About DReis.2

DReis.2 · 2022-01-19

Hi,I'm facing this weird behavior with many STM32H7A3ZIT6 parts, where after we flash our Firmware, the MCU do not work and when we read the flash content, we can notice that one flash bank (1MB) is either corrupted with random data or erased. Someti...

DReis.2 · 2021-10-14

Hi,I work with a development team that is developing a product that has a STM32L4S9 MCU and a IS66WVH8M8ALL-100 HyperBus PSRAM.Recently, we found in the STM32L4 Errata that actually this MCU does not support PSRAM. We noticed that the self-refresh wa...

DReis.2 · 2021-10-07

I am trying to use the OCTOSPI2 (connector MB1242) in dev kit STM32H7B3I-EVAL with the Hypebus PSRAM IS66WVH8M8ALL-100.I successfully configured the memory to write and read in memory map mode, however this can only be done if the write is immediatel...

DReis.2 · 2022-01-19

@Community member When the MCU enters this state, and I remove all power supply and wait, I'm able to write the entire flash, but eventually the problem appears again after running for awhileThe MCU part I am using is LDO only, configured with VOS0 ...

DReis.2 · 2021-11-29

Thanks for your reply @Alex - APMemory We do run our IS66WVH8M8ALL with framebuffer the same way (16 bit color), and it works. However we had problems using more general data, so we decided changing to STM32H7 MCU to fully support the OSPI PSRAM.Bes...

DReis.2 · 2021-10-08

ChahinezC Thank you for the tip. I actually found that I forgot to fit resistor R75 in the EVAL board.Now everything is working fine

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STM32H7A3ZIT6 Half Flash Bricked/Corrupted

STM32L4S9 OctoSPI PSRAM support

OctoSPI HYPERBUS PSRAM Memory Mapped - STM32H7B3I-EVAL

Re: STM32H7A3ZIT6 Half Flash Bricked/Corrupted

Re: STM32L4S9 OctoSPI PSRAM support

Re: OctoSPI HYPERBUS PSRAM Memory Mapped - STM32H7B3I-EVAL