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US 2026/0180320 A1Published application
Circuit structure and method with a resistor for reducing voltage at control node for device
AssigneeGlobalFoundries U.S. Inc.
InventorsAlain F. Loiseau, Nandha Kumar Subramani
Life of this patent
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Abstract
Embodiments of the disclosure provide a circuit structure and method with a resistor for reducing a discharged pad voltage. A structure of the disclosure includes a resistor having a first end connected to a pad and a second end opposite the first end. A trigger circuit is connected between the pad and ground. A discharge circuit is connected between the second end of the resistor and ground. The discharge circuit is connected to an output node of the trigger circuit.
Claims20
A structure comprising:
- a resistor having a first end connected to a pad and a second end opposite the first end;
- a trigger circuit connected between the pad and ground;
- and
- a discharge circuit connected between the second end of the resistor and ground, wherein the discharge circuit is connected to an output node of the trigger circuit.
1 more element
A structure comprising:
- a resistor having a first end coupled to an input/output (I/O) pad and a second end coupled to a device, wherein the resistor decreases a pad voltage received from the I/O pad at the first end to a intermediate voltage output from the second end;
- a trigger circuit coupled between the I/O pad and a ground pad, and configured to output a trigger voltage in response to detecting that the pad voltage on the I/O pad is above a predetermined operating voltage;
- and
- a discharge circuit coupled between the second end of the resistor and the ground pad and configured to receive the trigger voltage from the trigger circuit and, in response to the trigger voltage, discharge the intermediate voltage.
1 more element
A method comprising:
- decreasing, by a resistor, a pad voltage received at a first end from an input/output (I/O) pad and outputting, by the resistor, an intermediate volage lower than the pad voltage at a second end, wherein the second end of the resistor is coupled to an device;
- outputting, by a trigger circuit coupled between the I/O pad and a ground pad, a trigger voltage in response to the trigger circuit detecting that the pad voltage on the I/O pad is above a predetermined operating voltage;
- receiving, by a discharge circuit coupled between the second end of the resistor and the ground pad, the trigger voltage from the trigger circuit;
- and
- discharging, by the discharge circuit, the intermediate voltage.
2 more elements
Dependencies are inferred from the claim text.