Integrated circuit programmable cross-point connection technique
US4670749A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 13, 1984 |
| Grant date | Jun 2, 1987 |
| Priority date | — |
| Expiry date | Apr 13, 2004 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10D84/90
- WIPO fieldSemiconductors
- WIPO sectorElectrical engineering
Abstract
A technique for programming connections of conductors that is particularly adapted to be implemented as part of an integrated circuit so that a number of connections internal of the circuit can be made from outside the circuit in order to customize it after fabrication. A specific arrangement of five switching transistors is particularly advantageous for each cross-point of two conductors to be connected together in one of many possible ways. The desired switching arrangement at each cross-point may be programmed by use of the same conductors being interconnected to carry control signals from outside the circuit to a memory associated with each cross-point switching circuit. While these memories are being programmed, each cross-point is temporarily forced to a desired state for communicating the control signals from outside the circuit to the memories.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.