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Hx8k sram16-extension

maikmerten·hx8k-sram16-extension·kicad-project/hx8k-sram16-extension.kicad_pcb

Hx8k sram16-extension PCB layout, top view — open source board by maikmerten
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About the Hx8k sram16-extension PCB

Hx8k sram16-extension is an open source PCB design by maikmerten, published on GitHub under the MIT license. It is a 4-layer board measuring 32 × 54.3 mm, with 24 components from 11 distinct parts.

Other key parts include the fpga_shield2_IS61LV25616 and W25Q32JVSS. By type, the board carries 11 resistors, 5 connectors, 3 capacitors, 2 ICs, 2 diodes and 1 switch.

It belongs with the dev boards & breakouts designs in this gallery.

From the project

A PCB with 4 Mbit of SRAM, two LEDs, a button, SPI-Flash, SPI-connectors, and a single-row pmod-compatible connector for the Lattice HX8K Breakout Board

The board in its current state is difficult to operate in a stable manner. While signals to the SRAM-chip appear to be of decent quality, I've yet to achieve stable operation over extended periods of operation. This might be a matter of my SRAM-controller design within the FPGA, or an issue with the board design available here. Please be aware of this before considering deploying this design in your projects.

Hx8k sram16-extension, from the project README
From the project README

Main components on the Hx8k sram16-extension

fpga_shield2_IS61LV25616W25Q32JVSS

Hx8k sram16-extension bill of materials (BOM)

24 components, 11 distinct parts.

QtyPartRefs
1
fpga_shield2_IS61LV25616
U1
1
W25Q32JVSS
U2
2
Conn_01x06_Female
J1, J2
2
Conn_02x20_Odd_Even
J3, J4
1
Conn_01x06_Female
J5
1
SW_Push
SW1
2
LED
D1, D2
3
100nF
C1, C2, C3
8
1k
R1, R2, R3, R4, R5, R6, R7, R8
1
20k
R9
2
510
R10, R11

Hx8k sram16-extension design files

The KiCad project lives in the maikmerten/hx8k-sram16-extension repository on GitHub; these links point at the commit this page was built from.

Hx8k sram16-extension: common questions

How big is the Hx8k sram16-extension PCB?

The Hx8k sram16-extension measures 32 × 54.3 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the Hx8k sram16-extension?

24 components, from 11 distinct parts. The full bill of materials is listed on this page.

Where can I download the Hx8k sram16-extension design files?

From the maikmerten/hx8k-sram16-extension repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the Hx8k sram16-extension design in my own project?

Yes, under the terms of its MIT license, which maikmerten chose for the repository.

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