Patent ID: 6411157
Filing Date: 2002-06-25
Classification: G11C,H02M

Abstract:
A voltage control system for an integrated circuit comprising:voltage supply generator providing a voltage source for internal, on-chip use, said voltage supply generator responsive to a low power enable signal for placing said system in a low power mode, and, said voltage supply generator responsive to an active enable signal for placing said system in an active mode; and, a limiter device for intermittently sampling an internal voltage supply level of said voltage source during said low power mode, and continuously sampling said internal voltage supply level during said active mode, and for determining whether a voltage result of said sampling falls below a predetermined voltage reference level, and, when said voltage result of said sampling falls below said predetermined voltage reference level, said limiter device activating said voltage supply generator for increasing said internal voltage supply level, and deactivating said voltage supply generator when said voltage result of said sampling is restored to said predetermined voltage reference level, whereby internally generated voltage levels are maintained throughout system low power and active modes of operation.