Array button based circuit used for power switch

The utility model discloses an array button based circuit used for a power switch. The array button based circuit used for the power switch comprises an array of buttons, a power supply enabled circuit, a voltage reduction circuit, a time-delay circuit, a microcontroller and an external power supply; the microcontroller is used for detecting a work state of each button in the array of buttons; the array button comprises a power switch control and function reuse button S1, an output terminal of a column where the button S1 is arranged is electrically connected with the microcontroller through a first protection circuit, an input terminal of a row where the button S1 is arranged is connected with an input terminal of the time-delay circuit and an input terminal of the power supply enabled circuit through a second protection circuit by electrical signals, and an output terminal of the time-delay circuit and an output terminal of the power supply enabled circuit are respectively electrically connected with a power supply enabled terminal of the voltage reduction circuit. According to the array button based circuit used for the power switch, the first protection circuit and the second protection circuit are disposed for effectively insolating the power switch control and function reuse button S1 from the microcontroller and the time-delay circuit, so a function of the power switch and a function of the array button will not affect each other.