Semiconductor integrated circuit that handles the input/output of a signal with an external circuit
AssigneeSeiko Epson Corporation
InventorHiroshi Seki
Life of this patent
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Abstract
A semiconductor integrated circuit that handles the input/output of a signal with an external circuit. The circuit includes a transistor transmitting a signal between the external circuit and an internal circuit with a drain/source therebetween at a given gate voltage. A first gate voltage supply circuit supplies a voltage at the gate of the transistor when supplied with a first power voltage at a first level of a control signal. A second gate voltage supply circuit supplies a voltage at the gate of the transistor when supplied with a second power voltage that is lower than the first power voltage at a second level of a control signal.
Claims3
A semiconductor integrated circuit, comprising:
- a transistor transmitting a signal between an external circuit and an internal circuit through a drain/source when a given gate voltage is supplied;
- a first gate voltage supply circuit supplying a voltage at a gate of the transistor when supplied with a first power voltage at a first level of a control signal;
- and
- a second gate voltage supply circuit supplying the voltage at the gate of the transistor when supplied with a second power voltage which is lower than the first power voltage at a second level of the control signal;
- wherein the semiconductor integrated circuit handles an input/output of a signal with an external circuit.
Dependencies are inferred from the claim text.