STM32G0 ADC channels availability and GPIO mapping

[AndFel]

Hi There, 

I am currently using the STM32G050C8T6 (LQFP48) and would like to use PA11 as an ADC input, based on the datasheet: DS13514 - Rev 2 specifically table 12, it appears it can be used as ADC_IN15, However in STM32Cube IDE , PA11 can not be assigned to ADC_IN15, I understand that in fully configurable sequencer mode only inputs from 0 to 14 can be used, however in either mode PA11 can not be assigned to ADC_IN15 in Cube. 

Finally, the main question is which is correct Cube or the datasheet, and would like to make sure this is not a hardware limitation or mistake in the documentation ? 

Thanks in advance, 

 

[AndFel]

Anybody from ST to confirm/correct or deny the datasheet inconsistency ? , it seems important enough to have an inconsistency around ADC channels availability and GPIO mapping in the datasheet, However the latest update to the datasheet for the STM32G050C8T6 was done on June 2022. 

[Karl Yamashita]

Probably a typo. PA11 looks to be an alternative pin to the Regular EXTI Conversion Trigger. By default PB11 is selected but you can override and select PA11.

 

ANx inputs are typically on 1 pin only. If you do a search and IF there is an alternative pin, it'll highlight (shaded black) more than one pin. In this case, ADC1_IN15 only highlights 1 pin, PB11. 

 

An example is if I wanted to see if there is another alternative pin for USART2_RX. This shows there are 2 pin locations indicated by shading the pin black.

 

 

 

[AndFel]

Hi @Karl Yamashita , 

Thanks for your response. 

It is not only more than a typo, it is incorrect and misleading on the Datasheet, which should be the source of truth for any part. 

I would have thought something like this should be fixed and updated on the Datasheet, are there any plans to update this by ST ? (Last update done on June 2022). 

Otherwise as users where do we look for the source of truth ?