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3.21. Emergency Download Interface
USB_BOOT is an emergency download interface. You can force the module to enter emergency
download mode by pulling it down to ground during power-up. This is an emergency option when
start-up failures or operational abnormalities occur. For firmware upgrade and debugging in the future,
please reserve the following reference design.
Figure 29: Reference Circuit Design for Emergency Download Interface
NOTE
The reference design above must be applied for firmware upgrade via USB interface.
SC200L_Series(Dual-band Wi-Fi)_Hardware_Design
R1
USB_BOOT
1K
GND
Module
Smart Module Series
S1
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