Are STM32F401CCU6 and STM32F401CEU6 equivalent?

JEngineerHW · ‎2026-01-27

I am asking this question because I am a relatively new engineer working with STM32 and Cube IDE.

When choosing the MCU to create a new project for my new board containing the STM32F401CCU6, I see that it is not listed and only STM32F401CEU6 appears. Can I create the project based on this model number and will everything work the same? I wanted to try it myself, but today has been a tough day, so I would appreciate your help with an answer tomorrow when I get to the office to save time.

Thank you in advance.

TDK · ‎2026-01-27

> Can I create the project based on this model number and will everything work the same?

In terms of code and peripherals, yes. But the flash and RAM sizes are different, so you would need to change those in the linker script.

STM32F401CCU6 it shows up for me. Maybe you need to update STM32CubeMX.

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View solution in original post

TDK · ‎2026-01-27

> Can I create the project based on this model number and will everything work the same?

In terms of code and peripherals, yes. But the flash and RAM sizes are different, so you would need to change those in the linker script.

STM32F401CCU6 it shows up for me. Maybe you need to update STM32CubeMX.

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

JEngineerHW · ‎2026-01-28

I've got it now.
I don't usually do the configuration in CubeMX, I like to go straight to CubeIDE. Following your suggestion in CubeMX, I looked for it in MCU/MPU Selector and found it, marked it as a favorite, searched again in CubeIDE, and it appeared! I don't really know if marking it as a favorite in CubeMX solved the problem, but it works now.
Thank you TDK.