IP Library Granted Patent US 12,026,394
Granted Patent B2
US 12,026,394 · App. 17/889,846 · Granted Jul 2, 2024

Adaptive time sense parameters and overdrive voltage parameters for wordlines at corner temperatures in a memory sub-system

Inventors: Zhenming Zhou (San Jose, CA); Ching-Huang Lu (Fremont, CA); Murong Lang (San Jose, CA)
Assignee: Micron Technology, Inc.
G06F3/0655G06F3/0604G06F3/0679
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Quick Facts
Patent No.
US 12,026,394
App. No.
17/889,846
Granted
Jul 2, 2024
Kind
B2
Abstract

A system includes a memory device and a processing device, operatively coupled with the memory device, to perform operations including: receiving a request to perform a memory access operation on a set of cells associated with a wordline of the memory device; determining that a temperature associated with the memory device satisfies a threshold criterion; determining a memory access operation type of the memory access operation; and performing the memory access operation on the set of cells associated with the wordline using a first time sense parameter, wherein the first time sense parameter corresponds to the memory access operation type and the temperature associated with the memory device.

Claims (60)

1. A system comprising:

a memory device; and

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

receiving a request to perform a memory access operation on a set of cells associated with a wordline of the memory device;

determining that a temperature associated with the memory device satisfies a threshold criterion;

determining a memory access operation type of the memory access operation;

identifying a first time sense parameter associated with the wordline, wherein the first time sense parameter is associated with the wordline based on a read window budget (RWB) associated with the wordline, and wherein the first time sense parameter corresponds to the memory access operation type and the temperature associated with the memory device; and

performing the memory access operation on the set of cells associated with the wordline using the first time sense parameter.

2. The system of claim 1 , wherein the processing device is to perform operations further comprising:

determining that the temperature associated with the memory device does not satisfy the threshold criterion; and

performing the memory access operation on the set of cells associated with the wordline using a default time sense parameter.

3. The system of claim 1 , wherein the processing device is to perform operations further comprising:

determining that the memory access operation type comprises a program verify operation.

4. The system of claim 1 , wherein the processing device is to perform operations further comprising:

determining that the memory access operation type comprises a read operation.

5. The system of claim 4 , wherein performing the memory access operation on the set of cells associated with the wordline further comprises using a first overdrive voltage parameter, wherein the first overdrive voltage parameter corresponds to the memory access operation type and the temperature associated with the memory device.

6. The system of claim 1 , wherein the processing device is to perform operations further comprising:

determining that an adaptive time sense configuration is enabled.

7. The system of claim 1 , wherein the processing device is to perform operations further comprising:

determining that an adaptive time sense configuration is disabled; and

performing the memory access operation on the set of cells associated with the wordline using a default time sense parameter.

8. A method comprising:

receiving a request to perform a memory access operation on a set of cells associated with a wordline of a memory device;

determining that a temperature associated with the memory device satisfies a threshold criterion;

determining that a memory access operation type of the memory access operation comprises a read operation;

identifying a first time sense parameter associated with the wordline, wherein the first time sense parameter is associated with the wordline based on a read window budget (RWB) associated with the wordline, and wherein the first time sense parameter corresponds to the memory access operation and the temperature associated with the memory device; and

performing the memory access operation on the set of cells associated with the wordline using the first time sense parameter and a first overdrive voltage parameter, wherein the first overdrive voltage parameter corresponds to the memory access operation type and the temperature associated with the memory device.

9. The method of claim 8 , further comprising:

determining that the temperature associated with the memory device does not satisfy the threshold criterion; and

performing the memory access operation on the set of cells associated with the wordline using a default time sense parameter.

10. The method of claim 8 , further comprising:

determining that the memory access operation type comprises a program verify operation; and

responsive to determining that the memory access operation type comprises the program verify operation, performing the memory access operation on the set of cells associated with the wordline using a second time sense parameter, wherein the second time sense parameter corresponds to the memory access operation type and the temperature associated with the memory device.

11. The method of claim 8 , further comprising:

determining that an adaptive time sense configuration is enabled.

12. The method of claim 8 , further comprising:

determining that an adaptive time sense configuration is disabled; and

performing the memory access operation on the set of cells associated with the wordline using a default time sense parameter.

13. The method of claim 8 , further comprising:

determining that an adaptive overdrive voltage configuration is enabled.

14. The method of claim 8 , further comprising:

determining that an adaptive overdrive voltage configuration is disabled; and

performing the memory access operation on the set of cells associated with the wordline using a default overdrive voltage parameter.

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

receiving a request to perform a memory access operation on a set of cells associated with a wordline of a memory device;

determining that a temperature associated with the memory device satisfies a threshold criterion;

determining a memory access operation type of the memory access operation;

identifying a first time sense parameter associated with the wordline, wherein the first time sense parameter is associated with the wordline based on a read window budget (RWB) associated with the wordline, and wherein the first time sense parameter corresponds to the memory access operation type and the temperature associated with the memory device; and

performing the memory access operation on the set of cells associated with the wordline using the first time sense parameter.

16. The non-transitory computer-readable storage medium of claim 15 , wherein the processing device is to perform operations further comprising:

determining that the temperature associated with the memory device does not satisfy the threshold criterion; and

performing the memory access operation on the set of cells associated with the wordline using a default time sense parameter.

17. The non-transitory computer-readable storage medium of claim 15 , wherein the processing device is to perform operations further comprising:

determining that the memory access operation type comprises a program verify operation.

18. The non-transitory computer-readable storage medium of claim 17 , wherein to perform the memory access operation on the set of cells associated with the wordline, the processing device is to perform operations further comprising using a first overdrive voltage parameter, wherein the first overdrive voltage parameter corresponds to the memory access operation type and the temperature associated with the memory device.

19. The non-transitory computer-readable storage medium of claim 15 , wherein the processing device is to perform operations further comprising:

determining that an adaptive time sense configuration is enabled.

20. The non-transitory computer-readable storage medium of claim 15 , wherein the processing device is to perform operations further comprising:

determining that an adaptive time sense configuration is disabled; and

performing the memory access operation on the set of cells associated with the wordline using a default time sense parameter.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 25, 2022
From: ZHOU, ZHENMING; LU, CHING-HUANG; LANG, MURONG
To: MICRON TECHNOLOGY, INC.
Reel/Frame 061525/0086 →
Continuity (1)
Related Publication 20240061608A1 · Feb 22, 2024
Cited By (1)
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