Programmable array logic with shared product terms
US4644191A · kind A · utility
16Cited by
6References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 19, 1985 |
| Grant date | Feb 17, 1987 |
| Priority date | — |
| Expiry date | Sep 19, 2005 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K19/17708
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A programmable logic circuit comprises a Programmable Array Logic (PAL) circuit in which individual product terms may be shared simultaneously by one or more of the circuit outputs. The product terms are selectively connected to the circuit outputs by programmable elements (such as a fusible link) to increase design flexibility. Isolating devices are provided in series with the programmable elements to allow for the simultaneous product term sharing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.