Method for screening and classifying flash memory particles
A flash memory particle and classification technology, applied in the storage field, can solve problems such as inability to accurately distinguish between strong and weak, flash classification errors, and increased error rates
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[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0028] By proposing a new NAND Flash screening strategy: use the "temperature change test method" as the overall detection method, and use the "comparative classification method" to judge the strength of each Block, so as to distinguish the NAND Flash grade, including the use of particles for screening And the identification of early "weak blocks" and "bad blocks".
[0029] The method of "temperature change test method" is to write data in low temperature or high t...
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