Two-terminal electrically-reprogrammable programmable logic element
US5925904A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 26, 1997 |
| Grant date | Jul 20, 1999 |
| Priority date | — |
| Expiry date | Mar 26, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10D30/6891
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A non-volatile two terminal programmable logic element and associated methods for charging and discharging are disclosed. The logic element includes one input and one output terminal, a first capacitor region, a second capacitor region, and a floating gate (transistor-type) structure. The first capacitor region does not permit tunneling. The second capacitor region permits tunneling between its respective electrodes when a predetermined voltage, substantially higher than the normal operating voltage is applied. The source is connected to the input terminal and one electrode of the first capacitor region. The drain is connected to the output terminal and one electrode of the second capacitor region. The floating gate is connected to the other electrodes of the first and second capacitor regions. A programmable logic device constructed from these elements and associated methods of programming and erasing such a device are also shown.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.