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K22 controller pin(TXD and RXD uart pins) operated on 5V (external device working on 5V supply)?

Question asked by Sharad patil on Apr 25, 2017
Latest reply on Apr 27, 2017 by Robin_Shen



I am working on UART communication module of MK22FX512VMC12 controller. K22 controller operated on 3.3V supply and external communication module operated on 5V communication is working properly with external module.


As per datasheet gpio pins operated on 5V  but no idea about uart communication module operating pin voltage 5V.



Is it ok if i connect K22 controller UART pins(Txd, Rxd) to 5V operated module(Txd ,Rxd pins) ?