| 摘要 |
PURPOSE:To reduce the size of a chip, by constituting a power feeding pattern by main line patterns extended from a bus line pattern into wiring regions between blocks and branch patterns extended to block feeding points from the main line patterns. CONSTITUTION:On a semiconductor chip 10 formed in a rectangular shape, blocks 14-1-14-9 are arranged. A rectangular bus line pattern 16 is formed so as to surround the blocks 14-1-14-9. The blocks 14-1 is constituted by cells 12-1 and 12-2. The other blocks 14-2-14-9 are similarly constituted. Power distributing patterns 18-1 and 18-2 of each block are not formed to be extended out of the region of the block but formed to power feeding points 22-1-22-4 at block- boundary positions. Therefore, even though blocks having different sizes are arranged depending on the functions, the layout of the blocks can be optimized and the chip size can be reduced. |
