5 open source boards using the AT28C256
Real designs built with the AT28C256, from public GitHub projects: a quick way to see how others power, decouple and connect it. Each board comes with its KiCad files, full parts list and a render — and you can simulate its firmware on HardLabs.
Plusd
alvaroalea
99.1 × 99.1 mm58 parts2LNo license24
AVR/Arduino6502 ACE Board
acwright
335 × 250 mm183 parts2LCERN-OHL-P-2.012
ESP32ZX21
fordp2002
142 × 100 mm125 parts2LBSD-3-Clause9
Mcd
jack-mil
148 × 70.8 mm69 parts2LNo license2
MemExpansion
ja1umi
155 × 114 mm27 parts2LMIT10
The AT28C256 in open source designs
The gallery holds 5 open source boards using the AT28C256 from 5 GitHub repositories; a typical one measures about 148 × 100 mm and carries around 69 components.
100% are two-layer designs, the rest use four layers or more, and 60% carry an open source license.
The most starred is Plusd by alvaroalea.
Parts used alongside the AT28C256
Microcontrollers on boards using the AT28C256
What boards using the AT28C256 are built for
AT28C256: common questions
Where can I find a AT28C256 reference design?
Each of the 5 boards on this page is a real design using the AT28C256. Open one to see how it is wired up, with the full BOM, a render of the layout and links to its KiCad files.
What parts are used alongside the AT28C256?
The AS6C62256, GAL16V8 and GAL22V10 appear in the most repositories here.
Which microcontrollers do boards using the AT28C256 use?
Most are built on AVR/Arduino (1) and ESP32 (1).
How big is a typical board using the AT28C256?
The median is 148 × 100 mm, and 100% are two-layer designs.
What is the most popular open source board using the AT28C256?
By GitHub stars, Plusd by alvaroalea, with 24 stars.
Can I simulate one of these boards using the AT28C256 before building it?
Yes. HardLabs turns a board's netlist and BOM into a working simulation, so you can boot and test firmware against it with no hardware on your desk.