Patents Represented by Attorney Muirhead & Saturnell LLP

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  • Semiconductor memory device and address conversion circuit
    Patent number: 7023747
    Abstract: It is an object of the present invention to provide a semiconductor memory device with a suitable redundancy circuit and an address conversion circuit, wherein external addresses are allocated to both a memory cell array which needs refresh, typically DRAM and another memory cell array which does not need refresh, typically SRAM.
    Type: Grant
    Filed: November 27, 2001
    Date of Patent: April 4, 2006
    Assignee: NEC Electronics Corp.
    Inventor: Hiroyuki Takahashi