发明授权
- 专利标题: Fuse repair circuit for semiconductor memory circuit
- 专利标题(中): 半导体存储电路保险丝修复电路
-
申请号: US247523申请日: 1999-02-10
-
公开(公告)号: US6111798A公开(公告)日: 2000-08-29
- 发明人: Joo Sang Lee
- 申请人: Joo Sang Lee
- 申请人地址: KRX Cheongju
- 专利权人: LG Semicon Co., Ltd.
- 当前专利权人: LG Semicon Co., Ltd.
- 当前专利权人地址: KRX Cheongju
- 优先权: KRX98-3986 19981102
- 主分类号: G11C29/00
- IPC分类号: G11C29/00 ; G11C7/00
摘要:
A fuse repair circuit for a semiconductor memory device includes a cell array provided with a row redundancy and a column redundancy and a fuse block for driving the row redundancy during a RAS cycle and driving the column redundancy during a CAS cycle, wherein the fuse block consists of an address input unit for selectively outputting a row address or a column address in accordance with switching signals, a plurality of fuse units, wherein redundancy information of a defective cell is programmed, for comparing an inputted address with the programmed redundancy information, and a redundancy driving unit for outputting a matching signal for driving the row redundancy or the column redundancy when the inputted address and the programmed redundancy information are identical.
公开/授权文献
- US5424093A Method of manufacturing electronic elements 公开/授权日:1995-06-13
信息查询