LTE-A Module Series
EG060V-EA Hardware Design
EG060V-EA_Hardware_Design 27 / 82
3.5. Power Saving
3.5.1. Sleep Mode
In the sleep mode, DRX, whose cycle index value is broadcasted via the wireless network, reduces the
module’s current consumption to a minimum level. The figure below shows the relationship between DRX
run time and current consumption in this mode: the longer the DRX runs, the lower the current
consumption.
Current Consumption
Run Time
DRX OFF ON OFF ON OFF ON OFF ON OFF
Figure 3: DRX Run Time and Current Consumption in Sleep Mode
The following sections describe the different approaches to setting the module into sleep mode.
Minimum
Functionality
Mode
Executing AT+CFUN=0 command can set the module into minimum functionality
mode without removing the power supply. In this mode, both RF function and (U)SIM
card are invalid.
Executing AT+CFUN=4 command or driving W_DISABLE# pin to low logic level can
set the module into airplane mode where the RF function is invalid.
The module keeps receiving paging messages, SMS, voice calls and TCP/UDP data
from the network, its current consumption reduced to the minimal level.
The module’s power supply is cut off by its power management unit, its software being
inactive and interfaces inaccessible while the operating voltage (connected to
VBAT_RF and VBAT_BB) remains applied.
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