The Arm Cortex-M401+ MCU is a microcontroller unit developed by Arm Holdings, a British semiconductor and software design company. Arm Holdings is headquartered in Cambridge, United Kingdom, and is a subsidiary of SoftBank Group. The Cortex-M401+ MCU is part of Arm's Cortex-M series, which is widely used in embedded systems and IoT applications. These MCUs serve industries such as industrial automation, consumer electronics, automotive, and healthcare. The Cortex-M401+ is known for its low power consumption, high performance, and real-time capabilities, making it ideal for applications requiring efficient processing and connectivity. Key products in this series include microcontrollers with integrated peripherals, security features, and support for various communication protocols.