Semiconductor integrated circuit device with adjustable high vol

Details Semiconductor integrated circuit device with adjustable high vol Semiconductor integrated circuit device with adjustable high vol

1997-09-11

1999-12-28

Tran, Toan

Miscellaneous active electrical nonlinear devices, circuits, and

Specific signal discriminating without subsequent control

By amplitude

327 77, H03K 5153

Patent

active

060086742

ABSTRACT:
A semiconductor integrated circuit device with a high voltage detection circuit comprises a high voltage step-down circuit for stepping down a high voltage input and outputting the stepped-down voltage, a reference voltage generator for generating plural reference voltages, a reference voltage selector for selecting one of the plural reference voltages, a high voltage detection circuit for comparing the stepped down voltage with the selected reference voltage to detect a high voltage and a control circuit for controlling the voltage drop of the high voltage and selection of the plural reference voltages to set the high voltage to be detected by the high voltage detector. There is also disclosed semiconductor integrated circuit having a high voltage step-down circuit for outputting plural stepped-down voltages having a fine tuner for fine-tuning each of the plural stepped-down voltages wherein a stepped-down voltage having been tuned finely is compared with a reference voltage given by a reference voltage generator.

REFERENCES:
patent: 5083045 (1992-01-01), Yim et al.
patent: 5280198 (1994-01-01), Almulla
patent: 5283762 (1994-02-01), Fujishima
patent: 5512849 (1996-04-01), Wong
patent: 5760614 (1998-06-01), Ooishi et al.

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