brief introduction: The 32-bit microcontroller refers to its data bus width of 32 bits. The 32-bit instruction set is the instruction that runs 32 bits of data, which means that the control unit can run 32 bits of data at a time.Microcontroller (MicroController) can be referred to as MCU or μC, also known as the Single Chip MicroController (Single Chip MicroController), ROM, RAM, CPU, I/O set in the same Chip, for different applications to do different combinations of control.