Reproduction forbidden without Fibocom Wireless Inc. written authorization - All Rights Reserved.
FIBOCOM NL668-LA Series Hardware Guide
Page 27 of 61
Table 5-2 Power Off
Power Off Mode
Power Off Method
Applicable Scenario
Low-voltage power
off
When VBAT voltage is low or power
down, the module will power off
The module does not power off through
normal process, i.e. does not logout from
the base station
Hardware power off Pull down PWRKEY 3s to 8s
Hardware normal power off
AT power off
AT+ CPWROFF
Software normal power off
Note:
1.When module at
operating mode, please do not cut off module power supply to avoid
damage internal flash. Recommended by PWRKEY pin or AT commands power off module,
then cut off power supply.
2.When power off by AT commands, please don’t pull down PWRKEY pin, otherwise module
will power on again automatically.
The power off timing is shown as follows:
Figure 5-4 Power off timing
5.1.2 RESET
The module supports two modes to reset: hardware reset and software reset.
Table 5-3 Reset modes
Reset Mode
Reset Method
Hardware reset
Pull down RESET_N pin 700s to 1s, then release it
Software reset
Sent AT commands AT+RESET
