VCCIO1RXD2RI#3GND4NC5DSR#6DCD#7CTS#8CBUS49CBUS210CBUS311NC12NC13USBDP14USBDM153V3OUT16GND17RESET#18VCC19GND20CBUS121CBUS022NC23AGND24NC25TEST26OSCI27OSCO28NC29TXD30DTR#31RTS#32EP33