Integrated circuit operable in a standby mode

Details Integrated circuit operable in a standby mode Integrated circuit operable in a standby mode

2009-06-30

2011-11-08

Donovan, Lincoln (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Particular stable state circuit

C327S544000, C323S901000, C307S130000, C365S229000

Reexamination Certificate

active

08054120

ABSTRACT:
An integrated circuit, comprises a wakeup terminal; a supply voltage terminal configured to receive a supply voltage; and a power control circuit. The power control circuit comprises an enable circuit coupled to the wakeup terminal and configured to generate a voltage monitoring enable signal as a response to a wakeup signal received at the wakeup terminal, and a voltage monitoring circuit for generating a supply voltage level indication signal. The voltage monitoring circuit is coupled to the supply voltage terminal and comprises an operation switch controlled by the voltage monitoring enable signal. The voltage monitoring circuit is configured to determine if the supply voltage is above a threshold voltage and set the supply voltage level indication signal accordingly. The integrated circuit further comprises processing circuitry, with the supply voltage level indication signal controlling the switching between a normal operation state and a standby state of the processing circuitry.

REFERENCES:
patent: 6021082 (2000-02-01), Shirai
patent: 6954103 (2005-10-01), Yamauchi et al.
patent: 7659773 (2010-02-01), Choi et al.
patent: 7750729 (2010-07-01), Lee et al.
patent: 2005/0232053 (2005-10-01), Azuma et al.

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