Product Specs

6.3. Module Pin Function Description
Pin
Symb
I/O
Description
P1
USB_DN
Digital I/O
GPIO7,PWM1/USBN
P2
USB_DP
Digital I/O
GPIO6,PWM0/USBP
P3
GPIO14
Digital I/O
GPI O14,JTAG_TDO/PWM5/ADC7/PCM_DOU T
P4
GPIO2
Digital I/O
GPIO2,SPI_CSN/ADC1/IrDA/Capture Time
P5
GPIO10
Digital I/O
GPIO10,SD_DATA0/RX_EN/SPI2_MISO
P6
GPIO9
Digital I/O
GPIO9,SD_CMD/TX_EN/SPI2_MOSI
P7
TXD
Digital I/O
GPIO0,UART_TXD/I2C_SCL,Download port
P8
RXD
Digital I/O
GPIO1,UART_RXD/I2C_SDA,Download port
P9
GPIO4
Digital I/O
GPIO4,SPI_MOSI//I2C_SCL
P10
GPIO5
Digital I/O
GPIO5,SPI_MISO//I2C_SDA
P11
GPIO8
Digital I/O
GPIO8,SD_CLK//SPI2_SCK
P12
GPIO3
Digital I/O
GPIO3,SPI_SCK/ADC2/CLKOUT
P13
VBAT
Power supply
Power supply (3.3V-4.2V)
P14
GND
GND
GND
P15
NC
NC
NC
P16
VCC3YS
Power
SYS 3V OUTPUT
P17
VUSB
Power
VUSB (4.7-5.2V)