Invention Grant
- Patent Title: Predictive programming in non-volatile memory
- Patent Title (中): 非易失性存储器中的预测编程
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Application No.: US11733694Application Date: 2007-04-10
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Publication No.: US07643348B2Publication Date: 2010-01-05
- Inventor: Raul-Adrian Cernea
- Applicant: Raul-Adrian Cernea
- Applicant Address: US CA Milpitas
- Assignee: Sandisk Corporation
- Current Assignee: Sandisk Corporation
- Current Assignee Address: US CA Milpitas
- Agency: Davis Wright Tremaine LLP
- Main IPC: G11C16/04
- IPC: G11C16/04

Abstract:
In a nonvolatile memory having an array of memory cells, wherein the memory cells are individually programmable to one of a range of threshold voltage levels, there is provided a predictive programming mode in which a predetermined function predicts what programming voltage level needs to be applied in order to program a given memory cell to a given target threshold voltage level. In this way, no verify operation needs to be performed, thereby greatly improving the performance of the programming operation. In a preferred embodiment, the predetermined function is linear and is calibrated for each memory cell under programming by one or more checkpoints. The checkpoint is an actual programming voltage that programs the memory cell in question to a verified designated threshold voltage level.
Public/Granted literature
- US20080253197A1 Predictive Programming in Non-Volatile Memory Public/Granted day:2008-10-16
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