RI/CLK1GND2D+3D-4VIO5VDD6VREGIN7VBUS8RSTb9NC10GPIO.3/WAKEUP11GPIO.2/RS48512GPIO.1/RXT13GPIO.0/TXT14SUSPENDb15NC16SUSPEND17CTS18RTS19RXD20TXD21DSR22DTR23DCD24GND25