Apparatus and method for a read-modify-write operation in a dynamic random access memory

  • US 5,917,839 A
  • Filed: 05/27/1997
  • Issued: 06/29/1999
  • Est. Priority Date: 06/07/1996
  • Status: Expired due to Term
First Claim
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1. A synchronous dynamic random access memory unit having read and write operations initiated by an address signal group, a system clock signal and an activation signal;

  • said memory unit comprising;

    a storage cell array for storing data signals; and

    control apparatus responsive to address signals, a system clock signal, and a read control signal for retrieving data signals from said storage cell array, said control apparatus including a gate circuit responsive to a non-change in said address signals and a system clock signal for preventing said read control signal from initiating a read operation during a modify portion of a read-modify-write operation.

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