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:
Feb. 21, 2006
Filed:
Sep. 05, 2003
Norihiko Hakushi, Hyogo, JP;
Atsushi Ohba, Tokyo, JP;
Yoshimasa Yoshimura, Tokyo, JP;
Takeshi Nakayama, Tokyo, JP;
Norihiko Hakushi, Hyogo, JP;
Atsushi Ohba, Tokyo, JP;
Yoshimasa Yoshimura, Tokyo, JP;
Takeshi Nakayama, Tokyo, JP;
Renesas Technology Corp., Tokyo, JP;
Renesas Device Design Corp., Hyogo, JP;
Abstract
A semiconductor memory device including a flash memory and a RAM incorporating a pseudo-SRAM contained in an MCP, has an internal transfer control signal for controlling internal data transfer between the flash memory and pseudo-SRAM, and an external transfer control signal for controlling data transfer between an external CPU and pseudo-SRAM, as control signals for the pseudo-SRAM. A flash controller in the RAM controls the internal transfer control signal so as to suspend the internal data transfer between the flash memory and pseudo-SRAM when the external CPU requests access to the pseudo-SRAM during the internal data transfer.