Invention Grant
- Patent Title: Fast single phase program algorithm for quadbit
- Patent Title (中): 用于四位的快速单相程序算法
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Application No.: US11874076Application Date: 2007-10-17
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Publication No.: US07656705B2Publication Date: 2010-02-02
- Inventor: Darlene Hamilton , Fatima Bathul , Kulachet Tanpairoj , Ou Li
- Applicant: Darlene Hamilton , Fatima Bathul , Kulachet Tanpairoj , Ou Li
- Applicant Address: US CA Sunnyvale
- Assignee: Spansion LLC
- Current Assignee: Spansion LLC
- Current Assignee Address: US CA Sunnyvale
- Agency: Eschweiler & Associates, LLC
- Main IPC: G11C11/34
- IPC: G11C11/34

Abstract:
Methods of rapidly programming a wordline of multi-level flash memory cells comprising memory cell element-pairs having three or more data levels per bit or element corresponding to three or more threshold voltages are provided. An interactive program algorithm rapidly programs the elements of the wordline of memory cells in a learn phase and a single core programming phase. In one embodiment, each wordline comprises learn element-pairs first programmed to provide learn drain voltages for programming core element-pairs along the wordline having the same program pattern of data levels. A set comprising one or more program patterns is chosen to correspond with each program level used on the wordline. The learn element-pairs are programmed to determine a learned program drain voltage for each program level. This learned program drain voltage essentially provides a wordline and program level specific program characterization of the Vd required for the remaining elements of that wordline.
Public/Granted literature
- US20090103357A1 FAST SINGLE PHASE PROGRAM ALGORITHM FOR QUADBIT Public/Granted day:2009-04-23
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