Smart LTE Module Series
SC600Y&SC600T Hardware Design
SC600Y&SC600T_Hardware_Design 85 / 128
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
Module
USB_BOOT
R1
10K
Figure 32: Reference Circuit Design for Emergency Download Interface