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STM32F4 Discovery and Pl2303 combination for UART

Discussion in 'ARM' started by Wond3rboy, Apr 13, 2017.

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  1. Wond3rboy

    Wond3rboy Member

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    Hello

    I was wanted to perform UART communication using the STM32F4 discovery and the PL2303 USB to TTL converter. However, since the PL2303 works with 5V logic (and I don't have the soldering skills to change pin 4s voltage by the way). Given that the STM32F4s pins are 5V tolerant, should I try to use it or is it going to damage the board?

    Thanks.
     
  2. Nigel Goodwin

    Nigel Goodwin Super Moderator Most Helpful Member

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    As long as the pins are 5V tolerant it should be fine - bear in mind though that not all the pins are!.
     
  3. Wond3rboy

    Wond3rboy Member

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    Hi Nigel

    Thanks for the reply.

    I thought all pins were 5V tolerant. I will go and read up on this further before I attempt to perform UART communication.
     
  4. dave

    Dave New Member

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  5. Nigel Goodwin

    Nigel Goodwin Super Moderator Most Helpful Member

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    Check this thread that I started a little while ago, where I posted a diagram of the pins, and their capabilities - that should give you some idea:

    http://www.electro-tech-online.com/threads/cheap-stm32-modules.150349/
     
  6. Wond3rboy

    Wond3rboy Member

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    Oh wow! I didn't know that board was available. And cheap!

    Thanks for pointing this out Nigel!
     
  7. Nigel Goodwin

    Nigel Goodwin Super Moderator Most Helpful Member

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    I like cheap! :D

    I didn't want the board, I didn't need the board - but it was so cheap I had to order some :D
     

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