Usb_Boot Interface; Adc Interfaces - Quectel BG96 Series Hardware Design

3.15. USB_BOOT Interface

BG96 provides a USB_BOOT pin. During development or factory production, USB_BOOT can force the
module to boot from USB port for firmware upgrade.
Table 20: Pin Definition of USB_BOOT Interface
Pin Name Pin No.
USB_BOOT 75
The following figure shows a reference circuit of USB_BOOT interface.
NOTE
It is recommended to reserve the above circuit design during application design.

3.16. ADC Interfaces*

The module provides two analog-to-digital converter (ADC) interfaces. AT+QADC=0 command can be
used to read the voltage value on ADC0 pin. AT+QADC=1 command can be used to read the voltage
value on ADC1 pin. For more details about these AT commands, please refer to document [2].
BG96_Hardware_Design
I/O Description
Force the module to enter into
DI
emergency download mode
Module
USB_BOOT
TVS
Figure 20: Reference Circuit of USB_BOOT Interface
VDD_EXT
Test point
10K
Close to test point
LTE Module Series
BG96 Hardware Design
Comment
1.8V power domain.
Active high.
If unused, keep it open.
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