Integrated circuit including cells with different heights and method of designing the same
AssigneeSamsung Electronics Co., Ltd.
InventorBonghyun Lee
Life of this patent
Estimating the term…
Abstract
An IC includes: a plurality of first cells placed in a series of first rows extending in a first horizontal direction and each having a first height; and a plurality of second cells placed in a series of second rows extending in the first horizontal direction and each having a second height different from the first height, wherein a total height of the series of first rows corresponds to a multiple of a height of a first multi-height cell with a maximum height among the plurality of first cells, and a total height of the series of second rows corresponds to a multiple of a height of a second multi-height cell with a maximum height among the plurality of second cells.
Claims20
An integrated circuit (IC) comprising:
- a plurality of first cells placed in a series of first rows, the series of first rows extending in a first horizontal direction and each first row of the series of first rows having a first height;
- and
- a plurality of second cells placed in a series of second rows, the series of second rows extending in the first horizontal direction and each second row of the series of second rows having a second height different from the first height,
- wherein a sum of heights of all first rows of the series of first rows corresponds to a multiple of a height of a first multi-height cell that has a maximum height among the plurality of first cells.
An integrated circuit (IC) comprising:
- a series of first power rails extending in a first horizontal direction in parallel to each other with a first pitch;
- a plurality of first cells each configured to receive a first supply voltage or a second supply voltage from at least one power rail of the series of first power rails;
- a series of second power rails extending in the first horizontal direction in parallel to each other with a second pitch different from the first pitch;
- and
- a plurality of second cells each configured to receive the first supply voltage or the second supply voltage from at least one power rail of the series of second power rails,
- wherein a pitch between outer first power rails among the series of first power rails corresponds to a multiple of a height of a first multi-height cell that has a maximum height among the plurality of first cells.
A method, performed by at least one processor configured to execute a series of instructions, of designing an integrated circuit (IC), the method comprising:
- obtaining input data defining cells;
- extracting, from the input data, a plurality of first cells with a height corresponding to a multiple of a first height;
- detecting a first multi-height cell with a maximum height among the plurality of first cells;
- determining a row count of a series of first rows each having the first height, based on the maximum height of the first multi-height cell;
- placing at least some of the plurality of first cells in the series of first rows;
- and
- generating output data defining the placed cells.
Dependencies are inferred from the claim text.