Product Info

LPWA Module Series
BG95 Series Hardware Design
BG95_Series_Hardware_Design 56 / 106
2. “*” means under development.
3.16. USB_BOOT Interface
BG95 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 22: Pin Definition of USB_BOOT Interface
The following figure shows a reference circuit of USB_BOOT interface.
Module
USB_BOOT
VDD_EXT
10K
Test point
TVS
Close to test point
Figure 23: Reference Design of USB_BOOT Interface
The following figure shows the timing of USB_BOOT.
Pin Name
Pin No.
I/O
Description
Comment
USB_BOOT
75
DI
Force the module into emergency
download mode
1.8 V power domain.
Active high.
If unused, keep it open.