PSRAM chip used in ESP32-S3-WROOM-2-N32R16V module

MERAGA
Posts: 4
Joined: Sun Jan 25, 2026 3:36 pm

PSRAM chip used in ESP32-S3-WROOM-2-N32R16V module

Postby MERAGA » Sun Jan 25, 2026 3:47 pm

Hello Espressif community,

I am an individual developer working with the ESP32-S3 SoC.
I am currently planning a design that requires external PSRAM, and I want to ensure compatibility with officially validated chips.

Could anyone provide the manufacturer and part number of the PSRAM used inside the ESP32-S3-WROOM-2-N32R16V module?
I am not representing a company; this is for a personal project.

Any guidance would be greatly appreciated. Thank you!

amitrs
Posts: 8
Joined: Mon Jan 26, 2026 7:40 am

Re: PSRAM chip used in ESP32-S3-WROOM-2-N32R16V module

Postby amitrs » Mon Jan 26, 2026 11:32 am

I have not tried but as per the specs for wroom2 it uses Octal SPI for PSRAM
What I know based on my own endowers is that you can look for Oct SPI RAM from vendors like APMemory or Winbond
Or just look for APS6408L or APS12808L series from these vendors

Hope it helps

MERAGA
Posts: 4
Joined: Sun Jan 25, 2026 3:36 pm

Re: PSRAM chip used in ESP32-S3-WROOM-2-N32R16V module

Postby MERAGA » Mon Jan 26, 2026 6:07 pm

Thanks for helping!
Acording to my research, Espressif using APS12808L series for modules. All of APS12808L features is same with features of ESP32-S3-WROOM-2-N32R16V module's RAM's.

nopnop2002
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Re: PSRAM chip used in ESP32-S3-WROOM-2-N32R16V module

Postby nopnop2002 » Tue Jan 27, 2026 1:17 am

ESP32 supports PSRAM connected in parallel with the SPI flash chip. While ESP32 is capable of supporting several types of RAM chips, ESP-IDF currently only supports Espressif branded PSRAM chips (e.g., ESP-PSRAM32, ESP-PSRAM64, etc).

MicroController
Posts: 2661
Joined: Mon Oct 17, 2022 7:38 pm
Location: Europe, Germany

Re: PSRAM chip used in ESP32-S3-WROOM-2-N32R16V module

Postby MicroController » Tue Jan 27, 2026 8:38 am


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