微控制器(MCU),不是完成某一个逻辑功能的芯片,而是把一个计算机系统集成到一个芯片上,具体说,就是把中央处理器(CPU)、随机存储器RAM、只读存储器ROM、中断系统、定时器/计数器以及输入/输出口(I/O)电路等主要部件,集成在一块芯片上,从而组成一个小型的计算机系统。以微控制器为核心构成的电路称为微控制器电路。 A microcontroller (MCU) is not a chip that performs a certain logic function but integrates a computer system into a single chip. Specifically, the CPU, the random access memory (RAM), the read only memory (ROM), and the interrupt System, timer / counter and input / output (I / O) circuit and other major components, integrated in a chip, which constitutes a small computer system. Microcontroller as the core of the circuit is called a microcontroller circuit.