User's Manual

GSM/GPRS/GNSS Module Series
MC20 Hardware Design
MC20_Hardware_Design Confidential / Released 42 / 95
3.5.2.3. Power down GNSS Part Alone Using AT Command
It is a safe way to turn off the GNSS part alone via AT command AT+QGNSSC=0. The power down
scenario for GNSS part is illustrated in the following figure.
Figure 15: Turn-off Timing of GNSS Part by Using AT Command
3.5.2.4. Under-voltage Automatic Shutdown
The module will constantly monitor the voltage applied on the VBAT. If the voltage is ≤3.5V, the following
URC will be presented:
UNDER_VOLTAGE WARNING
The normal input voltage range is from 3.3V to 4.6V. If the voltage is <3.3V, the module will automatically
shut down.
If the voltage is <3.3V, the following URC will be presented: