US Patent No: 7,881,142

Number of patents in Portfolio can not be more than 2000

Storage device and control method thereof

ALSO PUBLISHED AS: 20070076492

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Abstract

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A storage device and its control method are described, according to which a bias voltage to be supplied to a memory cell array is selected from boosted voltages which are increased from an external voltage and non-boosted voltages which are not increased from the external voltage. In the period during which a DC-DC converter section supplies a boosted voltage increased from the external voltage to an internal bias line for supplying a bias voltage to the memory cell array, a non-boosted voltage supply section for supplying a non-boosted voltage equal to or less than the external voltage is in its inactive state. In the period during which the non-boosted voltage supply section supplies a non-boosted voltage to the internal bias line, the DC-DC converter section is in its inactive state. In the period during which a boosted voltage is supplied to the internal bias line, the DC-DC converter section is used for ensuring sufficient power supply ability, and in the period during which the non-boosted voltage is supplied to the internal bias line, the DC-DC converter section can be kept in its inactive state. Thus, the power consumed by the DC-DC converter section can be saved in the period during which the supply of a boosted voltage is unnecessary.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
SPANSION LLCSUNNYVALE, CA2494

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Arakawa, Hideki Kawasaki, JP 66 1051
Kawamoto, Satoru Kasugai, JP 100 463

Cited Art Landscape

Patent Info (Count) # Cites Year
 
RENESAS ELECTRONICS CORPORATION (1)
6,473,321 Semiconductor integrated circuit and nonvolatile semiconductor memory 31 2001
 
WARREN & LEWIS INVESTMENT CORPORATION (1)
6,209,034 Remote keyboard macros activated by hot icons 40 1995

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