Pumping voltage generating circuit in nonvolatile...

Details Pumping voltage generating circuit in nonvolatile... Pumping voltage generating circuit in nonvolatile...

2007-10-23

2007-10-23

Yoha, Connie C. (Department: 2827)

Static information storage and retrieval

Floating gate

Particular biasing

C365S185230, C365S189090

Reexamination Certificate

active

11205988

ABSTRACT:
Disclosed is a pumping voltage generating circuit in a nonvolatile semiconductor memory device. The present pumping voltage generating circuit begins a pumping operation for a wordline voltage in response to an accelerating start signal activated from a supply of an external program voltage, rather than a pumping enable signal activated from a program command. According to the pumping voltage generating circuit, the wordline voltage reaches a target voltage earlier, remarkably enhancing an overall operation speed in a nonvolatile semiconductor memory device.

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patent: 7031202 (2006-04-01), Yoon et al.
patent: 2006/0087886 (2006-04-01), Cho et al.
patent: 8-255493 (1996-10-01), None
patent: 2002-236612 (2002-08-01), None
patent: 2001-0081243 (2001-08-01), None
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