发明申请
US20100020607A1 METHOD AND APPARATUS FOR ADAPTIVE MEMORY CELL OVERERASE COMPENSATION
有权
用于自适应记忆细胞过表达补偿的方法和装置
- 专利标题: METHOD AND APPARATUS FOR ADAPTIVE MEMORY CELL OVERERASE COMPENSATION
- 专利标题(中): 用于自适应记忆细胞过表达补偿的方法和装置
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申请号: US12574079申请日: 2009-10-06
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公开(公告)号: US20100020607A1公开(公告)日: 2010-01-28
- 发明人: Ashot Melik-Martirosian
- 申请人: Ashot Melik-Martirosian
- 主分类号: G11C16/04
- IPC分类号: G11C16/04 ; G11C16/06
摘要:
A method and apparatus are provided for adaptive memory cell overerase compensation. A semiconductor memory device (100) is provided for performing the adaptively compensating erase verify operation (500, 600). The memory device (100) includes at least one word line (402). One or more memory cells (200) and one or more reference cells (406, 408) are connected to the word lines (402), where the one or more reference cells (406, 408) include an erased reference cell (408) connected to each word line (402). The method (500, 600) for adaptive memory cell overerase compensation includes determining an erase verify gate voltage (506, 608) utilizing the erased reference cell(s) (408) and verifying an erase voltage (514) of the memory cells (200) in response to the erase verify gate voltage (512, 614).
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