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:
Jul. 13, 1993
Filed:
May. 21, 1992
Yasunobu Tokuda, Nagano, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
A semiconductor memory adapted to receive a chip selection signal and address signal, composed of: a signal generating circuit for generating inner selection signals with respect to the chip selection signal, a pulse generating circuit for detecting any changes in the address signals and generating a pulse signal; and a pulse width changing circuit for inputting the pulse signal to output a control signal for precharging or equalizing the data lines of a memory cell array. The pulse width changing circuit outputs the control signal having a pulse whose pulse width corresponds to what is obtained by converting the pulse width of the pulse signal into a longer one when the inner selection signals are in the chip-selecting condition.