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TKuo.1
Associate III
Feb 21, 2022 8:37 AM UTC
Solved

STM32H755ZIT6 - Why I can't select SRAM in FMC memory type option?

I'm using STM32H755ZIT6 MCU. And I want to choose SRAM in the FMC memory type option. However, it doesn't show up in the drop-down menu. What am I missing here?

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0693W00000KZsoZQAT.png

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TDK
TDKBest answer
Feb 21, 2022 2:58 PM UTC

The package is probably missing the necessary pins for the SRAM.

Yep, looks like the LQFP144 doesn't have the FMC_A0 pin broken out.

0693W00000KZxIJQA1.png

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2 replies

TDK
TDKBest answer
Feb 21, 2022 2:58 PM UTC

The package is probably missing the necessary pins for the SRAM.

Yep, looks like the LQFP144 doesn't have the FMC_A0 pin broken out.

0693W00000KZxIJQA1.png

"If you feel a post has answered your question, please click ""Accept as Solution""."
TKuo.1
TKuo.1Author
Associate III
Feb 21, 2022 7:58 PM UTC

Thanks for the information! I understand it now.