Need help for External SPI Flash Support on ESP32 WROVER Kit

[Ritesh]

Hi,

We have started to work on ESP32 WROVER kit in which ESP32 WROVER module has been used.

So, In that module, There are mainly 4 MB SPI Flash and 4 MB PSRAM is connected over SPI Interface. I have checked that some if pins for both SPI Flash and PSRAM are common like MISO and MOSI. So why it has been kept common for that?

Also, I just want to add extra 16 MB external SPI Flash memory in addition to 4 MB SPI Flash memory. So, would you please suggest pin configuration for that and is it possible or not?

Mainly my purpose is to add some more extra memory interface in addition to existing one for my application development.

Looking forward for some positive feedback on this.