Hello!
What specific PSRAM chips are supported by the ESP32?
I know that the APM6404 and IPS6404 are both supported.
Are any ISSI chips supported?
Thanks!
Supported PSRAM Chips
Re: Supported PSRAM Chips
Hi twoface,
Officially the only supported chips are ESP-PSRAM32, ESP-PSRAM64, ESP-PSRAM64H.
There are PSRAM chips available from other manufacturers that have been used in products and these appear to work fine. However guaranteeing that a particular PSRAM chip model & revision works correctly in all situations is relatively complex (there is no official standard for these), so at the moment only the Espressif-branded chips are officially supported by Espressif.
I don't know if anyone has tried to use an ISSI PSRAM chip with an ESP32. If you're developing a product then suggest contacting Espressif sales to get a price for the officially supported PSRAM in your planned quantities.
Angus
Officially the only supported chips are ESP-PSRAM32, ESP-PSRAM64, ESP-PSRAM64H.
There are PSRAM chips available from other manufacturers that have been used in products and these appear to work fine. However guaranteeing that a particular PSRAM chip model & revision works correctly in all situations is relatively complex (there is no official standard for these), so at the moment only the Espressif-branded chips are officially supported by Espressif.
I don't know if anyone has tried to use an ISSI PSRAM chip with an ESP32. If you're developing a product then suggest contacting Espressif sales to get a price for the officially supported PSRAM in your planned quantities.
Angus
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