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US 6,472,926 B2Granted
Internal voltage generation circuit
AssigneesMitsubishi Denki Kabushiki Kaisha, Mitsubishi Electric Engineering Company Limited
InventorsYasuhiko Taito, Akira Yamazaki, Fukashi Morishita, Mako Kobayashi, Mihoko Akiyama, Nobuyuki Fujii
Life of this patent
Estimating the term…
Abstract
A plurality of pump modules are provided, the number of pump modules to be activated is changed depending on a mode of operation, and the number of pump modules to be activated is also adjusted with the specification of interest taken into consideration. There can be provided an internal voltage generation circuit occupying a small area and readily capable of accommodating a change in specification.
Claims18
An internal voltage generation circuit comprising:
- a plurality of pump modules, coupled commonly and in parallel to an internal voltage transmission line, each for generating an internal voltage on said internal voltage transmission line through a pumping operation when activated;
- and
- control circuitry coupled with said plurality of pump modules and including a setting circuit for setting a number of one or more pump modules to be activated at a time in said plurality of pump modules, for generating a control signal for selectively activating the one or more pump modules by the number set by said setting circuit for transmission to the pump modules.
Dependencies are inferred from the claim text.