The NuMaker-ML56SD development board, based on the ML56SD1AE MCU, integrates Arduino UNO headers, full pin extensions, flexible power options, and an ammeter connector for power monitoring. It includes a TN LCD daughter board for 8×28 COM/SEG display and capacitive touch key sensing, enabling fast evaluation of ML56 features. A detachable Nu-Link2-Me debugger/programmer with SWD, online/offline ICP, VCOM, and 16 Mbit SPI Flash completes the platform for prototyping and production.