3.3V to 5V communication

Discussion created by lpcware Employee on Jun 15, 2016
Latest reply on Jun 15, 2016 by lpcware
Content originally posted in LPCWare by Hubert Wu on Tue Apr 27 19:02:38 MST 2010

I want to use SPI and UART of LPC1111 to communicaiton with 5V system. As we know the I/O has 5V tolerant. Should I add any components with that? If I add pull high resistor to 5V only. Is that OK?