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:
Dec. 05, 2000
Filed:
Jan. 23, 1998
William L Randolph, Durham, NC (US);
Dennis Blankenship, Durham, NC (US);
Rhonda Cassada, Hillsborough, NC (US);
Mitsubishi Electronics America Inc., Cypress, CA (US);
Abstract
A multi-port RAM (MPRAM) having a SRAM and a DRAM on a single chip. Separate pins are provided on the chip to supply independent chip select signals for the SRAM and the DRAM. When the SRAM chip select signal is at a high level, a clock generator is prevented from producing an internal clock signal for the SRAM. As a result, no SRAM operation is performed in response to a SRAM command. Similarly, when the DRAM chip select signal is high, a clock generator produces no internal clock signal for the DRAM. As a result, DRAM operations are prevented from being performed in response to DRAM commands.