Patent 7746162 was granted and assigned to Infineon Technologies on June, 2010 by the United States Patent and Trademark Office.
A method for waking up a circuit, comprising charging a voltage line of the circuit with a constant wake-up current until the voltage line reaches a predetermined voltage. Also, an apparatus, comprising a circuit portion, a switch configured to selectively couple an input of the circuit portion to a supply voltage, a current source configured to generate a first current, and a control circuit configured to control a state of the switch depending on the first current.