Fail-safe I/O to achieve ultra low system power

The disclosure provides an input/output (IO) circuit powered by an input/output (IO) supply voltage. The IO circuit includes a cutoff circuit that receives a first invert signal, the IO supply voltage, a bias voltage and a pad voltage. An output stage is coupled to the cutoff circuit. The output sta...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: Kothamasu Siva Srinivas, Vyavahare Prajkta, Chauhan Rajat
Format: Patent
Sprache:eng
Schlagworte:
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Beschreibung
Zusammenfassung:The disclosure provides an input/output (IO) circuit powered by an input/output (IO) supply voltage. The IO circuit includes a cutoff circuit that receives a first invert signal, the IO supply voltage, a bias voltage and a pad voltage. An output stage is coupled to the cutoff circuit. The output stage receives a first signal, a second signal and the bias voltage. A pad is coupled to the output stage, and a voltage generated at the pad is the pad voltage. The cutoff circuit and the output stage maintain the pad voltage at logic high when the IO supply voltage transition below a defined threshold.