The Arm Cortex-M31+ MCU is a microcontroller unit developed by Arm Holdings, a British semiconductor and software design company. It is part of the Cortex-M series, which is widely used in embedded systems for industrial, automotive, and IoT applications. The Cortex-M31+ offers enhanced security features, low power consumption, and high performance, making it suitable for applications requiring robust and efficient processing. Arm's MCUs are utilized by various manufacturers globally to create devices for automation, consumer electronics, and smart infrastructure.