Substrate voltage generation circuit for semiconductor device

Details Substrate voltage generation circuit for semiconductor device Substrate voltage generation circuit for semiconductor device

1997-09-18

2000-01-04

Callahan, Timothy P.

Miscellaneous active electrical nonlinear devices, circuits, and

Specific identifiable device, circuit, or system

With specific source of supply or bias voltage

327101, 327113, G05F 110

Patent

active

060114266

ABSTRACT:
A substrate voltage generation circuit for a semiconductor device which is capable of decreasing the amount of current consumed by a charge pump. The circuit includes a burn-in detection unit for differently varying logical states of output signals .phi. in a normal mode and a burn-in mode, respectively, a mode judgement unit for outputting first and second voltages in the normal mode and the burn-in mode in accordance with an output signal from the burn-in detection unit, an oscillation unit for outputting voltages OSCV having different oscillation frequencies in accordance with the first and second voltages, and a charge pump for pumping an output voltage OSCV from the oscillation unit and generating a substrate voltage.

REFERENCES:
patent: 5528538 (1996-06-01), Sakuta et al.

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