公开(公告)号：US20060039220A1

公开(公告)日：2006-02-23

申请号：US11205194

申请日：2005-08-17

申请人： Hiroyuki Takahashi ,  Atsushi Nakagawa ,  Takuya Kera ,  Masaki Miyata ,  Yasunari Kawaguchi ,  Kouichi Gotou

发明人： Hiroyuki Takahashi ,  Atsushi Nakagawa ,  Takuya Kera ,  Masaki Miyata ,  Yasunari Kawaguchi ,  Kouichi Gotou

IPC分类号： G11C7/00

CPC分类号： G11C29/12015 ,  G11C11/401 ,  G11C11/406 ,  G11C29/14 ,  G11C2211/4061

摘要： Disclosed is a semiconductor memory device having memory cells that are in need of refresh for data retention, includes control circuits for necessarily generating the refresh immediately before the read/write operation, and for setting the latency to a first fixed value at all times, for the first mode during the testing, and for necessarily generating the refresh immediately after the read/write operation, and for setting the latency to a second fixed value at all times, for the second mode during the testing.

摘要翻译： 公开了一种具有需要刷新数据保持的存储单元的半导体存储器件，包括在读/写操作之前必须产生刷新的控制电路，并且始终将等待时间设置为第一固定值，以供 在测试期间的第一模式，并且用于在读/写操作之后立即生成刷新，并且用于在测试期间将延迟设置为始终为第二固定值。

公开(公告)号：US07652943B2

公开(公告)日：2010-01-26

申请号：US11205194

申请日：2005-08-17

申请人： Hiroyuki Takahashi ,  Atsushi Nakagawa ,  Takuya Kera ,  Masaki Miyata ,  Yasunari Kawaguchi ,  Kouichi Gotou

发明人： Hiroyuki Takahashi ,  Atsushi Nakagawa ,  Takuya Kera ,  Masaki Miyata ,  Yasunari Kawaguchi ,  Kouichi Gotou

IPC分类号： G11C7/00

CPC分类号： G11C29/12015 ,  G11C11/401 ,  G11C11/406 ,  G11C29/14 ,  G11C2211/4061

摘要： Disclosed is a semiconductor memory device having memory cells that are in need of refresh for data retention, includes control circuits for necessarily generating the refresh immediately before the read/write operation, and for setting the latency to a first fixed value at all times, for the first mode during the testing, and for necessarily generating the refresh immediately after the read/write operation, and for setting the latency to a second fixed value at all times, for the second mode during the testing.

摘要翻译： 公开了一种具有需要刷新数据保持的存储单元的半导体存储器件，包括在读/写操作之前必须产生刷新的控制电路，并且始终将等待时间设置为第一固定值，以供 在测试期间的第一模式，并且用于在读/写操作之后立即产生刷新，并且用于在测试期间将延迟设置为始终为第二固定值。