2 open source boards using the AT89S51-33PU
Real designs built with the AT89S51-33PU, 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.
Mil Time Clock
sparkletron
79.3 × 101.1 mm104 parts2LMIT0
MCU BOARD
79.3 × 101.1 mm83 parts2LMIT0
The AT89S51-33PU in open source designs
The gallery holds 2 open source boards using the AT89S51-33PU from 1 GitHub repository; a typical one measures about 79.3 × 101.1 mm and carries around 94 components.
100% are two-layer designs, the rest use four layers or more, and 100% carry an open source license.
The most starred is Mil Time Clock by sparkletron.
AT89S51-33PU: common questions
Where can I find a AT89S51-33PU reference design?
Each of the 2 boards on this page is a real design using the AT89S51-33PU. Open one to see how it is wired up, with the full BOM, a render of the layout and links to its KiCad files.
How big is a typical board using the AT89S51-33PU?
The median is 79.3 × 101.1 mm, and 100% are two-layer designs.
What is the most popular open source board using the AT89S51-33PU?
By GitHub stars, Mil Time Clock by sparkletron, with 0 stars.
Can I simulate one of these boards using the AT89S51-33PU 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.