External FLASH Not Working

[luiz.claro]

I have made a custom board using ESP32-D0WD-V3. Since this model needs an external FLASH memmory, I have chosen the 16Mbit MX25V16066M2I02 from Macronix. I am being able to flash it with my firmware, but it seens that the ESP32 is unable to recognize the memmory during its boot. In the same PCB, I have tested other memories, like the W25Q16JVSNIQ from Wirebond, which worked fine. So, the problem doesn't seen to be related to the PCB design/schematic. Could someone help?

Schematic.png (287.17 KiB) Viewed 1179 times

[jgustavoam]

There may be many differences. I suggest you compare the datasheets.


MX25V16066M2I02 from Macronix - Datasheet:
https://br.mouser.com/datasheet/2/819/M ... 401199.pdf

W25Q16JVSNIQ from Winbond - Datashhet:
https://br.mouser.com/datasheet/2/949/w ... 489727.pdf

MX25.JPG (21.33 KiB) Viewed 959 times

W25Q.JPG (33.35 KiB) Viewed 959 times