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:
Jan. 17, 2006
Filed:
Oct. 09, 2002
Hidehiko Tanaka, Nara, JP;
Hidehiko Tanaka, Nara, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
A flash memory constructed of a plurality of memory cells M, . . . , Mselected by the outputs of an X-decoderand a Y-decoderfor generating a row address and a column address is provided with a measurement use write pulse generator circuitwhich simultaneously supplies write signals of different pulse widths to the memory cells on an identical column, and a select circuitwhich switches over so as to supply the write signals from the measurement use write pulse generator circuitto the word lines M, . . . , Mon the identical column during pulse width measurement and supply the word line signal from the X-decoderto the corresponding one word line WLduring normal access. According to this flash memory, the total write time can be reduced by reducing the frequency of repetition of write and verify.