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. 06, 2014
Filed:
Feb. 22, 2013
Kabushiki Kaisha Toshiba, Tokyo, JP;
Yusuke Higashi, Kawasaki, JP;
Haruki Toda, Yokohama, JP;
Kenichi Murooka, San Jose, CA (US);
Satoru Takase, Yokohama, JP;
Yuichiro Mitani, Miura-gun, JP;
Shuichi Toriyama, Yokohama, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
According to one embodiment, a semiconductor memory device includes a memory cell array including blocks, each block being capable of executing a write, read, or erase operation independently of other blocks. A control portion is configured to execute the operation of a first block among the blocks in a first cycle, set a selection inhibited region within a range of a predetermined distance from the first block, until a temperature relaxation time for relaxing a temperature of the first block has elapsed, set a region except the selection inhibited region among the blocks as a second block, and execute the operation of the second block in a second cycle.