Shenzhen Neoway Technology Co., Ltd. Page 16 of 32
Figure 9 Turning on /off the module using ON/OFF
6.2.1 Turning on the module
While the module is off, drive the ON/OFF pin to ground for at least 600mS (800mS is
recommended) and then release, the module will start. An unsolicited message will be sent to host
through AT port (“+EIND: 1”), indicating the powering up of the module and the AT commands can
respond.
It’s recommended to drive the ON/OFF to low before applying the VBAT to module. 300mS
(400mS is recommended) later from the VBAT applied, release the ON/OFF. Therefore the module
starts up. The simplest way to power on the module, is to directly tie the ON/OFF to ground, issuing
to an auto-power-on feature.
After the module is operating, keep ON/OFF being high level.
6.2.2 Turning off the module
While the module is on, drive the ON/OFF pin to ground for at least 500mS and then release, the
module will try to detach to network and normally 1 second later it will shut down. Another
approach to turn off the module is with AT command.
Figure 10 shows a reference circuits for ON/OFF control with inverted control logic.
To Next Page
Loading...
