Wifi6 stack size in the host

[Tom.Fu]

Dear Support Team

We would like to know how many RAM and ROM will be occupied by Network stack and WiFi host stack when use the nRF52840 or nRF5340 as a host for nRF7002.

I have read the below document, but I couldn't find the size of Network stack and WiFi host stack. 

After I read the specification, I also couldn't find any internal crystal in the nRF7002. The 40Mhz external crystal in the below picture is necessary, right? Many thanks.

[Simonr]

Hi

We don't have any official numbers at the moment, as we're still reviewing what they will be, and it will depend heavily on what you link and what your feature set requirements are. Here are some early estimates of ROM usage for a couple of "common" use cases:

• Scan only: ~150kB (this is the full wifi/scan sample, with logging, coredump, etc. disabled).
• Station (STA): ~480kB (wifi/sta sample, with logging, coredump, etc. disabled).

As for RAM usage, this very much depends on outside factors as well, I.E. how many APs you get in a scan search, but up to 200kB must be expected.

The 40MHz external crystal is indeed required for nRF7002 designs.

Best regards,

Simon