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. 03, 2009
Filed:
Nov. 27, 2003
Seiji Miura, Hachioji, JP;
Kazushige Ayukawa, Kokubunji, JP;
Seiji Miura, Hachioji, JP;
Kazushige Ayukawa, Kokubunji, JP;
Renesas Technology Corp., Tokyo, JP;
Abstract
A memory system including large-capacity ROM and RAM in which high-speed reading and writing are enabled is provided. A memory system including a non-volatile memory (CHIP), DRAM (CHIP), a control circuit (CHIP) and an information processing device (CHIP) is configured. Data in FLASH is transferred to SRAM or DRAM in advance to speed up. Data transfer between the non-volatile memory (FLASH) and DRAM (CHIP) can be performed in the background. The memory system including these plural chips is configured as a memory system module in which each chip is mutually laminated and each chip is wired via a ball grid array (BGA) and bonding wire between the chips. Data in FLASH can be read at the similar speed to that of DRAM by securing a region in which the data in FLASH can be copied in DRAM and transferring the data to DRAM in advance immediately after power is turned on or by a load instruction.