Patent ID: 8525578
Filing Date: 2013-09-03
Classification: G11C,H01L

Abstract:
1. A semiconductor device comprising: a first circuit; and a plurality of optical fuses that store adjustment data to adjust characteristics of the first circuit, wherein the optical fuses are grouped into at least first and second ladder fuses, the optical fuses belonging to the first ladder fuse are arranged at each intersection of a first Y-coordinate with a plurality of X-coordinates, the optical fuses belonging to the second ladder fuse are arranged at each intersection of a second Y-coordinate with a plurality of X-coordinates, when the adjustment data is within a first range, the adjustment data is represented by an output signal of the first ladder fuse in which at least one of the optical fuses is trimmed and an output signal of the second ladder fuse in which at least one of the optical fuses is trimmed, and when the adjustment data is within a second range, the adjustment data is represented by the output signal of the first ladder fuse in which none of the optical fuses is trimmed and the output signal of the second ladder fuse in which at least one of the optical fuses is trimmed.