发明授权
- 专利标题: Semiconductor memory device capable of achieving narrower distribution width of threshold voltages of memory cells and method of data write in the same
- 专利标题(中): 半导体存储器件能够实现较小的存储单元阈值电压分布宽度和数据写入方法
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申请号: US12076787申请日: 2008-03-24
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公开(公告)号: US07652935B2公开(公告)日: 2010-01-26
- 发明人: Tomoya Ogawa , Takashi Ito , Hidenori Mitani , Takashi Kono
- 申请人: Tomoya Ogawa , Takashi Ito , Hidenori Mitani , Takashi Kono
- 申请人地址: JP Tokyo
- 专利权人: Renesas Technology Corp.
- 当前专利权人: Renesas Technology Corp.
- 当前专利权人地址: JP Tokyo
- 代理机构: McDermott Will & Emery LLP
- 优先权: JP2007-092352 20070330
- 主分类号: G11C7/22
- IPC分类号: G11C7/22
摘要:
When a data write sequence is started, initially, write data is latched in a data latch circuit corresponding to one memory mat. Then, a program pulse is applied to the memory mat, and data read from a memory cell, which is a data write target bit in the memory mat, is performed. Thereafter, verify determination of the memory mat is performed. After a verify operation for the memory mat is completed, a program pulse is applied to another memory mat, and a verify operation for another memory mat is performed.
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