QSPI with PSRAM

[Manish Gawade]

Is the process of communication between QSPI and Ext. flash same for QSPI and PSRAM? If not, what could be the procedure?

And how can I communicate with 2 PSRAM using single CS ?

[Simonr]

Hi

QSPI is not very well suited for connecting RAM modules, as you can't write through the XIP area, only read.

I'd suggest using a bigger microcontroller such as the nRF5340 instead, as external RAM generally is rather slow. 

Best regards,

Simon