8 layers140 × 314.2 mm

Boards in 1 GitHub repository, designed in KiCad, that use the PCAL6524EVJ by NXP Semiconductors (-40℃~+85℃ 24 25mA 25mA 800mV~3.6V I2C、SMBus Interrupt Output Push-Pull、Open Drain Reset function、Cascading and address extension、Input anti-jitter、Built-in LED driver、IO level configurable VFBGA-36(2.6x2.6) I/O Expanders ROHS). See how each wires it, with its parts, size, README and files; the PCAL6524EVJ’s symbol, footprint and pinout are on its own page.
