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
  • Application No.: US12039633
    Application Date: 2008-02-28
  • Publication No.: US07876598B2
    Publication Date: 2011-01-25
  • Inventor: Peter SchroegmeierStefan Dietrich
  • Applicant: Peter SchroegmeierStefan 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
Apparatus and method for determining a memory state of a resistive n-level memory cell and memory device
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.
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