Emergency Download Interface - Quectel SC600Y-EM Series Hardware Design

Smart LTE Module Series
SC600Y&SC600T Hardware Design

3.24. Emergency Download Interface

USB_BOOT is an emergency download interface. Pull up to LDO5_1P8 during power-up will force the
module enter into emergency download mode. This is an emergency option when there are failures such
as abnormal startup or operation. For convenient firmware upgrade and debugging in the future, please
reverse the reference circuit design shown as below.
LDO5_1P8
S1
R1
USB_BOOT
10K
Module
Figure 32: Reference Circuit Design for Emergency Download Interface
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