Invention Grant
- Patent Title: Non-volatile memory and method for sensing with pipelined corrections for neighboring perturbations
- Patent Title (中): 用于相邻摄动的流水线校正的非易失性存储器和方法
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Application No.: US12347864Application Date: 2008-12-31
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Publication No.: US07813181B2Publication Date: 2010-10-12
- 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:
A page of non-volatile multi-level storage elements on a word line WLn is sensed in parallel while compensating for perturbations from a neighboring page on an adjacent word line WLn+1. First, the programmed thresholds of storage elements on WLn+1 are sensed in the time domain and encoded as time markers. This is accomplished by a scanning sense voltage increasing with time. The time marker of a storage element indicates the time the storage element starts to conduct or equivalently when the scanning sense voltage has reached the threshold of the storage element. Secondly, the page on WLn is sensed while the same scanning voltage with an offset level is applied to WLn+1 as compensation. In particular, a storage element on WLn will be sensed at a time indicated by the time marker of an adjacent storage element on WLn+1, the time when the offset scanning voltage develops an appropriate compensating bias voltage on WLn+1.
Public/Granted literature
- US20100165738A1 Non-Volatile Memory And Method For Sensing With Pipelined Corrections For Neighboring Perturbations Public/Granted day:2010-07-01
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