A chip and method supporting sleep mode

Abstract

The invention provides a chip allowing a sleep mode and a method. A clock controller is used for applying to switch off a clock circuit according to low power consumption, a system clock is suspended to be provided for an edge detecting circuit and a central processing unit, and the sleep mode is executed in a triggering mode. Under the sleep mode, the edge detecting circuit is used for detecting signals to be detected and generating rousing signals according to the signals to be detected; the clock controller is used for switching on the clock circuit according to the rousing signals and providing the system clock again for the edge detecting circuit and the central processing unit, sleep mode signals are sent to the edge detecting circuit, and a common mode is executed in a triggering mode. The chip allowing the sleep mode and the method are used for switching off all clock networks and all clock generating circuits and rousing the sleep mode on the premise that functions are not influenced, and therefore the power consumption of the chip is reduced, and the power consumption of the chip is made to be minimized.

Description

technical field [0001] The invention relates to the technical field of electronic circuits, in particular to a chip and method for supporting a sleep mode. 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 controlled by the CPU, and the wake-up from t...

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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