Persistent data storage which utilizes a shared power supply

Details Persistent data storage which utilizes a shared power supply Persistent data storage which utilizes a shared power supply

1995-08-07

1997-02-18

Nelms, David C.

Static information storage and retrieval

Powering

Data preservation

365226, 365154, 364707, G11C 700

Patent

active

056047096

ABSTRACT:
A relatively inexpensive static random access memory is utilized to store persistent data in a computer. To provide the SRAM with this capability, it is connected to a source of power within the computer that includes a battery. The source of power is connected to the SRAM in a manner such that the SRAM is in an enabled state whenever any power is available to it, from either a battery or a power supply connected to a regulated voltage source. When the computer is turned off, to prevent devices connected to the SRAM from draining current being provided by the battery, a chip select terminal of the SRAM is isolated from other circuits on the computer, to prevent leakage.

REFERENCES:
patent: 5001670 (1991-03-01), Slate et al.
patent: 5016223 (1991-05-01), Kimura et al.
patent: 5375246 (1994-12-01), Kimura et al.

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