Circuit and method of driving a word line by changing the capacitance of a clamp capacitor to compensate for a fluctuation of a power supply voltage level
US7394701B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 15, 2006 |
| Grant date | Jul 1, 2008 |
| Priority date | — |
| Expiry date | Dec 29, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C5/143
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A word line driving circuit includes a read voltage generator and a word line driver. The read voltage generator precharges a clamp capacitor with a power supply voltage to stably generate a read voltage in response to a read command. A capacitance of the clamp capacitor is varied to compensate for a fluctuation of a power supply voltage level. The word line driver distributes electric charges precharged in the clamp capacitor to a word line in response to a word line selecting signal. Therefore, the word line driving circuit reduces unnecessary power consumption in a standby mode by operating the word line rapidly with charge sharing in a read mode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.