VCC_GPS_3V3 7 C F u 0 1 6 C F u 1 4 C F n 0 1 GND GND GND RF_UART_RX RF_UART_TX 1 1 R11 100R R2 100R 2 2 GPS_TX GPS_RX D N G GPS_TX GPS_RX VCC_GPS_3V3 U5 1 2 3 4 5 6 7 8 9 GND TXD RXD TIMEPULSE EXTINT V_BCKP VCC_IO VCC RESET GPS_VK1097U7M3 NC SCL2 SDA2 V_ANT/NC VCC_RF ANT_ON GND RF_IN GND 18 17 16 15 14 13 12 11 10 C5 33pF C19 1pF D N G VANT_EN ANT_ON 1 L H n 0 1 D N G GND 1 1 J1 1PIN J3 1PIN VCC_MPU_3V3 J5 VCC_MPU_3V3 D N G SCL SDA 1 2 3 4 5 6 7 8 9 10 9 C F u 1 8 C F n 0 1 CON_10P GND GND VCC_MCU_3V3 J6 1 2 CON2 3 C F u 0 1 2 C F u 1 1 C F n 0 1 GND GND GND GND VCC_MCU_3V3 J2 1 2 3 4 CON4 RF_UART_TX RF_UART_RX VCC_MCU_3V3 D N G VANT_EN ANT_ON SCL SDA MPU_PWR_CTRL R4 2 R5 100R 2 100R RF_SWDIO RF_SWDCLK 1 1 U2 GND GND RF-IO GND GND PA0 NRST PC13 PB9 PB8 PB7 PB6 PB5 26 25 24 23 22 21 20 19 18 17 16 15 14 1 2 3 4 5 6 7 8 9 10 11 12 13 GND VCC PA8 PA9 PA15 PB12 PB13 PB14 PB15 PA11 PA12 PA13 PA14 NP_MOTE GND L2 10nH GND 0 1 C F u 1 1 1 C F u 1 RF_IN RF_IN J4 1 1PIN GND GND RF_NRST RF_NRST LED GPS_PWR_CTRL RF_UART_RX RF_UART_TX VCC_MCU_3V3 2 5 2 R K 0 1 1 7 2 C F u 1 GND D E L D6 LED 1 2 2 K 1 2 4 R 1 GND VCC_MCU_3V3 VCC_GPS_3V3 VCC_MCU_3V3 VCC_MPU_3V3 2 1 R K 0 1 1 GPS_PWR_CTRL 1 B T E F S O M _ P 2 Q 2 3 1 3 C DIGITAL_NPN Q1 E 2 GND 2 3 R K 0 1 1 MPU_PWR_CTRL 1 B T E F S O M _ P 3 Q 2 3 1 3 C DIGITAL_NPN Q4 E 2 GND J12 1 2 3 4 5 CON5 VCC_MCU_3V3 RF_SWDIO RF_SWDCLK GND RF_NRST