Industry White Paper

Testing NAND Flash Write and Read Speeds

May 19, 2020 by Swissbit

Overview

NAND flash reading and writing speeds depend on the access pattern and influence of the previously written pattern. Knowing this assists the designer in choosing suitable tests in order to check their requirements for storage mediums. 

Identical test conditions must be met in order to compare speed specifications in NAND flash memory datasheets. If the measurement is not repeatedly started or does not cover the entire logical address space, the specified speed can be significantly higher than the real achievable speed. 

Simulating maximum load peaks and application access patterns as best as possible, in addition to testing over a longer period of time, is recommended when qualifying a NAND flash memory medium for performance or time-critical applications.

This app note from Swissbit discusses the factors that influence the writing and reading speed of NAND flash.

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