Semiconductor integrated circuit device with internal voltage co

Details Semiconductor integrated circuit device with internal voltage co Semiconductor integrated circuit device with internal voltage co

1992-10-01

1994-10-04

Callahan, Timothy P.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

3072723, 323313, G05F 156

Patent

active

053529359

ABSTRACT:
A semiconductor integrated circuit device has a first internal voltage controlling circuit which lowers an external power source voltage and produces a predetermined internal power source voltage. The device further has a second internal voltage controlling circuit formed by an internal-voltage drop detection circuit for detecting the lowering of the internal power source voltage from a predetermined reference voltage and a switching circuit for causing the external power source voltage to be directly connected to an internal voltage output terminal based on an output from the internal-voltage drop detection circuit. The internal power source voltage is maintained close to the required value thereby preventing a deterioration of circuit performance even when the external power source voltage drops close to the internal power source voltage.

REFERENCES:
patent: 5063304 (1991-11-01), Iyengar

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