Miscellaneous active electrical nonlinear devices – circuits – and – Specific identifiable device – circuit – or system – With specific source of supply or bias voltage
Patent
1998-03-20
1999-08-24
Callahan, Timothy P.
Miscellaneous active electrical nonlinear devices, circuits, and
Specific identifiable device, circuit, or system
With specific source of supply or bias voltage
327538, 327540, 323313, H02J 338
Patent
active
059429330
ABSTRACT:
An internal voltage generation circuit for a semiconductor device includes a voltage generating unit for converting the level of an external voltage in accordance with a reference voltage applied thereto, a driving unit for receiving an output signal of the voltage generating unit and an internal voltage fed back thereto and outputting a predetermined level of the internal voltage, a region detecting unit for detecting a timing point when the external voltage is lowered below the predetermined level thereof, and outputting a signal corresponding thereto, and a switching unit for supplying the external voltage to the internal voltage or interrupting the external voltage in accordance with the output signal of the region detecting unit. The circuit prevents an error operation which may occur in the semiconductor device, when the level of the external voltage is lowered.
REFERENCES:
patent: 5132565 (1992-07-01), Kuzumoto
patent: 5386138 (1995-01-01), Wang
patent: 5589762 (1996-12-01), Iannuzo
patent: 5703475 (1997-12-01), Lee et al.
patent: 5771196 (1998-06-01), Yang
patent: 5786711 (1998-07-01), Choi
Callahan Timothy P.
LG Semicon Co. Ltd.
Luu An T.
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