Memory system with high speed non-volatile memory backup using pre-aged flash memory devices
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United States of America Patent
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Aug 29, 2017
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app pub date -
Jul 2, 2014
filing date -
Jul 2, 2014
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Abstract
A memory system having non-volatile memory backup with high-speed programming capability. The non-volatile memory, such as flash memory, is pre-aged before first use in a host system. Pre-aging includes execution of a plurality of dummy program and erase cycles as part of the memory system or before assembly as part of the memory system. The memory system can include an NVDIMM having flash memory backup. The pre-aged flash memory programs a page of data in a shorter period of time relative to new flash memory. Fewer flash memory chips are needed in the memory system relative to memory systems using new flash memory chips, thereby reducing cost of the memory system. The NVDIMM may be used to backup data from a volatile memory device such as a DRAM. Programming times may be tracked after each dummy program/erase cycle, and for each programmable page of a memory block.
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