Nonvolatile memory card with automatic power supply configuratio

Details Nonvolatile memory card with automatic power supply configuratio Nonvolatile memory card with automatic power supply configuratio

1993-06-30

1994-07-12

LaRoche, Eugene R.

Static information storage and retrieval

Powering

365227, 365228, 365900, G11C 1300

Patent

active

053294912

ABSTRACT:
A nonvolatile memory card includes a power supply input for receiving a device power supply voltage for the memory card and a plurality of memories arranged in an array. Each of the plurality of memories receives the device power supply voltage from the power supply input. Each of the plurality of memories receives a device power supply voltage indication signal that indicates voltage level of the device power supply voltage and configures circuitry within each of the plurality of memories to operate in accordance with the voltage level of the device power supply voltage. A voltage detection circuit is coupled to the power supply input for detecting the voltage level of the device power supply voltage and for generating the device power supply voltage indication signal. A logic is coupled to the voltage detection circuit and each of the plurality of memories for (1) receiving the device power supply voltage indication signal from the voltage detection circuit, (2) applying the device power supply voltage indication signal to each of the plurality of memories such that the circuitry of each of the plurality of memories is configured in accordance with the device power supply voltage indication signal, and (3) supplying data of the nonvolatile memory card with respect to the voltage level of the device power supply voltage to external circuitry.

REFERENCES:
patent: 4853560 (1989-08-01), Iwamura
patent: 4912346 (1990-03-01), Mizuta
patent: 4916662 (1990-04-01), Mizuta
patent: 5008566 (1991-04-01), Hashimoto
patent: 5172342 (1992-12-01), Gochi
patent: 5184031 (1993-02-01), Hayakawa
patent: 5193198 (1993-03-01), Yokouchi
patent: 5197033 (1993-03-01), Watanabe
patent: 5267218 (1993-11-01), Elbert

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