Hi Jesus,

According to:
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The minimum possible frequency for MCLK when using DCO1 oscillator as clock source is 188KHz, which is out of the range given in your previous reply.

The maximum recommended is 4 times the frequency of DCO2 to prevent a sudden load change that could cause a brownout reset when entering sleep or deep sleep mode
Could you please help us to clarify the following topics?
  1. Is there a risk to generate a sudden load change that could cause a brownout reset when going to sleep/deep-sleep with MCLK=188KHz?
  2. Does it mean that usage of DCO1 as clock source for MCLK IS NOT compatible with sleep/deep-sleep mode?

Thank you and BR.