Patent ID: 7830736
Filing Date: 2010-11-09
Classification: G11C

Abstract:
1. A semiconductor integrated circuit device comprising: a first fuse circuit including a first fuse element and a first write transistor which has a current path with one end connected to one end of the first fuse element; a second fuse circuit including a second fuse element and a second write transistor which has a current path with one end connected to one end of the second fuse element, the second fuse circuit being configured such that a resistance value of the second fuse element is greater than a resistance value of the first fuse element and thereby a resistance value of the second fuse circuit is greater than a resistance value of the first fuse circuit; and a control signal generating circuit which sends a first control signal to a control terminal of the first write transistor and executes program such that the resistance value of the first fuse circuit becomes greater than the resistance value of the second fuse circuit, and sends a second control signal to a control terminal of the second write transistor and executes reprogram such that the resistance value of the second fuse circuit becomes greater than the resistance value of the first fuse circuit.