Chip and method for realizing low-power-consumption mode

Abstract

The invention provides a chip for realizing a low-power-consumption mode, comprising a standard reference source circuit capable of outputting appointed electrical level and bias, a power supply voltage low-voltage detection circuit, a low-power-consumption logic control circuit, and a digital logic unit, wherein the power supply voltage low-voltage detection circuit is used for comparing sampled chip current and voltage with the appointed electrical level and outputting a marking signal; the low-power-consumption logic control circuit is used for correspondingly outputting a control signal according to the change of high and low electrical levels of the marking signal; and the digital logic unit receives a control signal of the high electrical level and the chip enters the low-power-consumption mode; under the control of a clock signal, the standard reference source circuit and the power supply voltage low-voltage detection circuit can sample the change of the voltage of a power supply of the chip at regular time; and when the chip is at the low-power-consumption mode, the digital logic unit receives a control signal of the lower electrical level, and the chip quits the low-power-consumption mode. The invention further provides a method for realizing the low-power-consumption mode so as to solve the problem that the time of delaying data keeping time when power is suddenly off and reduce the problem of the possibility of instantly increasing the chip current, caused by spurious triggering.

Description

technical field [0001] The invention belongs to the field of chips, and in particular relates to a chip and a method for realizing a low power consumption mode. Background technique [0002] Chips usually require the power supply to work properly within a certain voltage range. For battery VBAT applications, the power supply voltage of the chip is usually required to be between 1.8V and 3.6V. When the battery VBAT voltage is lower than 1.8V, although the system cannot work normally, users often expect that the important data stored in the internal RAM will not be lost during the operation of the chip, and the original data stored in the internal RAM can continue to be used after the battery is replaced. data. Although the data stored in the internal RAM will be lost when the chip is completely powered off, as long as the power supply voltage of the chip is higher than 0.7V, the RAM can still maintain its internal data. In addition, when the battery VBAT is replaced, the p...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a chip and method for realizing low power consumption mode, so as to be able to judge when the power supply voltage of the chip is powered off, and then solve the problem that the internal RAM may not be able to retain data due to the uncertain power-off time, and effectively It greatly reduces the probability of the instantaneous increase of the chip current caused by false triggering

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