Hi Kenta,
You can go to downloads page of FRDM-K82F: NXP Freedom Development Platform for Kinetis K82, K81, and K80 MCUs and download the FRDM-K82F - Printed Circuit Board bill of materials and design files.
The schematic can be found in that folder named "spf-28748_b2.pdf".
Best Regards,
Robin
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