STM32F4 Discovery and Pl2303 combination for UART

[Wond3rboy]

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.

 

[Nigel Goodwin]

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

 

[Wond3rboy]

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.

 

[Nigel Goodwin]

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.

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:

https://www.electro-tech-online.com/threads/cheap-stm32-modules.150349/

 

[Wond3rboy]

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

Thanks for pointing this out Nigel!

 

[Nigel Goodwin]

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

I like cheap!

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