Variable stage charge pump

Details Variable stage charge pump Variable stage charge pump

1995-09-29

1997-02-11

Nguyen, Viet Q.

Static information storage and retrieval

Powering

327148, 327157, 257299, 36518909, H03L 7089

Patent

active

056027940

ABSTRACT:
A variable stage charge pump for a flash memory device is described. The variable stage charge pump includes a first charge pump and a second charge pump. A first switch couples an output of the first charge pump to an input of the second charge pump. A second switch couples an input of the first charge pump to the input of the second charge pump. The first and second charge pumps are series-coupled to a common output node when the first switch is in a first position and the second switch is in a second position, wherein the first and second charge pumps are parallel-coupled to the common output node when the first switch is in the second position and the second switch is in the first position.

REFERENCES:
patent: 4807104 (1989-02-01), Floyd et al.
patent: 5297104 (1994-03-01), Nakashima
patent: 5406517 (1995-04-01), Chang et al.
patent: 5477499 (1995-12-01), Van Buskirk et al.
patent: 5483486 (1996-01-01), Javanifard et al.
patent: 5508660 (1996-04-01), Gersbach et al.

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