GNSS Module Series
LC79D Hardware Design
LC79D_Hardware_Design 24 / 42
3.8. Boot Interface
When the module is powered on, the voltage level of the BOOT pin will be checked to identify its working
mode.
Table 8: Working Modes
Figure 8: BOOT Pin State (Normal Working Mode)
VCC
BOOT
≥100ms
≥0ms
Keep Floating
Figure 9: BOOT Pin Control Sequence (Host Mode)
While keeping the pin floating during startup, LC79D module will
enter normal working mode.
While keeping the pin at high level for about 100ms during startup,
LC79D module will enter host mode.
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