Patent ID: 8803590
Filing Date: 2014-08-12
Classification: H01H

Abstract:
1. A fuse circuit comprising a fuse unit cell, wherein the fuse unit cell comprises: first and second fuses; a fuse controller for programming the fuse unit cell, the fuse controller receiving fuse programming control input signals for programming the fuse unit cell, the fuse controller programs the fuse unit cell by blowing one of the first and second fuses while the other of the first and second fuses remain unblown; wherein the blown fuse always exists in a sensing path and the blown fuse produces a high resistance in the sensing path thereby resulting in a small sensing current; and wherein when the first fuse is blown and the second fuse is unblown, the fuse unit cell represents a first state; and when the first fuse is unblown and the second fuse is blown, the fuse unit cell represents a second state.