Nucleo-H723ZG, digital pin appears to be listed as analog&digital (?)

[LysAn]

Dear all,

in a project which was assigned to me with the NUCLEO-H723ZG, I have multiple digital outputs, like PG12, PE9, PE11, PE14, PE13, PG14 et.c. mostly originating from the CN10 ZIO connector, where the pin names are intuitive, e.g. D7, D6, D5, et.c..
However one of the digital outputs, has the description PF10/ PB8 and it originates from the CN9 ZIO connector, with the pin name A5. 

It puzzles me that a digital port is connected to a pin name called A5, which also has the signal name "ADC".

The attached image from the UM2407 User Manual illustrates that.

Many thanks for your support

Kind regards

[Tesla DeLorean]

This is more of an Arduino designation. Option to connect to ADC pins, or escape a secondary I2C bus common on a number of shield interfaces.

If you check the schematic, see "CAD Resources" tab on product page, you'll see connectivity and solder-bridging / Zero-Ohm jumpering options for the pin connectivity.

>>It puzzles me that a digital port is connected..

Perhaps don't over-think things, this isn't a one-dimensional problem.

[Tesla DeLorean]

https://www.st.com/en/evaluation-tools/nucleo-h723zg.html#cad-resources

https://www.st.com/resource/en/schematic_pack/mb1364-h723zg-e01_schematic.pdf

For pin designations / functional mapping/muxing options see Data Sheet

https://www.st.com/en/microcontrollers-microprocessors/stm32h723zg.html

https://www.st.com/resource/en/datasheet/stm32h723zg.pdf

 

[Andrew Neil]

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@LysAn wrote:

It puzzles me that a digital port is connected to a pin name called A5, which also has the signal name "ADC".

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The STM32 ADC inputs share pins with GPIO - they can be used as either analogue or GPIO; eg,

https://www.st.com/resource/en/datasheet/stm32h723zg.pdf#page=58

 

PS

Similarly for analogue (DAC) outputs; eg,

 

See also: https://community.st.com/t5/stm32-mcus-products/spi-vs-gpio-alternate-functions-af/m-p/760590/highlight/true#M270346