Esp32-c3 Crystal? - SOLVED

Hello I been looking around on the Esp32-c3 Crystal. There are many talks about it. However The crystal in each talk is different. I saw 32.758khz. I also saw 40Mhz and 42mhz crystal. Which crystal is needed please? So I can make this work.

Joseph

Hi

Currently : 40Mhz a, ccording to ESP32-C3 Hardware design document (p9, 2.4.1 External Clock Source)
https://www.espressif.com/sites/default/files/documentation/esp32-c3_hardware_design_guidelines_en.pdf

32.768kHZ crystal is for RTC clock (optional)

Thank you. I didn't even see that PDF before. is it 10ppm or 20ppm. when I search for 40mhz 10ppm it comes up in mouser for 20ppm. Again thank you.

Joseph

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