Patent ID: 6919754
Filing Date: 2005-07-19
Classification: G11C

Abstract:
1. A fuse detection circuit comprising: a first PMOS transistor (P a fuse mounting section having one end a connected to the first node and the other end b connected to a drain of a first NMOS transistor (N said first NMOS transistor (N a second PMOS transistor (P a reference resistance having one end connected to the second node and the other end connected to a drain of a second NMOS transistor (N said second NMOS transistor (N a first inverter circuit comprising a PMOS transistor (P a second inverter circuit comprising a PMOS transistor (P a third NMOS transistor (N wherein the control signal is set to a predetermined level in an initial state to precharge the first and second nodes, and thereafter a molten state of a fuse mounted to said fuse mounting section is detected in accordance with a potential level of the second node at a change in the level of the control signal, and an output of the first inverter circuit is coupled to the second node, and an output of the second inverter circuit is coupled to the first node.