Neo_M680 GPRS Module Hardware User Guide
Copyright © Neoway Technology Co., Ltd
14
Power-Off Procedure
While the module is on, drive the ON/OFF pin to ground for at least 5
00 ms
and then release, the module
will try to detach to network and normally 2 seconds later it will shut down. Another approach to turn off the
module is using AT commands. For details, see
Neo_M680 GPRS Module AT Commands
. Figure 3-8 shows
the power-off procedure of the module.
Figure 3-8
Power-off procedure
Power-On/Off Control
Figure 3-9 shows a reference circuit for ON/OFF control with inverted control logic.
Figure 3-9
Reference circuit for power-on/off control
VBAT
ON/OFF
VDD_EXT
UART
2 s
500 ms
GPRS Module
ON/OFF
TVS
S 1
