Description:
The Widora_Bit is a well design core board that based on MT7688AN module, it provide various configuration and breakout all the MT7688AN pins by castle hole(half hole), it is very continent embed this board to your project. It can be used in WiFi router, 3G convert to WiFi, Wireless camera, wireless audio amplifier, Ethernet adapter, wireless data storage, drone and remote control monitoring.
Specification:
Protocol and interface standard:
WiFi Standard | IEEE 802.11b/g/n |
Ethernet interface | 1 channel |
USB2.0 | 1 channel |
SD-XC | 1 |
SPI | 1 |
I2C | 1 |
I2S | 1 |
UART | 3 |
PWM | 4 |
GPIO | 13 |
Memory:
Flash memory (7688): 32M
RAM (7688): DDR2: 64MB
WiFi RF specification:
Operating Frequency: ISM Band
Transmit Power: 18±1dbm
Communication Channel: 1- 14
Ethernet Speed: 1T1R/150Mbps
Operating Power:
Input: DC 3.3V ±0.2V
No-load Current: 130±10mA
Load Current: over 1000mA
Dimension: 33.02 x 17.78mm
Pins explanation:
Pin Name | Mark | Property | Description |
A1 | I2S_SDI | I | I2S data input |
A2 | I2S_SDO | O | I2S data output |
A3 | I2S_WS | O | I2S audio channel select, 0: left, 1: right |
A4 | I2S_CLK | O | I2S DBCLK |
A5 | I2C_SCLK | O | I2S BUSCLK |
A6 | I2C_SD | I/O | I2S BUS data |
A7 | VDD_FLASH | I | Flash Power, 3.3V |
A8 | SPI_CS1 | O | SPI BUS SIGNAL |
A9 | SPI_CLK | O | SPI BUS CLK |
A10 | SPI_MISO | I | SPI MISO |
A11 | SPI_MOSI | O | SPI MOSI |
A12 | SPI_CS0 | O | SPI CS0 |
A13 | GPIO_O | I/O | GPIO11 |
B1 | UART_TXD0 | O | UART TXD0 |
B2 | UART_RXD0 | I | UART RXD0 |
B3 | RXI_P | A | PORT0 Network Signal Receive Positive |
B4 | RXI_N | A | PORT0 Network Signal Receive Negative |
B5 | TXO_P | A | PORT0 Network Signal Transmit Positive |
B6 | TXO_N | A | PORT0 Network Signal Transmit Negative |
B7 | GPIO14/ TXO_P | I/O | GPIO/PORT1 Network Signal Transmit Positive |
B8 | GPIO15/ TXO_N | I/O | GPIO/PORT1 Network Signal Transmit Negative |
B9 | GPIO16/ RXI_P | I/O | GPIO/PORT1 Network Signal Receive Positive |
B10 | GPIO17/ RXI_N | I/O | GPIO/PORT1 Network Signal Receive Negative |
B11 | PWM_CH0 | O | PWM Channel 0 |
B12 | PWM_CH1 | O | PWM Channel 1 |
B13 | TXD2/PWM2 | O | Serial Port 2 Transmit/ PWM Channel 2 |
B14 | RXD2/PWM3 | I/O | Serial Port 2 Receive/ PWM Channel 3 |
B15 | SD_WP | I | SD Write-Protect, 1: yes, 2: no. |
B16 | SD_CD | I | SD Card detection, 1: No TF card, 0: yes |
B17 | SD_D1 | I/O | SDIO data 1 |
B18 | SD_D0 | I/O | SDIO data 0 |
B19 | SD_CLK | O | SDIO Clock |
B20 | SD_CMD | O | SDIO Commend |
B21 | SD_D3 | I/O | SDIO Data 3 |
B22 | SD_D2 | I/O | SDIO Data 2 |
B23 | GND | P | Ground |
B24 | UD_P | I/O | USB DATA Positive |
B25 | UD_N | I/O | USB DATA Negative |
C1 | GND | P | Ground |
C2 | RF | A | RF Output Signal |
C3 | GND | P | Ground |
C4 | GND | P | Ground |
C5 | UART_RXD1 | I | UART Data Receive |
C6 | UART_TXD1 | O | UART Data Transmit |
C7 | WLED_N | O | WIFI LED, Low voltage On |
C8 | LINK0 | O | PORT0 LED, Low voltage On |
C9 | GPIO42/LINK1 | I/O | GPIO42/PORT1 LED, Low Voltage On |
C10 | GPIO41/LINK2 | I/O | GPIO41/PORT2 LED, Low Voltage On |
C11 | PCIE_CKP0 | O | PCIE BUS Clock output Positive |
C12 | PCIE_CKN0 | O | PCIE BUS Clock output Negative |
C13 | PCIE_RXN0 | I | PCIE BUS Data Receive Negative |
C14 | PCIE_RXP0 | I | PCIE BUS Data Receive Positive |
C15 | PCIE_TXP0 | O | PCIE BUS Data Transmit Positive |
C16 | PCIE_TXN0 | O | PCIE BUS Data Transmit Negative |
C17 | 3.3VD | P | 3.3V Power |
C18 | GND | P | Ground |
C19 | GPIO40/LINK3 | I/O | GPIO40/PORT3 LED, Low Voltage On |
C20 | GPIO39/LINK4 | I/O | GPIO39/PORT4 LED, Low Voltage On |
C21 | CPURST_N | I | CPU Reset Input, low voltage On |
C22 | WPS_RST_PBC | I | User Button, WPS Input |
C23 | REF_CLK | O | Reference clock output, Default 12MHz |
C24 | PERST_N | O | PCIE Reset Output (related to Boot, be careful!) |
C25 | GND | P | Ground |
Links:
https://github.com/widora
Datasheet: