The Arm Cortex-M33 is a 32-bit microcontroller unit (MCU) developed by Arm Holdings, a British semiconductor and software design company. It belongs to the Cortex-M series, which targets embedded and IoT applications. The Cortex-M33 features a dual-core architecture with Armv8-M mainline support, offering enhanced security, performance, and energy efficiency. It is widely used in industrial automation, consumer electronics, automotive systems, and smart devices. Key products based on this architecture include microcontrollers from manufacturers like NXP, STMicroelectronics, and Renesas, serving sectors such as industrial control, healthcare, and connectivity solutions.