ESP32 Forum

Good Morning,

I am working on a ESP32-S3-WROOM1 N8 module and I would like to know the type of SPI Flash that is embedded in
the module ?

I am wondering if it is NOR Flash, NAN Flash ?
And I am wondering what is the difference between this flash memory and flash memory that we can find in
micro SD Memory Card ?

Thank you for your help,
Best regards,

Thomas TRUILHE

Currently, ESP chips can only boot from NOR flash. The difference between it and e.g. a SD card is that SD cards have an entirely different interface, tend to be much larger, and usually consist of NAND flash with an ASIC that acts as a translation layer to do wear leveling and error correction.

Thank you for your answer,


and is it possible using librairies to mount a Filesystem on the 8Mo internal NOR Flash ?


Best regards,

Thomas TRUILHE

Yes. There's FAT, spiffs and littlefs, for example.

Where can i find an example on how to use fatfs in order to mount a filesys on the internan flash. I have done it on an external flash but i dont know the parameters to use for internal flash of the wroom module.
Cpuld you help ?
The same question for the other filsys you mentionned please.
Best regards

The ESP-IDF examples directory tends to have examples for these kinds of things, e.g. a fatfs example would be here.

Could y ou confirm that this example can be used with the embedded Flash of the WROOM module ?