Anti-fuse circuit and method of operation
    2.
    发明授权
    Anti-fuse circuit and method of operation 失效
    防熔丝电路及操作方法

    公开(公告)号:US06597234B2

    公开(公告)日:2003-07-22

    申请号:US10017429

    申请日:2001-12-14

    IPC分类号: H01H3776

    摘要: An anti-fuse useful in implementing redundancy in a memory utilizes a normal transistor characteristic that is generally considered undesirable in order to provide two easily detected states. The un-programmed state, which is the high impedance state, is achieved simply with a normal transistor in its non-conductive state. The programmed state, which is the low impedance state, is achieved by forcing a normal transistor to conduct current through its gate. This causes the gate dielectric to become permanently conductive. This programmed transistor then is conductive between its source and drain that is easily differentiated from the transistor that is held in its non-conductive state. The result is a fuse technology using an anti-fuse that provides for easily distinguishable programmed and un-programmed states achieved by electrical programming rather than by laser programming.

    摘要翻译: 用于实现存储器中冗余的反熔丝利用通常被认为是不期望的以提供两个容易检测状态的正常晶体管特性。 非编程状态,即高阻抗状态,简单地用非导通状态的正常晶体管实现。 通过强制正常晶体管将电流传导通过其栅极来实现低阻状态的编程状态。 这导致栅极电介质变得永久导电。 然后,该编程晶体管在其源极和漏极之间是导电的,其容易与保持在其非导通状态的晶体管区分开。 结果是采用了一种使用反熔丝的保险丝技术,可以通过电气编程而不是通过激光编程实现轻松区分编程和非编程状态。