STM32h725 FMC problem

ATymo.1 · ‎2021-09-10

Hello. I cerate new project for stm32h725zgt chip and can't activate any of FMC interfaces. It's not active. On stm32f767vgt in past all was ok. What I now do incorrect?

How I can to fix this problem?

TDK · ‎2021-09-10

SDRAM isn't supported on the STM32H725 in a LQFP144 package. The required pins are not broken out.

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Cartu38 OpenDev · ‎2021-09-10

Works for me first guess (Win10 / IDE 1.7.0)

ATymo.1 · ‎2021-09-10

Thanks for answer.

I have win10

I Just create a project and activate "clock and chip enable" in SDRAM1 section of FMC. Any other field is stay inactive after activatation. On popup window written "Data disabled: Internal bank number disabled". In other section ("NOR Flash/PSRAM....") same situation in any configuration

ATymo.1 · ‎2021-09-10

Problem, that its not activated after "clock and chip enable" enabling

TDK · ‎2021-09-10

SDRAM isn't supported on the STM32H725 in a LQFP144 package. The required pins are not broken out.

If you feel a post has answered your question, please click "Accept as Solution".

Khouloud OTHMAN · ‎2021-09-16

Hello @ATymo.1 ,

Thanks for your feedback.

Actually, as already stated by @TDK , STM32H725ZGTx does not support the SDRAMs. Referring to STM32H725xE/G datasheet , the SDRAM1 is only available for H725Axx and H725Ixx:

With this being said, the the current implementation of the FMC for H725 devices in STM32CubeMX will be reviewed and updated in a near future release.

I'll keep you posted with the updates.

Thanks for your contribution.

Khouloud.