The setting and reset of the single

The setting and reset of the single chip microcomputer are to initialize the circuit to a certain state. Generally speaking, the function of the single chip reset circuit is to initialize a state machine to an empty state, while inside the single chip microcomputer, the single chip microcomputer is to load some registers and storage devices into the manufacturer's preset value during the reset. [9]The principle of the MCU reset circuit is to connect external resistors and capacitors to the reset pin RST of the MCU to realize the power-on reset. When the reset level lasts for more than two machine cycles, the reset is effective. The duration of the reset level must be greater than two machine cycles of the single chip. The specific value can be calculated from the RC circuit time constant.