Invention Grant
- Patent Title: Quick pass write programming techniques in a memory device
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Application No.: US17701365Application Date: 2022-03-22
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Publication No.: US11887677B2Publication Date: 2024-01-30
- Inventor: Muhammad Masuduzzaman , Deepanshu Dutta , Gerrit Jan Hemink
- Applicant: SanDisk Technologies LLC
- Applicant Address: US TX Addison
- Assignee: SANDISK TECHNOLOGIES LLC
- Current Assignee: SANDISK TECHNOLOGIES LLC
- Current Assignee Address: US TX Addison
- Agency: DICKINSON WRIGHT PLLC
- Main IPC: G11C16/34
- IPC: G11C16/34 ; G11C16/04 ; G11C16/10 ; H10B41/27 ; H10B43/27

Abstract:
The memory device includes a controller that is configured to program the memory cells of a selected word line in a plurality of program-verify iterations. During a verify portion at least one of the program-verify iterations, the controller determines a threshold voltage of at least one memory cell relative to a first verify low voltage VL1, a second verify low voltage VL2, and a verify high voltage VH associated with a data state being programmed. The controller also maintains a count of program-verify iterations since the at least one memory cell passed a verify high voltage of a previously programmed data state or discharges a sense node through a channel including the at least one memory cell and compares a discharge time to predetermined sense times associated with the first and second verify low voltages and with the verify high voltage.
Public/Granted literature
- US20230307072A1 QUICK PASS WRITE PROGRAMMING TECHNIQUES IN A MEMORY DEVICE Public/Granted day:2023-09-28
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