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:
Apr. 29, 2003
Filed:
Jun. 01, 2001
Applicant:
Inventors:
Takato Shimoyama, Tokyo, JP;
Hiroyuki Takahashi, Tokyo, JP;
Assignee:
NEC Electronics Corporation, Kanagawa, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11C 1/604 ; G11C 1/500 ;
U.S. Cl.
CPC ...
G11C 1/604 ; G11C 1/500 ;
Abstract
According to the disclosed embodiments, a semiconductor memory device may include an address register circuit ( ) and data register circuit ( ) that can store a write address and write data from one write operation and output the stored write address and write data during a subsequent write operation. In a dynamic random access memory (DRAM) embodiment ( ), a precharge and/or refresh operation may follow the writing of previously stored write data. Such an arrangement may reduce and/or eliminate a read after write timing requirement (TWR), which can improve the operating speed of the semiconductor memory device.