Invention Grant
US07876598B2 Apparatus and method for determining a memory state of a resistive n-level memory cell and memory device
有权
用于确定电阻性n级存储器单元和存储器件的存储器状态的装置和方法
- Patent Title: Apparatus and method for determining a memory state of a resistive n-level memory cell and memory device
- Patent Title (中): 用于确定电阻性n级存储器单元和存储器件的存储器状态的装置和方法
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Application No.: US12039633Application Date: 2008-02-28
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Publication No.: US07876598B2Publication Date: 2011-01-25
- Inventor: Peter Schroegmeier , Stefan Dietrich
- Applicant: Peter Schroegmeier , Stefan Dietrich
- Applicant Address: DE Munich
- Assignee: Qimonda AG
- Current Assignee: Qimonda AG
- Current Assignee Address: DE Munich
- Agent John S. Economou
- Main IPC: G11C11/00
- IPC: G11C11/00

Abstract:
A determination of the memory state of a resistive n-level memory cell is described. The determination includes charging or discharging a read capacity of the memory cell by applying a voltage between a first electrode and a second electrode of the resistive memory cell. A voltage at the second electrode is compared to a reference voltage to obtain a comparison signal. The comparison signal is sampled at, at least, (n−1) time instants during the charge or discharge of the read capacity to obtain sampling values. The memory state of the memory cell can be determined based upon the sampling values.
Public/Granted literature
- US20090219756A1 Apparatus and Method for Determining a Memory State of a Resistive N-Level Memory Cell and Memory Device Public/Granted day:2009-09-03
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