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. 12, 1998
Filed:
Jan. 24, 1997
Yasuhiro Hotta, Nara, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
A semiconductor memory device according to the present invention includes: a memory cell array including a plurality of virtual ground lines, a plurality of bit lines, and a plurality of memory cells arranged in a matrix shape; a selection circuit; a first amplifier circuit; a second amplifier circuit; and a first control circuit and a second control circuit. The first control circuit and the second control circuit selectively charge or discharge those of the plurality of virtual ground lines corresponding to one page in accordance with the input address, the first control circuit and the second control circuit performing the charging or discharging independently of each other.