4 ### Hardware and Features
11 - Battery Voltage Sensor: yes
12 - Stable voltage regulation,9V/2A DCDC BEC for VTX/camera etc.And could select 5v/9v with pad
13 - Serial LED interface(LED_STRIP)
15 - BARO: QMP6988/BMP280(I2C_1)
20 PERIPHERALS MODES FUNCTIONS PINS
21 ADC1 IN10 ADC1_IN10 PC0
22 ADC1 IN11 ADC1_IN11 PC1
23 ADC1 IN12 ADC1_IN12 PC2
24 I2C1 SMBus-two-wire-Interface I2C1_SCL PB8
25 I2C1 SMBus-two-wire-Interface I2C1_SDA PB9
26 RCC Crystal/Ceramic Resonator RCC_OSC_IN PH0-OSC_IN
27 RCC Crystal/Ceramic Resonator RCC_OSC_OUT PH1-OSC_OUT
28 SPI1 Full-Duplex Master SPI1_MISO PA6
29 SPI1 Full-Duplex Master SPI1_MOSI PA7
30 SPI1 Full-Duplex Master SPI1_SCK PB3
31 SPI1 Hardware NSS Input Signal SPI1_NSS PA4
32 SPI2 Full-Duplex Master SPI2_MISO PB14
33 SPI2 Full-Duplex Master SPI2_MOSI PC3
34 SPI2 Full-Duplex Master SPI2_SCK PB13
35 SPI2 Hardware NSS Output Signal SPI2_NSS PB12
36 SPI3 Full-Duplex Master SPI3_MISO PC11
37 SPI3 Full-Duplex Master SPI3_MOSI PB5
38 SPI3 Full-Duplex Master SPI3_SCK PC10
39 SYS SysTick SYS_VS_Systick VP_SYS_VS_Systick
40 TIM1 Output Compare CH1 TIM1_CH1 PA8
41 TIM1 Output Compare CH3 TIM1_CH3 PA10
42 TIM2 Output Compare CH1 TIM2_CH1 PA5
43 TIM3 Output Compare CH2 TIM3_CH2 PC7
44 TIM3 Output Compare CH3 TIM3_CH3 PB0
45 TIM3 Output Compare CH4 TIM3_CH4 PB1
46 TIM4 Output Compare CH1 TIM4_CH1 PB6
47 TIM8 Output Compare CH1 TIM8_CH1 PC6
48 TIM8 Output Compare CH3 TIM8_CH3 PC8
49 TIM8 Output Compare CH4 TIM8_CH4 PC9
50 TIM12 Input Capture direct mode TIM12_CH2 PB15
51 UART4 Multiprocessor Communication UART4_RX PA1
52 UART4 Multiprocessor Communication UART4_TX PA0-WKUP
53 UART5 Multiprocessor Communication UART5_RX PD2
54 UART5 Multiprocessor Communication UART5_TX PC12
55 USART1 Multiprocessor Communication USART1_RX PB7
56 USART1 Multiprocessor Communication USART1_TX PA9
57 USART2 Multiprocessor Communication USART2_RX PA3
58 USART2 Multiprocessor Communication USART2_TX PA2
59 USART3 Multiprocessor Communication USART3_RX PB11
60 USART3 Multiprocessor Communication USART3_TX PB10
64 Pin Nb PINs FUNCTIONs LABELs
65 2 PC13-ANTI_TAMP GPIO_Output LED0
66 3 PC14-OSC32_IN GPIO_Output Beep
67 5 PH0-OSC_IN RCC_OSC_IN
68 6 PH1-OSC_OUT RCC_OSC_OUT
73 14 PA0-WKUP UART4_TX extend/UART4_TX
81 24 PC4 GPIO_Output SPI1_CS
82 26 PB0 TIM3_CH3 OUPUT1
83 27 PB1 TIM3_CH4 OUPUT6
90 37 PC6 TIM8_CH1 OUPUT2
91 38 PC7 TIM3_CH2 OUPUT7
92 39 PC8 TIM8_CH3 OUPUT5
93 40 PC9 TIM8_CH4 OUPUT8
94 41 PA8 TIM1_CH1 OUPUT4
96 43 PA10 TIM1_CH3 OUPUT3
97 46 PA13* SYS_JTMS-SWDIO
98 49 PA14* SYS_JTCK-SWCLK
105 56 PB4 GPIO_Output Inverter
108 59 PB7 USART1_RX USART1_RX
113 ## Manufacturers and Distributors