VDD_IO1TAD22VDD_D3XTO4XTI5GND_D6VDD_A7VDD8VDD_RF9VDD_TX10VDD_AM11GND_DR112RFO113VDD_DR14RFO215GND_DR216EXT_LM17AAT_A18AAT_B19I2C_EN20VSS21RFI122RFI223AGDC24TAD125GND_A26IRQ27MCU_CLK28BSS29SCLK/SCL30MOSI31MISO/SDA32EP33