Quectel SC200E Series User Manual

Smart Module Series
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3.23. USB_BOOT
USB_BOOT is an emergency download interface. You can force the module to enter emergency
download mode by pulling it up to LDO15A_1V8 when the module is turning on. This is an emergency
option when failures such as abnormal start-up or running occur. For firmware upgrade and debugging in
the future, reserve the following reference design.
Table 27: Pin Definition of USB_BOOT Interface
LDO15A_1V8
S1
Module
USB_BOOT
R1
10K
Figure 28: Reference Circuit Design for Emergency Download Interface
Pin Name
Pin No.
I/O
Description
Comment
USB_BOOT
46
DI
Force the module into emergency
download mode
Force the module to enter
emergency download mode by
pulling this pin up to LDO15A_1V8
when the module is turning on.

Quectel SC200E Series Specifications

General

Brand	Quectel
Model	SC200E Series
Category	GSM/GPRS Modules
Language	English