connecting an XTAL with an STM32L412

[deep_rune]

I want to connect an (HSE) crystal with an STM32L412 - I see from the cubeIDE ports that PA0 is the CK_IN, but I've always used xtals with two ends - where does the other end of the xtal connect to? Ground?

[Tesla DeLorean]

Need to use an oscillator, like a TCXO, or existing clock source in your system

[deep_rune]

sorry i don't understand... i just want to use an external crystal to time my chip, how can i do this? do i need to use the RCC osc pins? Im not sure

[Tesla DeLorean]

You have to make the crystal oscillate externally, you could use a pair of inverters if you insist on doing it from scratch​