发明授权
- 专利标题: Memory cell with proportional current self-reference sensing
- 专利标题(中): 具有比例电流自参考感测的存储单元
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申请号: US12946582申请日: 2010-11-15
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公开(公告)号: US08203899B2公开(公告)日: 2012-06-19
- 发明人: Yiran Chen , Hai Li , Wenzhong Zhu , Xiaobin Wang , Ran Wang , Harry Hongyue Liu
- 申请人: Yiran Chen , Hai Li , Wenzhong Zhu , Xiaobin Wang , Ran Wang , Harry Hongyue Liu
- 申请人地址: US CA Scotts Valley
- 专利权人: Seagate Technology LLC
- 当前专利权人: Seagate Technology LLC
- 当前专利权人地址: US CA Scotts Valley
- 代理机构: Hall Estill Attorneys at Law
- 主分类号: G11C7/02
- IPC分类号: G11C7/02
摘要:
Various embodiments of the present invention are generally directed to a method and apparatus for sensing a programmed state of a memory cell, such as a spin-torque transfer random access memory (STRAM) cell. A first read current is applied to the memory cell to generate a first voltage. A second read current is subsequently applied to the memory cell to generate a second voltage, with the second read current being proportional in magnitude to the first read current. A comparison is made between the first and second voltages to determine the programmed state of the memory cell.
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