Reset - Fibocom NL668-LA Series Hardware Manual

Table 5-2 Power Off
Power Off Mode
Low-voltage power
off
Hardware power off Pull down PWRKEY 3s to 8s
AT 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:

5.1.2 RESET

The module supports two modes to reset: hardware reset and software reset.
Table 5-3 Reset modes
Reset Mode
Hardware reset
Software reset
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FIBOCOM NL668-LA Series Hardware Guide
Power Off Method
When VBAT voltage is low or power
down, the module will power off
AT+ CPWROFF
Figure 5-4 Power off timing
Reset Method
Pull down RESET_N pin 700s to 1s, then release it
Sent AT commands AT+RESET
Applicable Scenario
The module does not power off through
normal process, i.e. does not logout from
the base station
Hardware normal power off
Software normal power off
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