VBAT11VR_ANA2VR_DIG3XTA4XTB5RESET6NC7NC8DIO09DIO110DIO211DIO312DIO413DIO514VBAT215GND16SCK17MISO18MOSI19NSS20RF_MOD21GND22RXTX23RFO24RFI25GND26PA_BOOST27VR_PA28EP29