Pumping circuit for outputting program voltage and program...

Details Pumping circuit for outputting program voltage and program... Pumping circuit for outputting program voltage and program...

2005-01-25

2005-01-25

Cunningham, Terry D. (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Specific identifiable device, circuit, or system

With specific source of supply or bias voltage

C327S537000, C363S059000

Reexamination Certificate

active

06847250

ABSTRACT:
The present invention relates to a pumping circuit. The pumping circuit comprises a first pumping block for pumping an input voltage, a first latch for latching the output of the first pumping block, a second pumping block for pumping the output of the first pumping block according to a control signal, a second latch for latching the output of the second pumping block, and a switching circuit for selectively outputting the outputs of the first and second latches according to the control signal. Thus, a program voltage and a program verify voltage of different levels are pumped. The ripple and active current can be reduced and the program efficiency can be increased.

REFERENCES:
patent: 5602794 (1997-02-01), Javanifard et al.
patent: 5767735 (1998-06-01), Javanifard et al.
patent: 5999040 (1999-12-01), Do et al.
patent: 6369642 (2002-04-01), Zeng

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