The Arm Cortex-M321+ MCU is a microcontroller unit (MCU) based on the ARM Cortex-M architecture, designed by ARM Holdings, a British semiconductor and software design company. ARM Holdings, now part of the multinational conglomerate NVIDIA (following its acquisition in 2020), is headquartered in Cambridge, United Kingdom. The Cortex-M321+ MCU serves industries such as industrial automation, consumer electronics, automotive, and IoT (Internet of Things). It is known for its low power consumption, high performance, and real-time processing capabilities, making it suitable for embedded systems and smart devices. Key products in this series include microcontrollers with integrated peripherals, memory, and connectivity options for diverse applications.