Reference Design – STM32H745IIT6 with External SDRAM (IS42S83200J)

[Sakthi_IND]

Hi Team

Am working on a custom hardware design using the STM32H745IIT6 microcontroller and interfacing it with an external SDRAM   IS42S83200J-7TLI.

 Any available reference designs, including:

• Schematic diagrams
• PCB layout design files 
• Application notes or design guidelines specific to STM32H7 FMC/SDRAM interface

If anyone has experience with a similar configuration or can share reference projects, evaluation boards, or design tips—especially related to signal integrity, routing, or SDRAM timing configuration—it would be very helpful.

Regards,

Sathiya

[mƎALLEm]

Hello,

You can inspire from the STM32H747I-EVAL schematic.

That's not the same SDRAM part number you are planning to use but the principal is the same.

The gerber files over here.

[Sakthi_IND]

Hi mƎALLEm,

Thanks for sharing the information.

We are currently facing challenges with the PCB layout for the SDRAM design, specifically related to length matching, routing, and other layout constraints.
I was able to open the STM32H747I-EVAL schematic in Altium, but the PCB design file is not opening. Do you have a

separate or complete set of design files available for reference?

Regards,
Sathiya

[mƎALLEm · Accepted solution]

All CAD resources are provided in "CAD resources" tab in the Eval board page. Unfortunately, I don't have more than that to provide for that board. 

Perharps, look at STM32H743I-EVAL board page / CAR ressources:

The indicated zip file contains the layout and the Altium designer files.

The schematics are available over here.

SDRAM part:

You can also refer to the AN4803 "High-speed SI simulations using IBIS and board-level simulations using HyperLynx® SI on STM32 MCUs and MPUs"

Hope that helps.

[mƎALLEm]

@Sakthi_IND Same thing here.

If you find your question answered please accept as solution the post that provided the solution.

We are providing efforts on the community and we need to close as much as possible the resolved cases to give more visibility for other users to help them to find efficiently this solution.

Thank you.