Patent ID: 6751148
Filing Date: 2004-06-15
Classification: G11C

Abstract:
A circuit for generating a control signal, the circuit comprising: a first transistor for receiving an input signal at a gate thereof, the first transistor being connected to a first voltage;a second transistor for receiving the input signal at a gate thereof, the second transistor being connected to a second voltage; a make-link type fuse serially linked between the first transistor and the second transistor by application of energy; and a sensing circuit, connected to the make-link type fuse, for sensing whether the make-link type fuse is linked or not between the first and second transistors and for outputting a control signal based on the sensed result and the input signal, wherein the first transistor and the second transistor are complementarily connected to turn one of the first and second transistors in response to the input signal, thereby preventing current from flowing between the first and second transistors when the make-link type fuse is linked between the first transistor and the second transistor, wherein the sensing circuit comprises: a first inverter connected to a node connecting to the make-link type fuse: a third transistor having a gate, a first end, and a second end, wherein the gate receives an output signal of the first inverter, the first end is connected to the node and the second end is connected to the first voltage; and a second inverter connected to the first inverter, for outputting the control signal, wherein the first transistor and the third transistor are PMOS transistors, and the second transistor is an NMOS transistor.