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FIBOCOM NL668-LA Series Hardware Guide
Page 40 of 61
6 Low Power Consumption
6.1 Airplane Mode
W_DISABLE# Pin Description:
Table 6-1 W_DISABLE# pin description
Pin name
I/O
Pin No.
Description
W_DISABLE#
I
4
Module airplane mode control
NL668-LA series module supports two ways to enter airplane mode:
Table 6-2 Module enter airplane mode ways
1
Hardware I/O interface button
control
First send “AT+WDISABLEEN=1” to enable W_DISABLE#
pin function. Pull high or float W_DISABLE# pin (pull high by
default), module enter normal mode, pull it down, module
enter airplane mode.
2
AT command control
AT+CFUN=4--module enter airplane mode
AT+CFUN=1--module enter normal mode
6.2 Sleep Mode
6.2.1 USB Application (Nonsupport USB Suspend, Support VBUS)
If the host nonsupport USB suspend function, the module can enter sleep mode by disconnect
USB_VBUS from the external control circuit:
Sleep:
Send AT+GTUSBDETECTEN=1 to enable USB plug detect function.
AT+GTLPMMODE=1,X command to set the WAKEUP_IN pin’s level of control module enter sleep mode.
Reset module, command effective.
(X=0, WAKEUP_IN pin is high level, module enter sleep mode;
X=1, WAKEUP_IN pin is low level, module enter sleep mode)
AT+CSCLK=1 command to enable sleep function.
AT+GTUSBSLEEPEN=1,0 command to set USB sleep mode.
Draw out the USB cable or disable the USB HUB controller, module enter sleep mode.
Wake up:
