Turn Off The Module; Turn Off The Module Through Full_Card_Power_Off; Turn Off The Module Through At Command - Quectel LTE-A Module Series Hardware Design

3.4.2. Turn off the Module

3.4.2.1. Turn off the Module through FULL_CARD_POWER_OFF#

Pulling down the FULL_CARD_POWER_OFF# pin will turn off the module. The turn-off scenario is
illustrated in the following figure.
VCC
FULL_CARD_POWER_OFF#
RESET#
PCIE_RST_N
Figure 10: Timing of Turning off the Module through FULL_CARD_POWER_OFF#
Table 7: Description of the Timing of Resetting the Module througn FULL_CARD_POWER_OFF#
Index Min. Typical
T1 0 ms 20 ms
T2 0 ms 10 ms
T3 10 ms -

3.4.2.2. Turn off the Module through AT Command

It is a safe way to use AT+QPOWD command to turn off the module. For more details about the
command, refer to document [3].
For the circuit design of Figure 6, pull down FULL_CARD_POWER_OFF# pin, or cut off power supply of
VCC after the module's USB/PCIe is removed. Otherwise, the module will be powered on again.
EM120R-GL&EM160R-GL_Hardware_Design
EM120R-GL&EM160R-GL Hardware Design
T3
T2
T1
Max. Comments
- PCIE_RST_N should be asserted before RESET#.
RESET# is recommended to be asserted before
200 ms
FULL_CARD_POWER_OFF#
- If power is always on, it could be ignored.
LTE-A Module Series
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