Turn-On And Turn-Off Scenarios; Turn On The Module; Turn On The Module With A Host Gpio - Quectel LTE-A Module Series Hardware Design

NOTE
In order to avoid damages to the internal flash, do not cut off the power supply directly when the module is
working. It is suggested that the power supply should be cut off after the module is shut down.

3.4. Turn-on and Turn-off Scenarios

3.4.1. Turn on the Module

Pulling up the FULL_CARD_POWER_OFF# pin will power on the module. The following table shows the
pin definition of FULL_CARD_POWER_OFF#.
Table 5: Pin Definition of FULL_CARD_POWER_OFF#
Pin Name Pin No. Description
Turn on/off the module.
FULL_CARD When it is at low level, the
_POWER_ 6 module is powered off.
OFF# When it is at high level, the
module is powered on.

3.4.1.1. Turn on the Module with a Host GPIO

It is recommended to use a host GPIO to control FULL_CARD_POWER_OFF#. A simple reference circuit
is illustrated in the following figure.
Host
GPIO
GND
Figure 6: Turn on the Module with a Host GPIO
EM120R-GL&EM160R-GL_Hardware_Design
EM120R-GL&EM160R-GL Hardware Design
DC Characteristics
V max = 4.4 V
IH
V min = 1.19 V
IH
V max = 0.2 V
IL
Module
1.8 V or 3.3 V
FULL_CARD_POWER_OFF#
GND
LTE-A Module Series
Comment
Pulled down
internally.
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