Product Info

LTE-A Module Series
EG12 Hardware Design
EG12_Hardware_Design 32 / 100
Table 5: Overview of Operating Modes
3.5. Power Saving
3.5.1. Sleep Mode
DRX of EG12 is able to reduce the current consumption to a minimum value during the sleep mode, and
DRX cycle index values are broadcasted by the wireless network. The figure below shows the relationship
between the DRX run time and the current consumption in sleep mode. The longer the DRX cycle is, the
lower the current consumption will be.
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
Mode
Details
Normal
Operation mode
Idle
Software is active. The module has registered on the network, and it is
ready to send and receive data.
Talk/Data
Network connection is ongoing. In this mode, the power consumption is
decided by network setting and data transfer rate.
Minimum
Functionality
Mode
AT+CFUN=0 command can set the module to a minimum functionality mode without
removing the power supply. In this case, both RF function and (U)SIM card will be
invalid.
Airplane Mode
AT+CFUN=4 command or driving W_DISABLE# pin to low level can set the module
to airplane mode. In this case, RF function will be invalid.
Sleep Mode
In this mode, the current consumption of the module will be reduced to the minimal
level. During this mode, the module can still receive paging message, SMS, voice
call and TCP/UDP data from the network normally.
Power Down
Mode
In this mode, the power management unit shuts down the power supply. Software is
not active. The serial interfaces are not accessible. Operating voltage (connected to
VBAT_RF and VBAT_BB) remains applied.