Semiconductor integrated circuit macro cells with wide lines

Details Semiconductor integrated circuit macro cells with wide lines Semiconductor integrated circuit macro cells with wide lines

1993-12-14

1995-08-22

Limanek, Robert P.

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

Gate arrays

With particular power supply distribution means

257211, 257758, H01L 2702

Patent

active

054442761

ABSTRACT:
In order to lay out a driver circuit having high drivability without increasing a semiconductor chip area, a macro cell (22) such as a clock driver having a large fan-out is arranged under a feeder line (20). It is possible to feed the macro cell (22) from the feeder line (20), which is a second layer aluminum wire, in a short distance. An input signal line (23) and an output signal line (24) which are connected to input and output pins of the macro cell (22) are provided in positions not to be in contact with the feeder line (20). Since the macro cell (22) is arranged in a portion of an internal region which is located under the feeder line (20), it is possible to suppress increase of the layout area as well as electromigration caused by feeding to the macro cell (22).

REFERENCES:
patent: 4989062 (1991-01-01), Takahashi et al.
patent: 5095352 (1992-03-01), Noda et al.
patent: 5119169 (1992-06-01), Kozono et al.
patent: 5237184 (1993-08-01), Yonemaru et al.
patent: 5355004 (1994-10-01), Saitoh

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