VCCIO1RXD2RI#3GND4GPIO55DSR#6DCD#7CTS#8GPIO49GPIO210GPIO311GPIO612GPIO713USBDP14USBDM15VCCD16GND17RESET#18VCC19GND20GPIO121GPIO022DNU23AGND24DNU25DNU26DNU27DNU28DNU29TXD30DTR#31RTS#32EXP33