Invention Grant
- Patent Title: Method for classifying memory cells in an integrated circuit
- Patent Title (中): 集成电路中存储单元的分类方法
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Application No.: US11786765Application Date: 2007-04-12
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Publication No.: US07864593B2Publication Date: 2011-01-04
- Inventor: Andreas Taeuber , Detlev Richter , Luca De Ambroggi , Konrad Seidel , Robert Petter , Marco Ziegelmayer
- Applicant: Andreas Taeuber , Detlev Richter , Luca De Ambroggi , Konrad Seidel , Robert Petter , Marco Ziegelmayer
- Applicant Address: DE Munich
- Assignee: Qimonda AG
- Current Assignee: Qimonda AG
- Current Assignee Address: DE Munich
- Main IPC: G11C16/04
- IPC: G11C16/04

Abstract:
A method for classifying memory cells in an integrated circuit is provided, wherein the integrated circuit has a memory cell field including a plurality of memory cells. The method includes determining, for each subset of the memory cells of a plurality of subsets of the memory cells, a threshold voltage distribution; determining whether the determined threshold voltage distributions fulfill a threshold voltage criterion; and depending on whether the determined threshold voltage distributions fulfill the threshold voltage criterion, classifying at least some of the non-selected memory cells.
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