Patent ID: 6566937
Filing Date: 2003-05-20
Classification: G11C

Abstract:
A fuse circuit comprising:a fuse for connecting a first node and a second node; a first switch being connected between said first node and a first power supply line, or turning on during a first period; a second switch being connected between said second node and a second power supply line, for turning off during said first period and turning on before and after said first period; a load element being connected between said first node and said second power supply line, to be conducted at least after said first period; a third switch being connected between said second node and a third node, for switching from a turned-on state to a turned-off state during said first period; and a holding circuit being connected to said third node, for holding a level of said third node and outputting the held level as a fuse signal indicating a blown-out state of said fuse.