IP Library › Granted Patent US 11,244,740
Granted Patent B1
US 11,244,740 · App. 16/989,374 · Granted Feb 8, 2022

Adapting an error recovery process in a memory sub-system

Inventors: Zhongguang Xu (San Jose, CA); Murong Lang (San Jose, CA); Zhenming Zhou (San Jose, CA)
Assignee: Micron Technology, Inc.
G11C29/50004G11C16/10G11C16/26G11C29/12005G11C29/44
View Patent ↗
Loading inventors, assignments & file history…
Monitor This Case
Get email alerts when status or documents change.
Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 11,244,740
App. No.
16/989,374
Granted
Feb 8, 2022
Kind
B1
Abstract

A first sequence of operations corresponding to an error recovery process of a memory sub-system is determined. A value corresponding to an operating characteristic of the memory sub-system is determined. The value is compared to a threshold level corresponding to the first sequence of operations to determine whether a condition is satisfied. In response to satisfying the first condition, a second sequence of operations corresponding to the error recovery process is executed.

Claims (41)

1. A method comprising:

determining, by a processing device, a first sequence of operations corresponding to an error recovery process of a memory sub-system;

determining a value corresponding to an operating characteristic of the memory sub-system;

comparing the value to a threshold level corresponding to the first sequence of operations to determine whether a condition is satisfied; and

in response to satisfying the condition, executing a second sequence of operations corresponding to the error recovery process.

2. The method of claim 1 , wherein the operating characteristic comprises a read retry rate associated with a read retry threshold voltage level.

3. The method of claim 2 , wherein the read retry threshold voltage level is selected from a set of read retry threshold voltage levels comprising a first read retry threshold voltage level, a second read retry threshold voltage level, and a third read retry threshold voltage level.

4. The method of claim 2 , wherein the read retry rate is determined based on a first count of read retry operations associated with a second read retry threshold voltage level compared to a sum of counts of read retry operations associated with a plurality of read retry threshold voltage levels.

5. The method of claim 1 , wherein the first condition is satisfied upon determining the value is greater than the first threshold level.

6. The method of claim 1 , wherein the first sequence of operations comprises one or more read retry operations executed using one of a plurality of different read threshold voltage levels.

7. The method of claim 1 , further comprising:

determining a further value corresponding to the operating characteristic of the memory sub-system; and

in response to determining the further value is greater than a second threshold level, executing a third sequence of operations.

8. A non-transitory computer readable medium comprising instructions, which when executed by a processing device, cause the processing device to perform operations comprising:

determining a value corresponding to a cycle count of a memory sub-system applying a first sequence of operations of an error recovery process;

determining the value is within an identified cycle count range of a set of cycle count value ranges; and

executing a second sequence of operations corresponding to the identified cycle count range.

9. The non-transitory computer readable medium of claim 8 , the operations further comprising

determining an updated value corresponding to the cycle count of the memory sub-system and

determining the updated value is within another cycle count range of the set of cycle count value ranges.

10. The non-transitory computer readable medium of claim 9 , the operations further comprising:

executing a third sequence of operations corresponding to the another cycle count range.

11. The non-transitory computer readable medium of claim 10 , wherein the third sequence of operations comprises a greater number of read retry operations than the second sequence of operations, and wherein the second sequence of operations comprises a greater number of read retry operations than the first sequence of operations.

12. The non-transitory computer readable medium of claim 8 , the operations further comprising:

maintaining a data structure comprising a plurality of error recovery process levels, wherein each error recovery process level comprises a cycle count range and a sequence of operations.

13. The non-transitory computer readable medium of claim 12 , the operations further comprising performing a look-up operation of the data structure to identify the second sequence of operations corresponding to the identified cycle count range.

14. A system comprising:

a memory component; and

a processing device, operatively coupled with the memory component, to perform operations comprising:

determining a first sequence of operations corresponding to an error recovery process of a memory sub-system;

determining a value corresponding to an operating characteristic of the memory sub-system;

comparing the value to a threshold level corresponding to the first sequence of operations to determine whether a condition is satisfied; and

in response to satisfying the condition, executing a second sequence of operations corresponding to the error recovery process.

15. The system of claim 14 , wherein the operating characteristic comprises a read retry rate associated with a read retry threshold voltage level.

16. The system of claim 15 , wherein the read retry threshold voltage level is selected from a set of read retry threshold voltage levels comprising a first read retry threshold voltage level, a second read retry threshold voltage level, and a third read retry threshold voltage level.

17. The system of claim 15 , wherein the read retry rate is determined based on a first count of read retry operations associated with a second read retry threshold voltage level compared to a sum of counts of read retry operations associated with a plurality of read retry threshold voltage levels.

18. The system of claim 14 , wherein the first condition is satisfied upon determining the value is greater than the first threshold level.

19. The system of claim 14 , wherein the first sequence of operations comprises one or more read retry operations executed using one of a plurality of different read threshold voltage levels.

20. The system of claim 14 , wherein the processing device is further to perform operations comprising:

determining a further value corresponding to the operating characteristic of the memory sub-system; and

in response to determining the further value is greater than a second threshold level, executing a third sequence of operations.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Aug 17, 2020
From: XU, ZHONGGUANG; LANG, MURONG; ZHOU, ZHENMING
To: MICRON TECHNOLOGY, INC.
Reel/Frame 053512/0518 →
Cited By (1)
US 12,451,208