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Visitor II
April 11, 2023
Question

Is it possible to use an external SRAM QSPI chip with the STM32G4 to expand the 128KB of SRAM?

  • April 11, 2023
  • 2 replies
  • 1153 views

The hope is to use the STM32G4 to run FreeRTOS. Doesn't seem like the current implementation will fit within 128KB, but I don't have enough pins available to use the FSMC. Is there any way to use something like the apmemory IoT RAM (can't post the link as new member, but if you search "IoT ram stm32" it's the result) chips to increase the SRAM?

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    2 replies

    Visitor II
    April 11, 2023

    We used apmemory's PSRAM chips on WB5MMG QSPI bus. It runs pretty well. It is indirect mode for data storage. -wq

    Explorer
    October 9, 2023

    fyi, APMemory QSPI SDR PSRAM APS1604M.../APS6404L.../APS12804O... could work on NOR controller but with no Memory mapped Write mode limitation. 

    Alex