Quectel EM05 User Manual

LTE Module Series
EM05 Hardware Design
EM05_Hardware_Design Confidential / Released 26 / 59
3.6.2. Turn off the Module
The following procedures can be used to turn off the module:
 Hardware shutdown: Turn off the module using the FUL_CARD_POWER_OFF# pin.
 Software shutdown: Turn off the module using AT+QPOWD command.
3.6.2.1. Turn off the Module Using the FUL_CARD_POWER_OFF# Pin
Driving the FUL_CARD_POWER_OFF# pin to low, the supply of PMIC will be powered off, then the
module will be forced to shut down. But this may damage the internal flash, it is recommended to drive the
FUL_CARD_POWER_OFF# pin to low after pulling down RESET# for about 100ms.
The power-down scenario is illustrated in the following figure.
VCC
FUL_CARD_POWER_OFF#
≥100ms
RUNNING PMIC RESET OFF
Module
Status
RESET#
Figure 11: Timing of Turning off the Module Through FUL_CARD_POWER_OFF#
3.6.2.2. Turn off the Module Using AT Command
It is a safe way to use AT+QPOWD command to turn off the module. Please pull down
FUL_CARD_POWER_OFF# pin, or cut off power supply of VCC after the module is shut down, otherwise,
the module will be powered on again.
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Quectel EM05 Specifications

General

Brand	Quectel
Model	EM05
Category	Control Unit
Language	English