The Arm Cortex-M404+ MCU is a microcontroller unit based on the ARM Cortex-M4 architecture, developed by ARM Holdings, a British semiconductor and software design company. ARM Holdings, now part of the SoftBank Group, is headquartered in Cambridge, UK, and specializes in creating energy-efficient processor designs widely used in embedded systems. The Cortex-M404+ MCU is designed for industrial applications, including automation, IoT, robotics, and consumer electronics. It features high-performance processing, low power consumption, and real-time capabilities, making it suitable for applications requiring precise control and connectivity. ARM's Cortex-M series is a leading choice in the embedded industry, with products licensed to various semiconductor manufacturers globally.