Storage device and control device and control method thereof

Abstract

The embodiment of the invention discloses a storage device and a control device and method thereof, the storage device further comprises a plurality of storage units, and the control device comprises a detection module used for generating an ith clock control signal when it is detected that the peak current of a first storage unit executing a first programming operation is in an ith current interval; and the clock module is used for switching the clock frequency to the ith clock frequency corresponding to the ith current interval according to the ith clock control signal, and i is a positive integer. In the embodiment of the invention, the clock frequency is flexibly adjusted, the working flexibility of the clock is improved, and the problem of overhigh power consumption of the clock can be improved by reducing the clock frequency; the frequency change of the internal clock is controlled by monitoring the magnitude of the peak current, and compared with the prior art, the clock working flexibility is improved, the ICC can be reduced, the power consumption can be reduced, and the performance of a chip can be improved.

Description

technical field [0001] Embodiments of the present invention relate to storage technologies, and in particular, to a storage device, a control device and a control method thereof. Background technique [0002] Nand flash memory is a kind of flash memory, which uses a non-linear macro-cell mode inside, which provides a cheap and effective solution for the realization of solid-state large-capacity memory. Nand flash memory has the advantages of large capacity and fast rewriting speed, and is suitable for the storage of large amounts of data, so it has been more and more widely used in the industry, such as embedded products including digital cameras, MP3 walkman memory cards, small size U disk, etc. [0003] There is a clock inside the Nand flash, which is used to record the time of reading, writing and erasing operations, so as to obtain the reading, writing and erasing speed. At present, when Nand flash reads, writes and erases, the frequency of the internal clock is fixed,...

AI Technical Summary

Problems solved by technology

At present, when Nand flash reads, writes and erases, the frequency of the internal clock is fixed, and the clock work is not flexible.

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