Is it possible to expand the BPI Leaf PSRAM for larger applications by adding memory to the free pads ? I haven’t found any schematics or reference to it anywhere.
The BPI-Leaf-S3 already has 2 MB PSRAM integrated in the ESP32-S3R2 package. The unpopulated pads were reserved in the PCB design for a QSPI PSRAM configuration, but they are not intended as a simple add-on expansion to increase the existing 2 MB PSRAM on the current R2 version.
If you want to use external PSRAM on those pads, you would need to replace the ESP32-S3R2 with a compatible ESP32-S3 variant without integrated PSRAM, and then populate the external PSRAM accordingly.
If you need a larger application binary, please note that PSRAM does not increase program storage; the Leaf-S3 has 8 MB Flash for firmware and data.
The schematic can be found here:
Thank you. Im needing more ram memory in my case, bumping near 7MB. the bpi leaf has good design, battery charge and enough pads for other peripherals, but I will go after some other option, but wanted to be a banana supporter. Thank you !