Patent ID: 6774667
Filing Date: 2004-08-10
Classification: H03K

Abstract:
A programmable gate array comprising:a plurality of logic modules, each logic module having at least one output coupled to an isolation transistor, each isolation transistor in each of said plurality of logic modules having a gate; a first charge pump having a charge-pump enable input, a pump-voltage output coupled to said gates of each isolation transistor in each of said plurality of logic modules, and a pump-voltage-output-grounding input; a switching transistor coupled between said pump-voltage output of said first charge pump and an input/output pad of the programmable gate array, said switching transistor including a switching transistor gate; and a second charge pump having a charge pump enable input, a pump-voltage output coupled to said gate of said switching transistor, and a pump-voltage-output-grounding input; and a control circuit coupled to said charge pump enable inputs and said pump-voltage-output-grounding inputs of said first and second charge pumps.