Semiconductor integrated circuit with leakage current...

Electronic digital logic circuitry – Significant integrated structure – layout – or layout...

Reexamination Certificate

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C326S083000, C327S544000

Reexamination Certificate

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07741878

ABSTRACT:
In a semiconductor integrated circuit, a cell arrangement area is provided on a semiconductor substrate to allow a plurality of basis cells to be arranged. A basic power supply line is provided in an upper layer than the cell arrangement area to supply a power. A switch cell is configured to control the power supply from the basic power supply line to an inside of the cell arrangement area. An always operating cell is arranged in the cell arrangement area adjacently to the switch cell, and is configured to receive the power from the switch cell even when the switch cell stops the power supply to the cell arrangement area.

REFERENCES:
patent: 5614847 (1997-03-01), Kawahara et al.
patent: 6049245 (2000-04-01), Son et al.
patent: 2004-186666 (2004-07-01), None

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