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. 19, 1994
Filed:
Aug. 25, 1993
Kenji Matsuo, Yokohama, JP;
Yasukazu Noine, Yokohama, JP;
Kazuhiko Kasai, Yokohama, JP;
Yoshihiro Kato, Kawasaki, JP;
Kazuaki Umetsu, Kitakami, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
In a sense amplifier circuit, an output potential is set in a data output state when an operation of the sense amplifier is a worst pass before the start of read access. In a memory read mode, when data corresponding to the worst-pass operation of the sense amplifier circuit is read out, the circuit is previously set in a corresponding data output state. A time delay (gate delay) by a gate does not occur. In contrast, when data corresponding to the best-pass operation of the sense amplifier circuit is read out, the gate delay occurs by this operation. The gate delay, however, is shorter than that of the worst pass. As a result, only the best pass is present as the operation mode of the sense amplifier circuit. Therefore, a high operation speed is achieved, so that a high read speed of the entire memory is achieved.