Are those pins serial ports,
It almost looks like the first serial port RX pin is connected to the pin #0.
No. Not with the meaning of serial that you mean.They are other forms of I/O, see the data sheet for what.
They are marked as Usart on datasheet.
Please enter a valid email to subscribe
We need to confirm your email address.
To complete the subscription, please click the link in the
email we just sent you.
Thank you for subscribing!
via Egeo 16