发明申请
- 专利标题: Method for switching magnetic moment in magnetoresistive random access memory with low current
- 专利标题(中): 低电流磁阻随机存取存储器中磁矩切换的方法
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申请号: US12219247申请日: 2008-07-18
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公开(公告)号: US20090003043A1公开(公告)日: 2009-01-01
- 发明人: Chien-Chung Hung , Ming-Jer Kao , Yuan-Jen Lee , Lien-Chang Wang
- 申请人: Chien-Chung Hung , Ming-Jer Kao , Yuan-Jen Lee , Lien-Chang Wang
- 专利权人: Industrial Technology Research Institute
- 当前专利权人: Industrial Technology Research Institute
- 主分类号: G11C11/02
- IPC分类号: G11C11/02 ; G11C7/00
摘要:
A method for writing a memory cell of a magnetoresistive random access memory (MRAM) device includes, sequentially, providing a first magnetic field in a first direction, providing a second magnetic field in a second direction substantially perpendicular to the first direction, turning off the first magnetic field, providing a third magnetic field in a third direction opposite to the first direction, turning off the second magnetic field, and turning off the third magnetic field. A method for switching magnetic moments in an MRAM memory cell includes providing a magnetic field in a direction forming a blunt angle with a direction of a bias magnetic field. A method for reading an MRAM device includes partially switching magnetic moments in a reference memory cell to generate a reference current; measuring a read current through a memory cell to be read; and comparing the read current with the reference current.
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