UMTS/HSPA Module Series
WCDMA UGxx AT Commands Manual
WCDMA_UGxx_AT_Commands_Manual Confidential / Released 217 / 247
13 Hardware Related Commands
13.1. AT+QPOWD Power Off
The command AT+QPOWD is used to shut down the module. The UE will return OK immediately when
the command is executed. Then the UE deactivates the network. After it is completed, the UE outputs the
message “POWERED DOWN” and sets the STATE pin as low to enter into the shutdown state. The
maximum time for network log-off is 60 seconds. In order to avoid data loss, it is only allowed to turn off
the UE power after the module‟s STATE pin is set as low and the URC “POWERED DOWN” is outputted.
If “POWERED DOWN” has not been received after 65s, you should force to switch off the VBAT.
Parameter
13.2. AT+CCLK Clock
AT+CCLK sets and queries the real time clock (RTC) of the module. The current setting is retained until
the module is totally disconnected from power.
Response
+QPOWD: (0,1)
OK
Execute Command
AT+QPOWD[=<n>]
<n> 0 Immediately power down
1 Normal power down
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