Patent ID: 7602663
Filing Date: 2009-10-13
Classification: G11C

Abstract:
1. An apparatus, comprising: a plurality of fuse cells arranged in an array, one or more fuse cells including a pair of fuse devices to output a pair of voltages, respectively, the pair of fuse devices being redundantly programmed; a sense amplifier coupled to the plurality of fuse cells to read the pair of voltage outputs from the plurality of fuse cells, respectively; a comparator circuit coupled to the sense amplifier to compare the pair of voltage outputs for each of the plurality of fuse cells and to output the compared result; a storage element associated with each fuse cell, the storage element to store the compared result for each fuse cell; and a control circuit coupled to the plurality of fuse cells, the control circuit to output asynchronous read signals to each fuse cell to control the reading of each respective fuse cell in an asynchronous manner.