Patent ID: 6452441
Filing Date: 2002-09-17
Classification: G11C

Abstract:
An integrated circuit comprising:an input configured to receive an external supply voltage; a pass transistor which selectively couples the input to an internal supply node, the pass transistor having a reduced threshold voltage not greater than 1.0 V; operating circuitry coupled to the internal supply node; an enable signal input configured to receive an external enable signal that is utilized to trigger a reduction of standby current in the integrated circuit; and a charge pump coupled to the pass transistor for providing a bias voltage to the pass transistor, the charge pump coupled to the enable signal input to receive the external enable signal, in response to the charge pump receiving the external enable signal, the charge pump is configured to fully turn off the pass transistor which isolates the internal supply node from the external supply voltage and reduces standby current of the integrated circuit.