[ESP32-S3] Using Octal PSRAM as QSPI PSRAM

swoj_ic
Posts: 1
Joined: Mon May 20, 2024 3:59 pm

[ESP32-S3] Using Octal PSRAM as QSPI PSRAM

Postby swoj_ic » Mon May 20, 2024 6:37 pm

Is it possible to use an ESP32-S3 WROOM module (N8R8) which hosts an octal PSRAM module but use it instead as a QSPI PSRAM module? I recognize that total PSRAM would be reduced but want to find a firmware workaround to an issue.

ESP_Sprite
Posts: 9833
Joined: Thu Nov 26, 2015 4:08 am

Re: [ESP32-S3] Using Octal PSRAM as QSPI PSRAM

Postby ESP_Sprite » Tue May 21, 2024 1:41 am

No. Octal psram chips generally don't support a quad interface, and given the commands and addresses are also sent over those 8 wires, not using 4 of then is not going to work.

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