MCU Operation voltage detection circuit of MCU

摘要

The present invention relates to an MCU supply power abnormality detecting device and an MCU which detect an abnormality of a power supply to the MCU and prevent an abnormal state of the power supply from causing an operation state of the MCU to be uncertain, If the power supply that can not be woken up normally is detected, the power supply to the MCU is cut off, thereby preventing the MCU from entering the undetermined state, and furthermore, resetting the MCU to provide a circuit for returning the MCU to the established state For the purpose of.