Program decoder for shared contact eprom
US4237547A · kind A · utility
9Cited by
1References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 17, 1979 |
| Grant date | Dec 2, 1980 |
| Priority date | — |
| Expiry date | Sep 17, 1999 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C16/24
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
In a shared contact electrically programmable read only memory, decoding circuitry is provided to prevent unwanted device programming due to sneak paths to ground. A two input NAND gate is coupled between adjacent column select lines. If either of the adjacent column select lines are energized, a data line will be enabled. Thus, for each column line energized, only two data lines will be enabled and only one of these will carry a voltage for enabling a memory device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.