STM32F20xxx Datasheet PA4/PA5 TTa or FT? - STMicroelectronics Community

Posted on October 18, 2016 at 02:36

Hi everyone,

I'm a bit puzzled when I'm looking at the pinout part of the STM32F20xxx datasheet (p. 47).

In there, it says that pins PA4 and PA5 are of type TTa (3.3V tolerant) BUT have a little note (4) saying ''FT = 5 V tolerant except when in analog mode or oscillator mode (for PC14, PC15, PH0 and PH1).''

What do I make from this? Why put that note there if the pins are only TTa anyway? But then, they're the ONLY two pins in the whole chip being TTa. Could it be that they're actually FT and this is a typo?

2 REPLIES 2

Posted on November 01, 2016 at 15:34

Hi Valentin,

Pins PA4 and PA5 are TTa. The note (4) shouldn't be placed there.

Please note that an internal request is raised to remove the reference to this note for PA4 and PA5 from F2/F4/F7 datasheets.

-Mayla-

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Posted on November 01, 2016 at 22:10

Thanks for clarification, Mayla.

Much appreciated 🙂