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HSI/MSI calibration

Question asked by Daniel Tarrago on Mar 2, 2017
Latest reply on Mar 3, 2017 by Daniel Tarrago


I'm developing my application based on the STM32L475.

One of my goals is power consumption so I will set the STM32 to Stop1 mode.

I have to work with UART and I2C so, to work in Stop1 mode I need the HSI16 to be setup with these peripherals to work at this low power mode.

Is it required to calibrate this HSI16 (X-CUBE-RC-CALIB) or is it enough with calibration that already comes with the micro?

I have LSE and HSE availables in my prototype, altough I think HSE will not be used if I want to get optimal power consumption figures.

Any other useful information related to this low power mode and clocks will be well wellcome.

Best regards.