发明公开
EP1456851A1 A PROGRAMMABLE CONDUCTOR RANDOM ACCESS MEMORY AND A METHOD FOR WRITING THERETO
有权
与可编程梯子和相关的编程进程内存随机访问
- 专利标题: A PROGRAMMABLE CONDUCTOR RANDOM ACCESS MEMORY AND A METHOD FOR WRITING THERETO
- 专利标题(中): 与可编程梯子和相关的编程进程内存随机访问
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申请号: EP02799242.9申请日: 2002-12-16
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公开(公告)号: EP1456851A1公开(公告)日: 2004-09-15
- 发明人: HUSH, Glen
- 申请人: MICRON TECHNOLOGY, INC.
- 申请人地址: 8000 South Federal Way Boise, ID 83707-0006 US
- 专利权人: MICRON TECHNOLOGY, INC.
- 当前专利权人: MICRON TECHNOLOGY, INC.
- 当前专利权人地址: 8000 South Federal Way Boise, ID 83707-0006 US
- 代理机构: Round, Edward Mark
- 优先权: US22722 20011220
- 国际公布: WO2003054887 20030703
- 主分类号: G11C11/34
- IPC分类号: G11C11/34 ; G11C7/12
摘要:
The present invention provides an improved write circuit and method for writing a programmable conductor random access memory (PCRAM) cell. The method comprises precharging a bit line to a first voltage and applying a second voltage to a first terminal of a chalcogenide memory element. A second terminal of the chalcogenide memory element is selectively coupled to the bit line to produce a voltage across the memory element sufficient to write a predetermined resistance state into the element. The first voltage may take on two different values to program two different resistance states into the memory element.
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