FRDM-MCXA153 Y1 Crystal

[joseph_lindula]

Hello, I'm using the FRDM-MCXA153 Eval Kit and I would like to know the purpose of the Y1 Crystal. I see that it is an 8Mhz crystal but it is not populated. Do I need to add that part on the board?

Thank you

[Alice_Yang]

Hi @joseph_lindula 

Y1 is the reserved footprint for the external 8 MHz crystal on the MCX A153. It is not populated by default on the FRDM-MCXA153 production board. Unless you specifically need to enable an external crystal clock source, there is no need to install it.

Thank you.

BR

Alice

[db16122]

AN14798 System Oscillator Usage for MCX A series

Frequency is the main parameter for selecting the crystal. For MCX A series MCU, 8 MHz~50 MHz are supported

[joseph_lindula]

What's the purpose of the crystal?