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:
Aug. 08, 2006
Filed:
May. 28, 2002
Hiroyuki Takahashi, Kanagawa, JP;
Atsushi Nakagawa, Kanagawa, JP;
Hideo Inaba, Kanagawa, JP;
NEC Electronics Corporation, Kanagawa, JP;
Abstract
A semiconductor memory device is provided for preventing a late-write from disturbing a refresh operation and also for reducing a current consumption in a write cycle with execution of the late-write. Upon a transition of an address ADD, an address transition detector circuit detects this address transition. Upon receipt of a result of detection by the address transition detector circuit, a state control circuit judges an operation to be executed, from an output enable signal /OE and a write enable signal /WE, and then outputs any of a read statement RS, a write statement WS, and a refresh statement FS. According to a clock signal ACLK, input signals such as addresses are taken for executions of operations based on the statements.