Semi-custom LSI having input/output cells
US4947233A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 26, 1987 |
| Grant date | Aug 7, 1990 |
| Priority date | — |
| Expiry date | Oct 26, 2007 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01L2924/14
- WIPO fieldSemiconductors
- WIPO sectorElectrical engineering
Abstract
A semi-custom LSI formed on a semiconductor chip includes a plurality of basic cells formed in a central portion of the semiconductor chip, a plurality of input/output cells formed in a peripheral portion of the semiconductor chip, a plurality of bonding pad formed on the input/output cells, and a wiring layer wiring circuit elements in the basic cells and the input/output cells to form a functional circuit and buffers and connecting between the functional circuit, the buffers and the bonding pads, at least one input/output cell having two bonding pads thereon, and one of the two bonding pads being located near an edge of the semiconductor chip, compared to the other.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.