Miscellaneous active electrical nonlinear devices – circuits – and – Specific identifiable device – circuit – or system – With specific source of supply or bias voltage
Patent
1998-03-23
1999-09-14
Cunningham, Terry D.
Miscellaneous active electrical nonlinear devices, circuits, and
Specific identifiable device, circuit, or system
With specific source of supply or bias voltage
327537, G05F 110
Patent
active
059528729
ABSTRACT:
An input/output voltage detection type substrate voltage generation circuit that of effectively prevents the electric potential of the substrate from being increased by varying the driving capability of a substrate voltage generation circuit. The input/output voltage detection type substrate voltage generation circuit preferably varies the driving capability by detecting an input electric potential of a data input/output terminal. The circuit includes a variable period type oscillator for receiving first, second and third signals as inputs to varying periods of the oscillator and a charge pump for pumping an electric charge to the substrate in accordance with a driving signal output from the variable period type oscillator and based on the variable period of the oscillator.
REFERENCES:
patent: 5483486 (1996-01-01), Javanifard et al.
patent: 5672996 (1997-09-01), Pyeon
patent: 5673232 (1997-09-01), Furutani
patent: 5687128 (1997-11-01), Lee et al.
Cunningham Terry D.
Hasanzadah Maria
LG Semicon Co. Ltd.
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