Semiconductor integrated circuit macro cells with wide lines
US5444276A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 14, 1993 |
| Grant date | Aug 22, 1995 |
| Priority date | — |
| Expiry date | Dec 14, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10D84/998
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).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.