The Arm Cortex-M4 is a 32-bit RISC processor core developed by Arm Holdings, a British semiconductor and software design company. It is part of the Cortex-M series, specifically optimized for embedded applications requiring high performance and low power consumption. The Cortex-M4 core is widely used in industries such as automotive, industrial automation, consumer electronics, and IoT devices. Key features include a floating-point unit (FPU), DSP capabilities, and enhanced efficiency for real-time control applications. Major products incorporating this core include microcontrollers (MCUs) from manufacturers like STMicroelectronics, NXP, and Texas Instruments.