Very fine-grain voltage island integrated circuit

Details Very fine-grain voltage island integrated circuit Very fine-grain voltage island integrated circuit

2007-07-24

2007-07-24

Nguyen, Cuong (Department: 2811)

Active solid-state devices (e.g., transistors, solid-state diode

Gate arrays

With particular signal path connections

C257S207000, C257S758000

Reexamination Certificate

active

11029267

ABSTRACT:
Methods of supplying voltages to integrated circuits are provided. A high voltage VddH and/or a low voltage VddL can be supplied to a filler cell and routed to other cells. Each of the VddH and VddL is carried by one of a first voltage supply wire and a second voltage supply wire. A voltage routing wire routes desired voltage(s) to a filler cell. The first and the second voltage supply wires are preferably formed parallel to the voltage routing wire with their edges substantially aligned to the edges of the voltage routing wire. Vias are made to route the desire voltage. Also preferably, the first voltage supply wire is an M1wire formed outside the filler cell while the second voltage supply wire is an M2wire formed inside the filler cell.

REFERENCES:
patent: 5965922 (1999-10-01), Matsui
patent: 7023058 (2006-04-01), Kanno et al.
Kakerow, R., “Low Power Design Methodologies for Mobile Communication,” Proceedings of the 2002 IEEE International Conference on Computer Design: VLSI Computers and Processors, 2002, pp. 1-6.
Puri, R., et al., “Pushing ASIC Performance in a Power Envelope,” DAC, Jun. 2-6, 2003, Anaheim, CA, pp. 788-793.
Usami, K., et al., “Low-power Design Methodology and Applications utilizing Dual Supply Voltages,” Proceedings of the Design Automation Conference, IEEE, Jan. 2000, pp. 123-128.

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