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US 2003/0112057 A1Published application
Semiconductor device
AssigneeMitsubishi Denki Kabushiki Kaisha
InventorMasaaki Mihara
Life of this patent
Estimating the term…
Abstract
Even in the case where the reference voltage of a reference-voltage generating circuit is adjusted by fuses, a number of fuses are required to be disconnected, and the area of fuse circuits tends to increase for fine adjustment. Therefore, by dividing control signals into one part that are predetermined by fixed wiring and another part that is adjustable by fuse circuits, time required for disconnecting fuses is minimized and fine adjustment is made possible.
Claims9
A semiconductor device which comprises:
- a control circuit that is connected to wiring lines that supply a predetermined voltage and outputs a first control signal depending on said predetermined voltage and a second control signal that can be set depending on whether a fuse is disconnected or not;
- a divided-voltage generating circuit that is connected between predetermined first and second potential points and outputs voltages between the two potentials;
- and
- a selecting circuit that selects as a reference voltage one of the voltages output from said divided-voltage generating circuit, depending on said control signals.
1 more element
Dependencies are inferred from the claim text.