setting sequencer option to "fully configurable" hides channels IN17...IN22. Why?

[curiocity]

 

In CUBE MX I have selected the microcontroller STM32C071CBT6 When I set the sequencer option to "sequencer set to fully configurable" then the channels IN17 IN18 IN19 IN20 IN21 IN22 are hidden why?  is there any limitation for that channels or anything else?

[KnarfB]

>  then the channels IN17 IN18 IN19 IN20 IN21 IN22 are hidden

correct. See reference manual  RM0490 Rev 5, 16.4.8 Channel selection (CHSEL, SCANDIR, CHSELRMOD).

Why? The ADC_CHSELR register uses 4-bit per channel in that mode.

hth

KnarfB

 

[curiocity]

Thanks that helps me