The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 10, 2011
Filed:
Apr. 02, 2010
Shinya Okuno, Tokyo, JP;
Kiyohiro Furutani, Tokyo, JP;
Shinya Okuno, Tokyo, JP;
Kiyohiro Furutani, Tokyo, JP;
Elpida Memory, Inc., Tokyo, JP;
Abstract
To include a first X decoder constituted by a transistor whose off-leakage current has a first temperature characteristic, a pre-decoder circuit and a peripheral circuit constituted by a transistor whose off-leakage current has a second temperature characteristic, a power supply control circuit that inactivates the X decoder when a temperature exceeds a first threshold during a standby state, and a power supply control circuit that inactivates the pre-decoder and the peripheral circuit when a temperature exceeds a second threshold during the standby state. According to the present invention, whether power supply control is performed on a plurality of circuit blocks is determined based on different temperatures, therefore optimum power supply control can be performed on each of circuit blocks.