I want to select a controller to design a energy meter. Is it necessary that controller should have EEPROM memory in built?

[PKuma.12]

I am really confused that is it necessary or not. Because if I am going to the series STM32F030 these controller doesn't have in built EEPROM memory.

[Tesla DeLorean]

Perhaps look at using the L0 series parts instead.​

[PKuma.12]

My question is that could I used a controller without EEPROM for my application?

[Tesla DeLorean]

Perhaps you work with someone who has a better grasp of the project requirements and specific use cases?

If you have a value that is constantly changing, and must be remembered, I don't think FLASH is appropriate, at the very least it is not the best choice.

[PKuma.12]

Yes as because it is energy meter so its value will be continuously change.

so you mean that EEPROM must be present to store values?

[Tesla DeLorean]

No, I'm saying that FLASH is perhaps the least suitable. Data could be journalled, and spread across multiple pages, to mitigate wear and failure.

Perhaps think about NVRAM (RTC/BKPRAM)

What design choices are driving the use of the F0 over the L0 parts?

[PKuma.12]

As because of the cost reduction.

Thank you for the answer.