Small-size SoC ultra-low power consumption control circuit and method

Abstract

The invention discloses a small-size SoC ultra-low power consumption control circuit and method. The circuit structurally comprises a logic circuit system, a low power consumption control module a power management module, a clock management module and a low-frequency clock module. When an idle state is required, a voltage value at a power supply end of the logic circuit system is reduced, by the low power consumption control module on hardware, to only keep a data state in the logic circuit system and not support a lowest value of signal reversal, and meanwhile, a clock source of the logic circuit system is closed to eliminate logic dynamic power consumption and reduce electric leakage power consumption to be the lowest; and moreover, software is not required for storing a system operationstate, and when awakening is carried out, the software is not required to restore the scene and the next instruction of the system can be directly operated, so that the awakening speed is improved and the user experience is strengthened.

Description

technical field [0001] The invention relates to system-on-chip technology, in particular to a small SoC ultra-low power consumption control circuit and method. Background technique [0002] At present, with the continuous development and popularization of contemporary electronic technology, human work and life are closely linked with electronic technology. For example, the portable and wireless entertainment electronic products free people from the shackles of wires; the application of smart water meters greatly reduces labor costs; health monitoring electronic products allow people to grasp the physical condition of personnel in real time; tracking and positioning products can avoid The loss of goods or persons. This type of electronic product has two states of idle and working. The overall low power consumption is the most important technical indicator, which is finally reflected in the battery life of a single charge or the product. There are currently two ways to reduc...

AI Technical Summary

Problems solved by technology

There are currently two ways to reduce the power consumption of this type of electronics on the market: the first is to use software to reduce the voltage of the logic circuit to optimize the power consumption, but due to the establishment of the signal and the maintenance of the clock, it is necessary to reserve Sufficient voltage margin makes it impossible to minimize the overall power consumption; the second is to use the auxiliary micro-control unit as the power management unit to control the voltage, but this solution is mainly used in medium and large SoCs. A computing unit, which cannot be applied to products such as Bluetooth, wifi, and BLE that have strong requirements for low power consumption

At the same time, in order to reduce the power consumption in the idle state in the above two methods, the program clock frequency will be reduced to the KHz level, which will cause the product to wake up slowly and affect the user experience.

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