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:
Dec. 31, 2002
Filed:
Jun. 15, 2001
Hiroyuki Sadakata, Osaka, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A semiconductor memory device includes memory array, first and second rows of sense amplifiers and selector. The memory array has first and second ports. The first and second rows of sense amplifiers are associated with the first and second ports, respectively. Responsive to a port selection signal, the selector selects the first or second port, through which burst data should be transferred, and couples the first or second row of sense amplifiers, associated with the port selected, to a data input or output circuit. If the selector has selected the first port, the device performs a refresh operation on the array using the second row of sense amplifiers while transferring the burst data through the first port. If the selector has selected the second port, the device performs the refresh operation on the array using the first row of sense amplifiers while transferring the burst data through the second port.