发明授权
- 专利标题： Semiconductor memory device and system including the same
- 专利标题（中）： 半导体存储器件及其系统
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申请号： US12821515申请日： 2010-06-23
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公开(公告)号： US08208335B2公开(公告)日： 2012-06-26
- 发明人: Dong-Hyuk Lee , Jung-Bae Lee , Doo-Gon Kim , Cheol Kim
- 申请人： Dong-Hyuk Lee , Jung-Bae Lee , Doo-Gon Kim , Cheol Kim
- 申请人地址： KR Suwon-si, Gyeonggi-do
- 专利权人： Samsung Electronics Co., Ltd.
- 当前专利权人： Samsung Electronics Co., Ltd.
- 当前专利权人地址： KR Suwon-si, Gyeonggi-do
- 代理机构： Lee & Morse, P.C.
- 优先权： KR10-2009-0109879 20091113
- 主分类号： G11C7/00
- IPC分类号： G11C7/00
摘要：
A semiconductor memory device includes a cell array unit having a plurality of banks each having a plurality of blocks, and a refresh controller configured to set at least one of the blocks as a test block, perform a refresh operation on the blocks except for the test block in a self-refresh operation period, determine a refresh period of the test block, and then set another one of the blocks as the test block.