Programmable logic device macrocell with an exclusive feedback and an exclusive external input line for a combinatorial mode and accommodating two separate programmable or planes
US5384500A · kind A · utility
20Cited by
72References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 22, 1993 |
| Grant date | Jan 24, 1995 |
| Priority date | — |
| Expiry date | Dec 22, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K19/17708
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A programmable logic device (PLD) with an output macrocell circuit is disclosed. Specifically, there is a macrocell having an exclusive logic signal feedback line and an exclusive external input signal line both feeding into the input of the PLD. Exactly, this PLD can disable the I/O pad and still have an internal feedback to its logic circuitry.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.