Memory card with low power consumption in inactive state

Details Memory card with low power consumption in inactive state Memory card with low power consumption in inactive state

1996-07-25

1998-03-31

Nelms, David C.

Static information storage and retrieval

Powering

Data preservation

365227, G11C 514

Patent

active

057346186

ABSTRACT:
A memory card including an integrated memory circuit and internal power supply wherein a power supply voltage to the memory circuit is supplied from the internal power supply when the memory card is not mounted in a data processing device and from the data processing device when the memory card is mounted therein and further includes an operating signal detection circuit for determining whether the memory card is active or inactive in a mounted state and a power supply control circuit for dropping the power supply voltage applied to the memory circuit by a predetermined amount when the memory card is inactive.

REFERENCES:
patent: 4912346 (1990-03-01), Mizuta
patent: 5140557 (1992-08-01), Yoshida
patent: 5212664 (1993-05-01), Shinohara
patent: 5245582 (1993-09-01), Kimura
patent: 5490118 (1996-02-01), Nishioka

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