Activation of wordline decoders to transfer a high voltage supply
US6359824B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 9, 2000 |
| Grant date | Mar 19, 2002 |
| Priority date | — |
| Expiry date | Jun 9, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C8/08
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The present invention discloses a method and system for activating a plurality of wordline decoder circuits to transfer a predetermined high voltage to a plurality of wordlines during a test mode in a memory device. A plurality of wordline voltage supply circuits supply voltage for the wordlines. During operation, when the memory device is placed in a test mode requiring application of the predetermined high voltage to the wordlines, the wordline decoder circuits are activated. In addition, a first predetermined voltage that is approximately zero volts is supplied by the wordline voltage supply circuits to the wordline decoder circuits for a first predetermined amount of time. Once the wordline decoder circuits decode the respective wordlines, the first predetermined voltage is transferred to the respective wordlines. The wordline voltage supply circuits then supply a second predetermined voltage that is transferred to the respective wordlines by the still activated wordline decoder circuits for a second predetermined amount of time. Finally, the wordline voltage supply circuits supply a predetermined high voltage that is transferred to the respective wordlines by the still activat…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.