4 layers146.7 × 93.9 mm

Boards in 1 GitHub repository, designed in KiCad, that use the ATSAMD21J17D-MU by Microchip Technology (-40℃~+85℃ 1.62V~3.63V 10bit 128KB 12bit 16KB 32 Bit 48MHz 52 ARM Cortex-M0+ Built-in FLASH Power-on reset (POR)、Undervoltage detection (BOR/LVD/LVR/LVI)、Watchdog reset、Built-in general-purpose timer、Hardware CRC、Programmable watchdog、Calendar function、Touch function QFN-64-EP(9x9) Microcontrollers (MCU/MPU/SOC) ROHS). See how each wires it, with its parts, size, README and files; the ATSAMD21J17D-MU’s symbol, footprint and pinout are on its own page.
