The Arm Cortex-M311+ MCU is a microcontroller unit (MCU) developed by Arm Holdings, a British semiconductor and software design company. Arm Holdings, headquartered in Cambridge, UK, is a subsidiary of SoftBank Group and specializes in energy-efficient processor designs. The Cortex-M311+ MCU is part of Arm's Cortex-M series, targeting embedded systems and IoT applications. It serves industries such as industrial automation, consumer electronics, automotive, and smart devices. Key features include low power consumption, real-time performance, and scalability, making it ideal for compact, cost-sensitive applications. Arm licenses its designs to manufacturers worldwide, enabling widespread adoption in diverse hardware ecosystems.