Partial refresh technique to save memory refresh power

Partial refresh technique to save memory refresh power

In a conventional memory subsystem, a memory controller issues explicit refresh commands to a DRAM memory device to maintain integrity of the data stored in the memory device when the memory device is in an auto-refresh mode. A significant amount of power may be consumed to carry out the refresh. To...

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Hauptverfasser: Suh, Jungwon, Li, Yanru, Lo, Michael Hawjing, Chun, Dexter Tamio
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Sprache:eng
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INFORMATION STORAGE
PHYSICS
STATIC STORES
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creator Suh, Jungwon
Li, Yanru
Lo, Michael Hawjing
Chun, Dexter Tamio
description In a conventional memory subsystem, a memory controller issues explicit refresh commands to a DRAM memory device to maintain integrity of the data stored in the memory device when the memory device is in an auto-refresh mode. A significant amount of power may be consumed to carry out the refresh. To address this and other issues, it is proposed to allow a partial refresh in the auto-refresh mode in which the refreshing operation may be skipped for a subset of the memory cells. Through such selective refresh skipping, the power consumed for auto-refreshes may be reduced. Operating system kernels and memory drivers may be configured to determine areas of memory for which the refreshing operation can be skipped.
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A significant amount of power may be consumed to carry out the refresh. To address this and other issues, it is proposed to allow a partial refresh in the auto-refresh mode in which the refreshing operation may be skipped for a subset of the memory cells. Through such selective refresh skipping, the power consumed for auto-refreshes may be reduced. 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title Partial refresh technique to save memory refresh power
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