The Arm Cortex-M12+ MCU is a microcontroller unit (MCU) series developed by Arm Holdings, a British semiconductor and software design company. Arm Holdings is headquartered in the United Kingdom and is a subsidiary of SoftBank Group. The Cortex-M12+ MCU is part of Arm's Cortex-M family, designed for embedded applications in industries such as industrial automation, automotive, consumer electronics, and IoT. These MCUs offer high performance, energy efficiency, and advanced security features, making them suitable for real-time control systems and smart devices. Key products in this series include microcontrollers with integrated peripherals, memory, and connectivity options.