Chip and method for achieving sleep mode wake-up through edge detection circuit

Abstract

The invention provides a chip and method for achieving sleep mode wake-up through an edge detection circuit. A central processing unit is used for sending a low-power-consumption application to a clock controller; the clock controller is used for closing a clock circuit according to the lower-power-consumption application, temporarily stopping providing a system clock for the edge detection circuit and the central processing unit and triggering entering a sleep mode; in the sleep mode, the edge detection circuit is used for detecting a signal to be detected and generating a wake-up signal according to the signal to be detected; the clock controller is used for switching on the clock circuit according to the wake-up signal, renewedly providing the system clock for the edge detection circuit and the central processing unit and sending a sleep mode signal to the edge detection circuit to trigger entering a common mode. The chip can shut down all clock networks and all clock generation circuits and wake up the sleep mode without affecting functions. In this way, the power consumption of the chip is lowered to the lowest degree.

Description

technical field [0001] The invention relates to the technical field of electronic circuits, in particular to a chip and a method for realizing wake-up in a sleep mode through an edge detection circuit. Background technique [0002] With the increasingly widespread application of portable devices, the design of low power consumption of chips has attracted more and more attention. There are two methods of low power consumption technology, one is to reduce power consumption without affecting the use of functions, and the other is to reduce power consumption without affecting the use of functions. The former reduces power consumption to a lesser extent; the latter reduces power consumption to a greater extent. These two low-power techniques are actually a trade-off between feature usage and power consumption. For the chip, one technology for low power consumption is to turn off all functions of the chip, and the chip enters sleep mode. The entry into the sleep mode is usually...

AI Technical Summary

Problems solved by technology

Therefore, when the chip enters the sleep mode, in order to provide a clock for the edge detection of the wake-up sleep mode, part of the clock generation circuit and the clock network on the circuit chip must be turned on, so it needs to consume part of the power consumption. For the sleep mode, this part of the power consumption is to be avoided

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