- Patent Title: Triggering next state verify in progam loop for nonvolatile memory
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Application No.: US16916790Application Date: 2020-06-30
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Publication No.: US11355208B2Publication Date: 2022-06-07
- Inventor: Yu-Chung Lien , Fanglin Zhang , Zhuojie Li , Huai-Yuan Tseng
- 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
- Agent Steven Hurles
- Main IPC: G11C16/06
- IPC: G11C16/06 ; G11C16/34 ; G11C16/04 ; G11C16/10 ; H01L27/11582 ; G11C16/26 ; H01L27/11565 ; G11C11/56

Abstract:
Apparatus and methods are described to program memory cells and verify stored values programmed into the cells. The next stage in stored memory can be moved to the current verification iteration when certain conditions are met. Verification can include counting bits that exceed a voltage value for a stage being verified to produce a bit count number and determining if the bit count number for the stage being verified meets a threshold value. If the bit count number does not meet the threshold, the verification process can continue with a current verify iteration and thereafter move to a next verify iteration. If the bit count number does meet the threshold, the process can add a next stage to the current verify iteration and thereafter move to a next verify iteration.
Public/Granted literature
- US20210407605A1 TRIGGERING NEXT STATE VERIFY IN PROGAM LOOP FOR NONVOLATILE MEMORY Public/Granted day:2021-12-30
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