IP Library › Granted Patent US 12,353,761
Granted Patent B2
US 12,353,761 · App. 17/887,366 · Granted Jul 8, 2025

Memory sub-system transfer queue retention

Inventors: Vinay Sandeep (Bangalore, IN); Sanandan Sharma (Hyderabad, IN); Amit Bhardwaj (Bangalore, IN); Prashanth Reddy Enukonda (Hyderabad, IN)
Assignee: Micron Technology, Inc.
G06F3/0659G06F3/0619G06F3/0656G06F3/0679
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Quick Facts
Patent No.
US 12,353,761
App. No.
17/887,366
Granted
Jul 8, 2025
Kind
B2
Abstract

A method includes issuing a program command to a logic unit (LUN) of a memory device, writing a plurality of commands to a transfer queue within the memory device, detecting a program failure for the LUN of the memory device, and maintaining a number of the plurality of commands in the transfer queue.

Claims (36)

1. A method, comprising:

issuing a program command to a logic unit (LUN) of a memory device;

writing a plurality of commands to a transfer queue of the memory device;

detecting a program failure for the LUN of the memory device, wherein the program failure is a failure of the program command;

subsequently to receiving the indication of the program failure for the LUN maintaining one or more of the plurality of commands in the transfer queue without overwriting the one or more of the plurality of commands in a set of physically addressable memory cells that are associated with the transfer queue, wherein the one or more of the plurality of commands include access commands;

pushing one or more of the maintained commands to the LUN that has the failure; and

recovering data from a computer component, wherein the data corresponds to one or more of the commands maintained in the transfer queue.

2. The method of claim 1 , further comprising recovering single level cell (SLC) data from a buffer.

3. The method of claim 2 , further comprising recovering quad level cell (QLC) data from a cache.

4. The method of claim 3 , further comprising programming the recovered QLC data to the memory device.

5. The method of claim 2 , further comprising programming the recovered SLC data to the memory device.

6. An apparatus, comprising:

a transfer queue retention component configured to:

receive a plurality of commands to a transfer queue;

receive an indication of a program failure for a logic unit (LUN), wherein the program failure is a failure of a program command issued to the LUN;

maintain one or more of the plurality of commands in the transfer queue, subsequently to receiving the indication of the program failure for the LUN, without overwriting the one or more of the plurality of commands in a set of physically addressable memory cells that are associated with the transfer queue, wherein the one or more of the plurality of commands include access commands;

pushing one or more of the maintained commands to the LUN that has the failure; and

recover data from a computer component, wherein the data corresponds to one or more of the commands maintained in the transfer queue.

7. The apparatus of claim 6 , wherein the data is single level cell (SLC) data and the computer component is a buffer.

8. The apparatus of claim 6 , wherein the data is quad level cell (QLC) data and the computer component is a cache.

9. The apparatus of claim 6 , wherein one or more of the plurality of commands is based on a size of data associated with the commands.

10. A system, comprising:

a plurality of memory components arranged to form a stackable cross-gridded array of memory cells; and

a processing device coupled to the plurality of memory components, wherein the processing device is configured to:

receive plurality of commands to a transfer queue;

receive an indication of a program failure for a logic unit (LUN), wherein the program failure is a failure of a program command issued to the LUN;

maintain one or more of the plurality of commands in the transfer queue, subsequently to receiving the indication of a program failure for the LUN, without overwriting the one or more of the plurality of commands in a set of physically addressable memory cells that are associated with the transfer queue, wherein the one or more of the plurality of commands include access commands;

pushing one or more of the maintained commands to the LUN that has the failure; and

recover data from a computer component, wherein the data corresponds to one or more of the plurality of commands maintained in the transfer queue.

11. The system of claim 10 , wherein the processing device is configured to:

perform sense operations subsequently to receiving the indication of a program failure for the LUN.

12. The system of claim 10 , wherein the data is single level cell (SLC) data and the computer component is a buffer.

13. The system of claim 10 , wherein the data is quad level cell (QLC) data and the computer component is a cache.

14. The system of claim 10 , wherein the indication comprises a status indicator.

15. The system of claim 10 , wherein the indication comprises a flag.

16. The system of claim 10 , wherein the memory components comprise memory dice.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Aug 12, 2022
From: SHARMA, SANANDAN; BHARDWAJ, AMIT; ENUKONDA, PRASHANTH REDDY; SANDEEP, VINAY
To: MICRON TECHNOLOGY, INC.
Reel/Frame 060800/0652 →
Continuity (1)
Related Publication 20240053924A1 · Feb 15, 2024
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