Let's say you've designed a product around a Winbond W25N02KV 2 Gbit 3.3 V QSPI NAND flash, then your power delivery network changed and you decided to migrate to Winbond W25N02JW 2 Gbit 1.8 V QSPI NAND flash. Sounds easy, right?
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When the alternative to signing an NDA is "calipers".
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Presented verbatim from Linux rtc-rk808 source code.
Rated "most November per calendar year per SoC".
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The Winbond W25Nxx memory IC series uses NAND flash where the Winbond W25Qxx series (and many compatible devices from other vendors) uses NOR flash. Despite this, the W25Nxx series uses a command set that seems compatible with the W25Qxx NOR flash command set... until you look closer.
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Extracted from firmware for Mstar MC800S-V3 camera module.
Rated "the most uses of grep per grep".
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