High voltage generator and word line driving high voltage...

Details High voltage generator and word line driving high voltage... High voltage generator and word line driving high voltage...

2010-03-16

2011-10-11

Donovan, Lincoln (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Specific identifiable device, circuit, or system

With specific source of supply or bias voltage

C363S059000, C363S060000

Reexamination Certificate

active

08035441

ABSTRACT:
A high voltage generator includes: a detection unit for comparing a reference voltage with a high voltage and detecting a voltage level of the high voltage; an oscillator selection unit for generating a first control signal and a second control signal in response to an output signal of the detection unit and a selection signal corresponding to a data operation mode; an oscillator for generating clock signals having different frequencies in response to the first control signal and the second control signal; and a pumping unit for generating the high voltage by performing a charge pumping operation in response to the clock signals.

REFERENCES:
patent: 5999099 (1999-12-01), Stobbe
patent: 6020781 (2000-02-01), Fujioka
patent: 6275096 (2001-08-01), Hsu et al.
patent: 6278317 (2001-08-01), Hsu et al.
patent: 6285622 (2001-09-01), Haraguchi et al.
patent: 7091769 (2006-08-01), Kwon et al.
patent: 7253676 (2007-08-01), Fukuda et al.
patent: 2004/0046604 (2004-03-01), Kim

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