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Interfacing STM32F205RBT6 to max232

Question asked by A2 on Aug 1, 2014
Latest reply on Aug 1, 2014 by Clive One
Hi,

Can I interface directly max232 to STM32F205RBT6.
I have given 5V to VCC of max232 & 3.3V to vcc of STM32.

1. In datasheet of max232, it is given that Vih = 2V. So my 3.3V signal from STM32 will serve the purpose of txd

2. In case of rxd, 5V signal will come from max232 to STM32. Are STM32 pins are 5V tolerant in case I configured them for uart?

3. I have place 150ohm resistor each in between txd & rxd connections of both IC.

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