The Arm Cortex-M73+ MCU is a microcontroller unit (MCU) developed by Arm Holdings, a British semiconductor and software design company. It belongs to the Cortex-M series, which is widely used in embedded systems for industrial, automotive, and IoT applications. The Cortex-M73+ is an enhanced version of the Cortex-M7, offering improved performance, energy efficiency, and security features. It is designed for real-time processing in applications such as industrial automation, smart devices, and edge computing. Arm Holdings provides the IP (intellectual property) for these MCUs, which are then manufactured by various semiconductor companies worldwide.