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. 24, 1999
Filed:
Jan. 22, 1998
Yukihiro Tsukamoto, Hyogo, JP;
Koji Kimura, Hyogo, JP;
Masaki Nishimoto, Hyogo, JP;
Masayuki Kasamoto, Hyogo, JP;
Naotaka Okada, Hyogo, JP;
Kazuhisa Uetsuki, Hyogo, JP;
Masakatsu Murakami, Hyogo, JP;
Shigekazu Aoki, Hyogo, JP;
Zengcheng Tian, Hyogo, JP;
Shin Sekiya, Hyogo, JP;
Akihiro Shirai, Hyogo, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
When a special operation mode is instructed, a test oscillation circuit operating at a cycle shorter than a refresh oscillation circuit specifying the cycle of self refresh is activated according to an external row address strobe signal. The internal row address strobe signal is provided to row related control circuitry via a selector. An internal row address strobe signal can be rendered active at a cycle shorter than the cycle of the external row address strobe signal, to carry out row selection. A row is selected at a cycle shorter than the transition cycle of an external signal.