Shenzhen ADA Electronics Co. Ltd. ADA789 User Manual
第
5 页共 11 页
Table 2-2. ADA789 Pin Definition
NO.
Name
Funtion
1
NC
Not connected
2
ADC
GPIO4/ADC1
3
CHIP_EN
Chip Enable. Internal Pull High in module
4
AOS_GPIO_14
GPIO14/SD_CLK/SPI_CLK
5
AOS_GPIO_15
GPIO15/SD_CMD/SPI_CSN
6
AOS_GPIO_16
GPIO16/SD_DATA0/SPI_MOSI
7
AOS_GPIO_17
GPIO17/SD_DATA1/SPI_MISO
8
VCC_3V3
3.3V power supply (VDD)
Note: The max current of power supply should be above
Note: The max current of power supply should be above
500 mA
9
VDD_FLASH
Power supply for internal flash(for firmware programming)
10
DIG_TEST
Digital test enable,active high(for firmware programming)
11
AOS _FLASH_CSN GPIO21/I2C1_SDA/JTAG_TMS/FLASH_CSN(for firmware
Programming)
12
AOS_FLASH_SCK GPIO20/I2C1_SCL/JTAG_TCK/FLASH_SCK(for firmware programming)
13
AOS _FLASH_SO
GPIO23/JTAG_TDO/FLASH_SO(for firmware programming)
14
AOS _FLASH_SI
GPIO22/XHO/JTAG_TDI/FASH_SI(for firmware programming)
15
GND
Ground
16
NC
Not connected
17
AOS_GPIO_30
GPIO30/USB_DN
18
AOS_GPIO_29
GPIO29/USB_DP
19
AOS_GPIO_11
GPIO11/UART1_TX(debug UART-TX)
20
AOS_GPIO_
10
GPIO10/UART1_RX(debug UART-RX)
21
AOS_GPIO_01
GPIO1/ I2C2_SDA/UART2_RX(user UART-RX)
22
AOS_GPIO_31
GPIO31/ I2C2_SCL/UART2_TX(user UART-TX)