What are the supported PSRAM chips? (IDFGH-10795)

[krupis]

Answers checklist.

• [X] I have read the documentation ESP-IDF Programming Guide and the issue is not addressed there.
• [X] I have updated my IDF branch (master or release) to the latest version and checked that the issue is present there.
• [X] I have searched the issue tracker for a similar issue and not found a similar issue.

General issue report

Hello. I am looking into possibility to extend RAM on ESP32-S3 device.

I want to know what are the supported PSRAM chips as I cannot find any information regarding this. One board that I have (T-Display RGB from LilyGO has the external 8MB PSRAM) and I think its the following chip:

However they do not show this in their schematic so I cant tell what PSRAM chip is it.

1. Can someone provide information on what are currently supported PSRAM chips?
2. Can someone help identify the PSRAM chip on the screenshot above?
3. Is it possible to buy such PSRAM on digikey/farnell/mouser?

[huming2207]

Have a look on these:

• 8MB: LY68L6400 or APS6408 or ESP-PSRAM64H - these PSRAM chips are officially supported by ESP-IDF I believe. Mouser sells APS6408, and there are a lot of sellers on Taobao/AliExpress selling LY68L6400 or ESP-PSRAM64H.
• 16MB: APS12808L-3OBM-BA looks good to me. I've made a board earlier and briefly tested for my stuff.

But AFAIK it seems like no one actually made any modules with a 16MB (or larger) PSRAM chip or using these chips in a commercial product. Maybe people are waiting for ESP32P4??