Refreshing a dynamic random access memory utilizing a mandatory

Details Refreshing a dynamic random access memory utilizing a mandatory Refreshing a dynamic random access memory utilizing a mandatory

1996-06-05

1997-07-22

Chan, Eddie P.

G06F 1216

Patent

active

056511310

ABSTRACT:
A data processing system which utilizes dynamic memory that requires periodic refreshment includes a processor coupled to a memory controller which is in turn coupled to the dynamic memory. The memory controller includes a memory operation command queue for sequentially receiving memory operation commands from the processor and a refresh module for initiating refresh operations. The refresh module includes circuitry for initiating either a mandatory refresh operation or an optional refresh operation. Mandatory refresh operations are initiated at the conclusion of periodic intervals, unless an optional refresh operation has been initiated within the particular interval. An optional refresh operation is initiated within a particular interval if the memory operation command queue is empty. Optional refresh operations thereby serve to substitute for mandatory refresh operations, minimizing the system time lost to refresh operations.

REFERENCES:
patent: 4172282 (1979-10-01), Aichelmann, Jr. et al.
patent: 4317169 (1982-02-01), Panepinto, Jr. et al.
patent: 4406013 (1983-09-01), Reese et al.
patent: 4631701 (1986-12-01), Kappeler et al.
patent: 4965722 (1990-10-01), Takuume
patent: 5027327 (1991-06-01), Kobayashi et al.
patent: 5261068 (1993-11-01), Gaskins et al.
Deferred Refresh of Dynamic Random Access Memory, 2244 Research Disclosure, Oct. 1991, No. 30, p. 768.
Dynamic Ram Refresh Controller, IBM Technical Disclosure Bulletin, vol. 28, No.12, May 1986, pp. 5491-5492.

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