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. 05, 1998
Filed:
Sep. 12, 1996
Mamoru Kitamura, Tokyo, JP;
NEC Corporation, , JP;
Abstract
A semiconductor memory device includes an internal clock signal generating section for generating an internal clock signal from an external clock signal. A latch section includes an address latching circuit for latching an inputted address, a command latching circuit for latching an inputted command and a write data latching circuit for latching an inputted write data. A state setting section controls the address latching circuit, the command latching circuit and the write data latching circuit based on an address key latched by the address latching circuit and a mode setting command latched by the command latching circuit such that a time difference is selectively extended between a first timing of the internal clock signal and a second timing for each of the address, the command and the write data to be changed.