HSPA/UMTS/GSM/GPRS Module Series
UG96&UG95&M95 R2.0 Compatible Design
UG96&UG95&M95 R2.0_Compatible_Design 22 / 42
2. The time of pulling down PWRKEY of UG96/UG95 and M95 R2.0 is different.
3. The parts marked in black in the above figure are for UG96/UG95.
4. The parts marked in red in the above figure are for M95 R2.0.
4.3. Power-off Circuit
4.3.1. Turn off Module Using AT Command
There are several different ways to turn off UG96/UG95 and M95 R2.0. It is recommended to use a safe
way to turn off the module by AT+QPOWD, which will let the module log off from the network and allow
the firmware to save important data before completely disconnecting the power supply.
The power-off scenario is illustrated as the following figure.
VBAT
AT+QPOWD
Log out from network in 2s~40s
RUNNING
Turn-off procedure
OFF
Module
Status
STATUS
RXD
M95 R2.0
UG96/UG95
Figure 7: Power-off Scenario
1. The parts marked in black in the above figure are for UG96/UG95.
2. The parts marked in red in the above figure are for M95 R2.0.
3. Network logout time is related to local network signal strength.
4.3.2. Turn off M95 R2.0 Using PWRKEY Pin
It is also a safe way to turn off M95 R2.0 by pulling down the PWRKEY pin for a period of time (0.7s~1s),
while UG96/UG95 cannot be turned off by the PWRKEY pin.
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