga project, and that will only simple memory operations as needed by the NES core will be initially supported.
Parts
14| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | 0.1u | Capacitor_SMD:C_0805_2012Metric | C2, C3, C4, C5 |
| 2 | Conn_02x08_Odd_Even | Connector_PinHeader_2.54mm:PinHeader_2x08_P2.54mm_Vertical | J1, J2 |
| 1 | 10u | Capacitor_SMD:C_0805_2012Metric | C1 |
| 1 | Conn_02x06_Odd_Even | Connector_PinHeader_2.54mm:PinHeader_2x06_P2.54mm_Vertical | J3 |
| 1 | Conn_Power | Connector_PinHeader_2.54mm:PinHeader_1x08_P2.54mm_Vertical | J4 |
| 1 | W9825G6KH | Package_SO:TSOP-II-54_22.2x10.16mm_P0.8mm | U1 |
The 10 most common of 14 parts.
Questions
How big is the Sdcard PCB?
It measures 57 × 47.8 mm and has 4 copper layers, 1.6 mm thick.
What parts does the Sdcard use?
14 parts, built around the W9825G6KH-6. 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 Sdcard KiCad files?
From the jpdoane/sdram repository on GitHub, at the commit this page was made from: the board is pcb/sdcard.kicad_pcb and its schematic pcb/sdcard.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Sdcard design in my own project?
Its repository states no licence, so its author keeps all rights: ask jpdoane before reusing the design.
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