Semiconductor integrated circuit device and layout method using primitive cells having indentical core designs
1. Field of the Invention The present invention provides a semiconductor integrated circuit device, a layout design method and apparatus thereof which enable to select an arbitrary number of grids in primitive cells and minimize the layout area. Each primitive cell is constituted by a core portion h...
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| Main Authors | , |
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| Format | Patent |
| Language | English |
| Published |
28.01.2003
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| Online Access | Get full text |
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| Summary: | 1. Field of the Invention
The present invention provides a semiconductor integrated circuit device, a layout design method and apparatus thereof which enable to select an arbitrary number of grids in primitive cells and minimize the layout area. Each primitive cell is constituted by a core portion having a circuit for realizing a function inherent to the primitive cell and a power supply wiring portion for electrical connection between the core portion and a power supply wiring and electrical connection between cores of different primitive cells. A primitive cell small group is prepared from a plurality of primitive cells having an identical core portion and different numbers of allocatable signal lines in the power supply wiring portion, so that a primitive cell having an appropriate number of signal lines as the power supply wiring portion is selected for layout. |
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