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:
Mar. 18, 2003
Filed:
Mar. 15, 2002
Masaki Okuda, Kawasaki, JP;
Toshiya Uchida, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
A semiconductor memory device includes a plurality of memory blocks, each of which is refreshed independently of one another, m (m>1) data pins, each of which continuously receives or outputs n (n>1) data pieces, a conversion circuit which converts data of each of the data pins between parallel data and serial data, m×n data bus lines on which the n data pieces are expanded in parallel with respect to each of the m data pins, m address selection lines which are connected to m respective blocks of the memory blocks corresponding to the m respective data pins, and are simultaneously activated, the activation of any one of the address selection lines connecting the data bus lines to a corresponding one of the m respective blocks and resulting in the n data pieces being input/output to/from the corresponding one of the m respective blocks.