Semiconductor integrated circuit device with clock frequency inv

Details Semiconductor integrated circuit device with clock frequency inv Semiconductor integrated circuit device with clock frequency inv

1997-09-29

1999-05-11

Nelms, David

Static information storage and retrieval

Addressing

Sync/clocking

36523008, 365207, 36518911, G11C8/00

Patent

active

059035137

ABSTRACT:
A semiconductor integrated circuit device comprising an internal power supply circuit for supplying to the internal circuits of the semiconductor integrated circuit device a stable output voltage that does not vary with the clock frequency is disclosed. An internal voltage step-down means steps down an external power supply voltage to generate an internal power supply voltage based on a particular reference voltage. An internal clock signal generator generates an internal clock signal based on a clock signal supplied from an external source. A frequency discriminator then determines the frequency of the internal clock signal generated by the internal clock signal generator. With the internal clock signal frequency thus determined, the internal voltage step-down means is able to accelerate the rate of increase in the output current in response to the drop in the internal power supply voltage as the frequency identified by the frequency discriminator rises.

REFERENCES:
patent: 5337282 (1994-08-01), Hoike
patent: 5499213 (1996-03-01), Niimi et al.
patent: 5594699 (1997-01-01), Normura et al.

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