Partial bank DRAM refresh
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United States of America Patent
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Issued Date -
May 19, 2005
app pub date -
Nov 14, 2003
filing date -
Nov 14, 2003
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A 'partial refresh command' is used to refresh a fraction of the banks in a multi-bank DRAM. In a first implementation the command refreshes one half of the banks. In a second implementation the command refreshes one quarter of the banks. The power drawn by the upper or lower bank refresh on the eight bank DRAM is the same as the power drawn by an 'all bank' refresh on a four bank DRAM, without requiring the refresh period to be extended.
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