DCD1RI/CLK2GND3D+4D-5VDD6VREGIN7VBUS8RSTb9NC10SUSPENDb11SUSPEND12CHREN13CHR114CHR015GPIO.3/WAKEUP16GPIO.2/RS48517GPIO.1/RXT18GPIO.0/TXT19GPIO.620GPIO.521GPIO.422CTS23RTS24RXD25TXD26DSR27DTR28EP29