The Arm Cortex-M390+ MCU is a microcontroller unit (MCU) developed by Arm Holdings, a British semiconductor and software design company. Arm specializes in providing processor architectures and technologies for a wide range of industries, including automotive, industrial automation, consumer electronics, and IoT (Internet of Things). The Cortex-M390+ MCU is part of Arm's Cortex-M series, known for its high performance, energy efficiency, and real-time capabilities, making it ideal for embedded systems and smart devices. While specific details about the Cortex-M390+ are limited, Arm's MCUs are widely used in applications requiring low power consumption, reliability, and advanced processing features.