Atmel ATSAMG55J19 microcontroller
Embedded debugger (EDBG)
USB interface
Programming and debugging (target) through Serial Wire Debug (SWD)
Virtual COM-port interface to target via UART
Atmel Data Gateway interface (DGI) to target via USART or TWI
Four GPIOs connected to target for code instrumentation
Target USB connection with Host and Device support
Digital I/O
Two mechanical buttons (including one reset button)
One user LED
Three extension headers
I2C interface for SAM G55 high speed I2C slave
Three possible power sources
External power
Embedded debugger USB
Target USB
32kHz crystal