Regarding ANA pins of STM microcontrollers

[AkshayMR]

We are using STM32H743IIK6 microcontroller. There are analog only pins, designated as ANA. What is the use of these pins? Also, what will be the difference when GPIO is used for analog functionality and ANA pins are used for the same purpose?

 

[Muhammed Güler]

Each extra feature assigned to the pin means extra capacitive effect. only analog pins are for high ADC speeds. As you can see in the 16-bit ADC characteristics section in the datasheet, they can operate with lower sampling times than other ADC pins.

[AScha.3]

You mean this :

?

+

AND then from chip errata :

So you can use them, as you like , just be aware : these pins are connected by a small analog switch and will not survive > 1 mA in or out current. (And i know...i tested it and can confirm: then pin function is gone...)