Pull up circuit for digit lines in a semiconductor memory
US4924442A · kind A · utility
8Cited by
3References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 30, 1988 |
| Grant date | May 8, 1990 |
| Priority date | — |
| Expiry date | Sep 30, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C11/4094
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A voltage sensing circuit is used to rapidly pull up a high potential node of a reference array to a value of a high potential source reduced by a threshold voltage (V.sub.CC -V.sub.T). During an enable cycle, the high potential node is precharged to a potential of V.sub.CC -V.sub.T, which turns on a transistor gated to the V.sub.CC potential. This pulls the high potential node as rapidly as possible to a high level in order to speed up the sensing process. A potential maintenance circuit provides sufficient current from the high potential source to maintain a desired potential at the high potential node.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.