The Arm Cortex-M91+ MCU is a microcontroller unit developed by Arm Holdings, a British semiconductor and software design company. It belongs to the Cortex-M series, known for its high performance, security, and efficiency in embedded systems. The Cortex-M91+ serves industries such as industrial automation, IoT, automotive, and consumer electronics, offering features like AI acceleration, enhanced security (e.g., TrustZone), and real-time processing capabilities. Arm's products are widely used by global manufacturers to create energy-efficient and scalable solutions.