Memory system and operating method thereof

Patent metadata

Field	Value
Publication number	US-10891075-B2
Application number	US-201816116327-A
Country	US
Kind code	B2
Filing date	Aug 29, 2018
Priority date	Feb 1, 2018
Publication date	Jan 12, 2021
Grant date	Jan 12, 2021

Abstract

A memory system may include: a plurality of resources; and a frequency adjuster configured to adjust operating frequencies of the plurality of resources at a predetermined adjustment timing, wherein the adjustment timing comprises at least one timing for dividing partial operation periods of at least one resource among the plurality of resources.

First claim

What is claimed is:

1. A memory system comprising:
a plurality of resources; and
a frequency adjuster configured to adjust operating frequencies of the plurality of resources at a predetermined adjustment timing during operations of the plurality of resources,
wherein the adjustment timing comprises at least one timing for dividing partial operation periods of at least one resource among the plurality of resources.

2. The memory system of claim 1 , wherein the frequency adjuster divides a power budget into allowable amounts of power to allow to the plurality of resources, respectively, at the adjustment timing, and determines the operating frequencies based on the allowable amounts of power.

3. The memory system of claim 2 , wherein the frequency adjuster determines the operating frequencies by referring to an operating frequency table, and
the operating frequency table comprises operating frequencies corresponding to the allowable amounts of power of the respective plurality of resources.

4. The memory system of claim 2 , wherein the frequency adjuster determines an allowable amount of power of a first resource, of the plurality of resources, such that a ratio of the allowable amount of power of the first resource to reference power consumption of the first resource is higher than a reference ratio, when the priority of the first resource is higher than a reference priority at the adjustment timing.

5. The memory system of claim 4 , wherein the frequency adjuster determines an operating frequency of the first resource by adjusting a reference operating frequency of the first resource according to the ratio of the allowable amount of power.

6. The memory system of claim 2 , wherein the frequency adjuster determines a ratio of reference power consumption amounts of the plurality of resources at the adjustment timing, and divides the power budget into the allowable amounts of power according to the ratio of the reference power consumption amounts.

7. The memory system of claim 6 , wherein the frequency adjuster determines a ratio of an allowable amount of power of a first resource, of the plurality of resources, to a reference power consumption amount of the first resource based on the allowable amounts of power, and determines an operating frequency of the first resource by adjusting a reference operating frequency of the first resource according to the ratio of the allowable amount of power.

8. The memory system of claim 2 , wherein the frequency adjuster adjusts the operating frequencies by adjusting reference operating frequencies of the resources when a sum of reference power consumption amounts of the resources exceeds the power budget at the adjustment timing, and retains the reference operating frequencies of the resources when the sum of the reference power consumption amounts does not exceed the power budget.

9. The memory system of claim 1 , wherein the partial operation periods comprise a peak power operation period of the resource.

10. The memory system of claim 1 , wherein the partial operation periods are divided at one of a timing at which reference power consumption of the resource is rapidly changed and a timing at which an operation of the resource has been performed up to a set percentage of completion.

11. An operating method of a memory system, comprising adjusting operating frequencies of a plurality of resources at a predetermined adjustment timing during operations of the plurality of resources,
wherein the adjustment timing comprises at least one timing for dividing partial operation periods of at least one resource among the plurality of resources.

12. The operating method of claim 11 , wherein the adjusting of the operating frequencies comprises:
dividing a power budget into allowable amounts of power to allow to the plurality of resources at the adjustment timing; and
adjusting the operating frequencies based on the allowable amounts of power.

13. The operating method of claim 12 , wherein the adjusting of the operating frequencies comprises determining the operating frequencies by referring to an operating frequency table, and
wherein the operating frequency table comprises operating frequencies corresponding to the allowable amounts of power of the respective plurality of resources.

14. The operating method of claim 12 , wherein the dividing of the power budget into the allowable amounts of power comprises determining an allowable amount of power of a first resource, such that a ratio of the allowable amount of power of the first resource to reference power consumption of the first resource is higher than a reference ratio, when the priority of the first resource is higher than a reference priority at the adjustment timing.

15. The operating method of claim 14 , wherein the adjusting of the operating frequencies comprises deciding an operating frequency of the first resource by adjusting a reference operating frequency of the first resource according to the ratio of the allowable amount of power.

16. The operating method of claim 12 , wherein the dividing of the power budget into the allowable amounts of power comprises:
determining a ratio of reference power consumption amounts of the plurality of resources at the adjustment timing; and
dividing the power budget into the allowable amounts of power according to the ratio of the reference power consumption amounts.

17. The operating method of claim 16 , wherein the adjusting of the operating frequencies comprises:
determining a ratio of an allowable amount of power of a first resource to reference power consumption of the first resource based on the allowable amounts of power; and
deciding an operating frequency of the first resource by regulating a reference operating frequency of the first resource according to the ratio of the allowable amount of power.

18. The operating method of claim 12 , wherein the adjusting of the operating frequencies comprises:
adjusting the operating frequencies by adjusting reference operating frequencies of the plurality of resources, when a sum of reference power consumption amounts of the plurality of resources exceeds the power budget at the adjustment timing; and
retaining the reference operating frequencies of the plurality of resources when the sum of the reference power consumption amounts does not exceed the power budget.

19. The operating method of claim 11 , wherein the partial operation periods comprise a peak power operation period of the resource.

20. The operating method of claim 11 , wherein the partial operation periods are divided at one of a timing that reference power consumption of the resource is rapidly changed, or a timing that an operation of the resource has been performed up to a predetermined progress.

21. A memory system comprising:
a memory device; and
a controller configured to control the memory device,
wherein the controller includes a plurality of resources, each corresponding to a hardware element for at least one operation of the memory device, and
a frequency adjuster configured to adjust an allowable amount of power for each of the plurality of resources at a set adjustment timing during operations of the plurality of resources based on a power budget and priorities of the plurality of resources.

Assignees

• Sk Hynix Inc

Inventors

• Chun Dong Yeob
• Lee Hak Dae

Classifications

• G06F1/3275 Primary

  Power saving in memory, e.g. RAM, cache · CPC title

• G06F1/324

  by lowering clock frequency · CPC title

• G06F1/3237

  by disabling clock generation or distribution · CPC title

• Y02D10/00

  Energy efficient computing, e.g. low power processors, power management or thermal management · CPC title

• G06F3/0674

  Disk device · CPC title