GSM/GPRS/GNSS Module Series
MC60 Series Hardware Design
MC60_Series_Hardware_Design Confidential / Released 52 / 114
VBAT
PWRKEY
(INPUT)
VDD_EXT
(OUTPUT)
Logout from network in 2-12s
0.7s<Pulldown<1s
RUNNING
OFF
GSM PART STATUS
Figure 22: Turn-off Timing of GSM Part by Using the PWRKEY Pin
3.8.2.2. Power down GSM Part using Command
It is also a safe way to turn off the GSM module via AT command
AT+QPOWD=1
. This command will let
the GSM module log off from the network and allow the firmware to save important data before completely
disconnecting the power supply.
Before the completion of the power down procedure, the GSM module sends out the result code shown
below:
NORMAL POWER DOWN
After that moment, no further AT commands can be executed. And then the GSM module enters into the
power down mode.
Please refer to
document [1]
for details about the AT command
AT+QPOWD
.
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