I use External Crystal 1.8V,27MHz.
I connect External Cyrstal output to XTALP pin(115).
But I don't know XTALN pin treatment.
Can you give me some infomation?
usually (with other devices) you can leave it open.
Reinhard is correct, XTALN pin is an output so you can leave it open
Thank you for your Infomation!
Now, I can design circuit board in good hands.
Thank you for your reply!
I think so, but I coudn't find internal circuit from datasheet.
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