User's Manual

BL-62B WIFI+BLE module

Page 9 of 13

IO8 should be pulled high when downloading, and low

when running (IO8 inside the module has been pulled

low)

IO1

GPIO1;SDIO_CMD;FLASH_D2;SPI_MOSI;I2C_SDA; UART;

PWM_CH1; JTAG_TDI

IO3

GPIO3;SDIO_DAT1;FLASH_D3;SPI_SCLK;I2C_SDA;UART;

PWM_CH3; JTAG_TDO

IO4

GPIO4;SDIO_DAT2;SPI_MISO;I2C_SCL;UART;PWM_CH4;

ADC_CH1;JTAG_TMS

RXD0

GPIO7;SPI_SCLK; I2C_SDA; UART0_RX/ UART; PWM_CH2;

JTAG_TDO (Only this UART0 can be used to burn

firmware)

TXD0

GPIO16;SPI_MISO;I2C_SCL;UART0_TX/ UART; PWM_CH1;

JTAG_TMS (Only this UART0 can be used to burn

firmware)

In the table above, when selecting the UART function, only one signal of the UART is

selected, the specific function of the pin (e.g. UART TX or UART RX) is not specified, and the

specific UART signal and corresponding function are further selected by UART_SIGX_SEL (X-0-

7). The signals that UART_SIGX_SEL each option include:

SIG0 : UART0_RTS; SIG1 : UART0_CTS; SIG2 : UART0_TXD; SIG3 : UART0_RXD;

SIG4 : UART1_RTS; SIG5 : UART1_CTS; SIG6 : UART1_TXD; SIG7 : UART1_RXD.