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Hi, I am trying to connect ESP8266 module to STM32F429ZI so I am wondering if (and which) transmit pins of UART transmit max voltage of 3.3V (not 5V)? Thanks in advance!

MCulj.1
Associate

‎2020-12-22 7:44 AM

 
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TDK
Super User

‎2020-12-22 8:41 AM

All STM32F4 pins transmit at 3.3V (or whatever your VDD is). None of them transmit at 5V, although most of them are 5V tolerant for input signals.

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