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:
Nov. 27, 2001
Filed:
Jun. 29, 2000
Kouji Inoue, Ikoma, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
When starting a power, the precharge potential is supplied to all the bit lines and virtual GND lines by VREF potential supply circuits. In a read operation, after the end of a period during which the bit lines of the selected memory block are sensed by memory cells, the precharge potential is immediately supplied to the bit lines and the virtual GND lines, which have been selected, by the VREF potential supply circuits. By this operation, the precharge potential of all the bit lines and the virtual GND lines is maintained prior to the read operation. With this arrangement, a semiconductor storage device capable of increasing the access time speed without bit line division is provided.