STM32G0 backup registers need LSE clock to work?

[smogn.1]

Hi,

I'm wondering if I can use STM32G0 backup registers without needing LSE clock (using only Vbat voltage) or if LSE clock is mandatory for them working.

I didn't find a clear answer neither in datasheet nor in reference manual.

Thanks in Advance.

Silvio Mogno

[Chloe Meunier]

Hello,

Backup registers don't need LSE clock, you can use the clock you want.

BR

Chloé

[smogn.1]

Thanks for your answer but,

Do backup registers retain data with only VBat power without "any" clock?

In other word, are backup register static RAM?

Thanks for your patience.

Silvio Mogno

[TDK · Accepted solution]

> Do backup registers retain data with only VBat power without "any" clock?

Yes.

[smogn.1]

Thanks!

Silvio Mogno