Is it possible to erase STM32c01x Memory in smaller units than the Page?

[KenLee]

Hello, I am using STM32C011F4U6 MCU.

As I mentioned, I wonder if it is possible to do Erase in units smaller than Page.
The specification does not describe such a function, but is this function possible?

[Peter BENSCH]

Flash erasure in STM32 is only possible in multiples of pages, it cannot performed in smaller chunks of memory. The RM0490 also describes this in detail, e.g. in section 3.3.6.

Hope that answers your question?

Regards
/Peter

[Uwe Bonnes]

You can  however "invalidate" already programmed chunks of 64 bits by writing 64-bits of all zero. 

[Andrew Neil]

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@Uwe Bonnes wrote:

You can  however "invalidate" already programmed chunks of 64 bits by writing 64-bits of all zero. 

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+1

@KenLee for more on this, see:

https://community.st.com/t5/stm32-mcus-embedded-software/issues-with-x-cube-eeprom/m-p/663034/highlight/true#M47011

(probably also worth reading the rest of that thread)