5 * Processors and Sensors
7 * *IMU:* ICM20689(Gyro1) & MPU6000(Gyro2) connected via SPI1
8 * *Baro:* BMP280 (connected via I2C1)
9 * *OSD:* BetaFlight OSD (AT7456E connected via SPI2)
10 * *Blackbox:* FLASH M25P16 (connected via SPI3)
11 * 6 UARTs (1,2,3,4,5,6)
13 * 2 PINIO (VTX power switcher/user1 and 2 camera switcher/user2)
14 * USB VCP and boot select button on board (for DFU)
15 * Serial LED interface(LED_STRIP)
16 * VBAT / CURR / RSSI sensors input
17 * Suppose IRC Tramp / Smart audio / FPV Camera Control / FPORT/telemetry
18 * Supports SBus, Spektrum1024/2048, PPM. No external inverters required (built-in).
19 * Supports I2C device extend(Compass / OLED etc)
24 ### All uarts have pad on board
26 | Value | Identifier | RX | TX | Notes |
27 | :---: | :--------: | :--: | :--: | :----------------------------: |
28 | 1 | USART1 | PA10 | PA9 | FOR SBUS IN(inverter build in) |
29 | 2 | USART2 | PA3 | PA2 | USE FOR TRAMP/smart audio |
30 | 3 | USART3 | PB11 | PB10 | USE FOR GPS |
31 | 4 | USART4 | PA1 | PA0 | PAD USE FOR TRAMP/smart audio |
32 | 5 | USART5 | PD2 | PC12 | PAD ESC sensor |
33 | 6 | USART6 | PC7 | PC6 | PAD |
35 ### I2C with GPS port together.Use for BARO or compass etc
37 | Value | Identifier | function | pin | Notes |
38 | :---: | :--------: | :------: | :--: | :---: |
39 | 1 | I2C1 | SDA | PB7 | |
40 | 2 | I2C1 | SCL | PB6 | |
44 | Value | Identifier | function | pin | Notes |
45 | :---: | :--------: | :------: | :--: | :---: |
46 | 1 | LED0 | LED | PA15 | |
47 | 2 | BEEPER | BEE | PC15 | |
49 ### VBAT input, Current input, Analog RSSI input
51 | Value | Identifier | function | pin | Notes |
52 | :---: | :--------: | :------: | :--: | :----------: |
53 | 1 | ADC1 | VBAT | PC2 | DMA2_Stream0 |
54 | 2 | ADC1 | CURR | PC1 | DMA2_Stream0 |
55 | 3 | ADC1 | RSSI | PC0 | DMA2_Stream0 |
57 ### PWM Input & PWM Output
59 | Value | Identifier | function | pin | Notes |
60 | :---: | :--------: | :------: | :--: | :----------: |
61 | 1 | TIM9_CH2 | PPM | PA3 | PPM |
62 | 2 | TIM3_CH3 | Motor1 | PB0 | DMA1_Stream2 |
63 | 3 | TIM3_CH4 | Motor2 | PB1 | DMA1_Stream2 |
64 | 4 | TIM3_CH1 | Motor3 | PB4 | DMA1_Stream4 |
65 | 5 | TIM2_CH2 | Motor4 | PB3 | DMA1_Stream6 |
66 | 7 | TIM8_CH4 | Motor5 | PC9 | DMA2_Stream1 |
67 | 8 | TIM8_CH3 | Motor6 | PC8 | DMA2_Stream4 |
68 | 9 | TIM1_CH1 | LED | PA8 | LED STRIP |
69 | 10 | TIM4_CH3 | ANY | PB8 | FC CAM |
71 ### Gyro & ACC ICM20689
73 | Value | Identifier | function | pin | Notes |
74 | :---: | :--------: | :------: | :--: | :----------------: |
75 | 1 | SPI1 | SCK | PA5 | MPU6000 & ICM20689 |
76 | 2 | SPI1 | MISO | PA6 | MPU6000 & ICM20689 |
77 | 3 | SPI1 | MOSI | PA7 | MPU6000 & ICM20689 |
78 | 4 | SPI1 | CS2 | PA4 | MPU6000 |
79 | 5 | SPI1 | CS1 | PB2 | ICM20689 |
80 | 6 | SPI1 | INT2 | PC3 | MPU6000 |
81 | 7 | SPI1 | INT1 | PC4 | ICM20689 |
85 | Value | Identifier | function | pin | Notes |
86 | :---: | :--------: | :------: | :--: | :---: |
87 | 1 | SPI2 | SCK | PB13 | |
88 | 2 | SPI2 | MISO | PB14 | |
89 | 3 | SPI2 | MOSI | PB15 | |
90 | 4 | SPI2 | CS | PB12 | |
94 | Value | Identifier | function | pin | Notes |
95 | :---: | :--------: | :------: | :--: | :---: |
96 | 1 | SPI3 | SCK | PC10 | |
97 | 2 | SPI3 | MISO | PC11 | |
98 | 3 | SPI3 | MOSI | PB5 | |
99 | 4 | SPI3 | CS | PC13 | |
103 | Pin | Function | Notes |
104 | :--: | :------: | :---: |