2017-02-28 07:50 AM
Hi,
In x-NUCLEO-IDW01M1 -WHY level shifter(3.3v to 2.5v ) is used in the board?
RTS and CTS are tolerent to 5v but it is shifted to 2.5v,why?
2017-02-28 10:35 AM
Being tolerant and having undesirable current flows are two different things. The boards targets low power / low voltage applications. A significant number of pins aren't tolerant, and a robust design will likely need you to work in the 2.5V domain.