Method for reducing read power consumption

Abstract

The invention discloses a method for reducing read power consumption. The method comprises the following steps: S1, starting a read operation, and opening a control logic circuit and a reference circuit; S2, judging whether a read control signal is started or not, if so, performing the step S3, and otherwise, performing the step S5; S3, closing a reference circuit pull-down signal; S4, judging whether the read control signal is ended or not, if so, performing the step S5, and otherwise, continuously performing the step S3; and S5, opening the reference circuit pull-down signal. According to the method for reducing the read power consumption provided by the embodiment of the invention, whether a system is in a data reading state or not can be judged by judging whether the read control signal is started or not, such that opening and closing of the reference circuit pull-down signal can be controlled; the reference circuit is closed during the two-time data reading periods; and thus, the purpose of further reducing the read power consumption of the system is achieved.

Description

technical field [0001] Embodiments of the present invention relate to the field of storage technologies, and in particular to a method for reducing read power consumption. Background technique [0002] With the development of technology, mobile devices and wearable devices have been widely used, and most of these devices are powered by batteries, so the power consumption requirements of integrated circuit chips in devices are also getting higher and higher. However, as one of the main storage chips of a mobile device, a non-volatile flash memory medium (norflash) has higher requirements on its power consumption performance. [0003] Therefore, how to reduce the power consumption of memory chips in mobile devices is an urgent problem to be solved. In the serial peripheral interface (Serial Peripheral Interface, SPI) norflash, the existing read data operation process is: after the read operation starts, first open the control logic circuit and the reference circuit in the nor...

AI Technical Summary

Problems solved by technology

In the serial peripheral interface (Serial Peripheral Interface, SPI) norflash, the existing read data operation process is: after the read operation starts, first open the control logic circuit and the reference circuit in the norflash, and then start the read control signal to read the data, each read Output 8-bit or 16-bit data, the data is serially output, and the reference circuit is always open between two read operations, such as figure 1 The waveform change diagram of the reference circuit enable signal REFEN and the read control signal SENSEN shown will obviously cause more waste of power consumption

Images