LattePanda 3 Delta Leonardo Arduino Interface Pins

userHead DavidAshman 2024-02-15 02:21:39 289 Views3 Replies

I'm designing a daughterboard PCB to interface with the LattePanda 3 Delta "Arduino" connector pins.  


I cannot find any information confirming what LattePanda pins labeled RXD1 and TXD1 are connected to on the internal ATmega32u4.  Can I assume that RXD1 is routed to pin 20 and TXD1 to pin 21 on the 44-pin package?


Also, is there a LattePanda pin routed to the internal ATmega32u4 pin 8 for SPI select?


Thanks in advance!