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. 27, 2007
Filed:
Jan. 05, 2006
Bryan Atwood, Tokyo, JP;
Takao Watanabe, Fuchu, JP;
Bryan Atwood, Tokyo, JP;
Takao Watanabe, Fuchu, JP;
Renesas Technology Corp., Tokyo, JP;
Abstract
A semiconductor device capable of accessing to the memory with a high speed, and comprising a memory with a large capacity. The semiconductor device comprises a plurality of memory banks (Bank)towhere the write cycle time is twice as long as the read cycle and each provided with the separate write and read ports, and two cache data banks CDand CD, in which, for example, in the case that an external write instruction with continuous cycles is issued in cycle #, the data of Bankstored in CD, Rowcannot be written back since Bankis busy with the cycle #, the data of Bankstored in CD, Rowcan be written back instead.