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Is it possible to maintain the HSE clock in stop mode 2?

TheLoneRanger
Associate II

Howdy,

I am working with the STM32U575 and wanting to use the lower power capabilities of the ADF. The problem is that, for me to get the use I am looking for out of the ADF, I need to operate it constantly at 4 MHz. For this reason, I want to maintain the HSE when the system enters stop mode 2. I know that this is not directly supported, but I was wondering if there is a way to do this anyway. I was also thinking that it could be possible to disable all the peripherals manually in a similar way as stop mode 2 and put the system in sleep mode. My one hesitation for this method is that I would need to dedicate so much time to finding every peripheral's interrupt register and disabling them. Any suggestions on how I should handle this would be much appreciated. Hope you all have a wonderful day. :)

1 ACCEPTED SOLUTION

Accepted Solutions
Uwe Bonnes
Principal III

Did you consider MSIK?

View solution in original post

2 REPLIES 2
Uwe Bonnes
Principal III

Did you consider MSIK?

Hi Uwe,

this is exactly what I was looking for. Thank you so much.