Invention Grant
US08848475B2 Fuse circuit, fuse array, semiconductor memory device and method of manufacturing semiconductor device 有权
保险丝电路,保险丝阵列,半导体存储器件及制造半导体器件的方法

Fuse circuit, fuse array, semiconductor memory device and method of manufacturing semiconductor device
Abstract:
A fuse circuit includes a program unit and a sensing unit. The program unit is programmed in response to a program signal and outputs a program output signal in response to a sensing enable signal. The sensing unit outputs a sensing output signal based on the program output signal and the sensing output signal indicates whether the program unit is programmed or not. The program unit includes an anti-fuse cell, a selection transistor, a program transistor and a sensing transistor. The anti-fuse cell includes at least two anti-fuse elements which are connected in parallel and are respectively broken down at different levels of a program voltage.
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