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:
Oct. 23, 2007
Filed:
Aug. 03, 2005
Hiroyuki Tanikawa, Akishima, JP;
Toshihiro Tanaka, Akiruno, JP;
Yutaka Shinagawa, Iruma, JP;
Takashi Yamaki, Kodaira, JP;
Hiroyuki Tanikawa, Akishima, JP;
Toshihiro Tanaka, Akiruno, JP;
Yutaka Shinagawa, Iruma, JP;
Takashi Yamaki, Kodaira, JP;
Renesas Technology Corp., Tokyo, JP;
Abstract
A semiconductor integrated circuit has a first nonvolatile memory area and a second nonvolatile memory area to store information in accordance with a variable threshold voltage. At least one condition of the following conditions of the first nonvolatile memory area is made different from that of the second nonvolatile memory area: erase verify determination memory gate voltage, erase verify determination memory current, write verify determination memory gate voltage, write verify determination memory current, erase voltage, erase voltage application time, write voltage, and write voltage application time in the first nonvolatile memory area.