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michalzet
Associate
July 12, 2025
Solved

[STM32H755ZIT6] DCMI to external SPI PSRAM

  • July 12, 2025
  • 1 reply
  • 298 views

Is it possible to DMA DCMI data to external SPI PSRAM (8MB)? I don't have enough pins to place SDRAM and wish to buffer Camera data.

Best answer by MHoll.2

Yes this should be possible. The OCTO or HyperRAM SPI PSRAM has to be in Memory Mapped mode to do this.

Be award that there are limit's (and Errata's) on some STM32 MCU's when using external PSRAM's.

1 reply

MHoll.2
MHoll.2Best answer
Senior III
July 12, 2025

Yes this should be possible. The OCTO or HyperRAM SPI PSRAM has to be in Memory Mapped mode to do this.

Be award that there are limit's (and Errata's) on some STM32 MCU's when using external PSRAM's.

michalzet
michalzetAuthor
Associate
July 12, 2025

Thank you very much I will try.