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:
Jun. 06, 2006
Filed:
Aug. 10, 1998
Kiyoshi Matsubara, Higashimurayama, JP;
Masanao Sato, Tokyo, JP;
Hirofumi Mukai, Musashino, JP;
Eiichi Ishikawa, Kodaira, JP;
Kiyoshi Matsubara, Higashimurayama, JP;
Masanao Sato, Tokyo, JP;
Hirofumi Mukai, Musashino, JP;
Eiichi Ishikawa, Kodaira, JP;
Renesas Technology Corp., Tokyo, JP;
Hitachi ULSI Systems Co., Ltd., Kodaira, JP;
Abstract
A data processing apparatus having a built-in flash memory and being capable of rewriting the built-in flash memory by use of versatilely used PROM writer has a CPU, an electrically rewritable nonvolatile flash memory both formed in a single semiconductor substrate, and is operable in a mode in which the built-in flash memory is rewritable in accordance with commands supplied from a PROM writer. The data processing apparatus has a command latch made externally writable when the above-mentioned operation mode is established, a command analyzer and a sequence controller for controlling a sequence of rewriting the flash memory in accordance with the analysis result. The command analyzer and sequence controller may be realized by the CPU.