Maximum Safe voltage on GPIO Pin

[HThak.2]

I am a newbie here. I have purchased a STM32G071 Nucleo-64 development board. I wish to interface it to the 5 volts signal(s). The intended interface pins are PB1, PB3 and PB4. The Absolute Maximum ratings VIN states:-

1) Input voltage on FT_xx pins except FT_c = VDD + 4.0 max

2) Input voltage on FT_c pins = 5.5 max

3) Input voltage on any other pin = 4.0 volts max

My Question: -

What are FT_xx pins and FT_c pins? Its not mandatory to use the pins PB1, PB3 and PB4 as listed above, I can use a suitable alternative.

[Mike_ST]

These are the internal pin structures.

Please check STM32G071RB datasheet, Table 11, page 41.