Low gate-leakage virtual rail circuit

Active solid-state devices (e.g. – transistors – solid-state diode – Gate arrays – With particular power supply distribution means

Reexamination Certificate

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Details

C257S208000, C257S369000, C257S394000

Reexamination Certificate

active

06872991

ABSTRACT:
Circuits within a logic domain use partitioned power supply buses. Selected of the power supply buses are coupled to the power supply voltage potentials with electronic switches with gradated conductivity and leakage current. When the circuits are actively switching during a logic operation, the power supply voltage potentials are coupled to the buses with maximum conductivity. At predetermined times later, selected of the electronic switches are switched OFF to reduce leakage current. Lower conductivity and thus lower leakage switches remain ON to ensure corresponding logic states are maintained during a controlled low leakage time period. Various logic configurations are used to switch OFF high leakage devices.

REFERENCES:
patent: 6400540 (2002-06-01), Chang
patent: 6653751 (2003-11-01), Teh Lo
patent: 6657836 (2003-12-01), He et al.
patent: 20030201457 (2003-10-01), Lin et al.

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