tomu.im.v0e4
LEDO/1 connected via resistors R2/R1 respectively
USB D+/D- connected via resistors R4/R3 respectively
(5) LEDO LED1 (1) new ino.4(7) RESET +3.3v (2) — (10) LEUO_TX ee (7) LEUO- RX : 7 0BG_SWDIO (20) = 0) GND 7 ett 286-SWCLK (19) (15) USB +>) (easton GND (0)
tomu.im 0.4 pin-outs See EFM32HG309 datasheet for detail on alternate pin functionality