发明申请
- 专利标题: APPARATUS AND METHOD FOR PROVIDING A REPROGRAMMABLE ELECTRICALLY PROGRAMMABLE FUSE
- 专利标题(中): 提供可编程可编程保险丝的装置和方法
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申请号: US11246586申请日: 2005-10-07
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公开(公告)号: US20070081406A1公开(公告)日: 2007-04-12
- 发明人: David Boerstler , Eskinder Hailu , Subramanian Iyer , Jieming Qi
- 申请人: David Boerstler , Eskinder Hailu , Subramanian Iyer , Jieming Qi
- 主分类号: G11C17/18
- IPC分类号: G11C17/18
摘要:
An apparatus and method for providing a reprogrammable electrically programmable fuse (eFuse) are provided. With the apparatus and method, a pair of eFuses are provided coupled to programming current sources and sensing current sources. When the pair of eFuses is to be programmed, a first programming current is applied to a first eFuse to thereby increase the resistance of the first eFuse by an incremental amount. When the pair of eFuses is to be returned to an unprogrammed state, a second programming current source is applied to a second eFuse to thereby increase a resistance of the second eFuse to be greater than the resistance of the first eFuse. When the sensing current is applied to the eFuses, a difference in the resulting voltages across the eFuses is identified and used to indicate whether the reprogrammable eFuse is in a programmed state or unprogrammed state.
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