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LTE Module Series
EM05 Hardware Design
EM05_Hardware_Design Confidential / Released 19 / 59
1. The typical supply voltage of VCC is 3.3V.
2. Keep all NC, reserved and unused pins unconnected.
3.
“*” means under development.
4. EM05-CML does not support I2C interface.
3.3. Operating Modes
The table below briefly summarizes the various operating modes referred in the following chapters.
Table 5: Overview of Operating Modes
3.4. Power Saving
3.4.1. Sleep Mode
EM05 is able to reduce its current consumption to a minimum value during the sleep mode. The following
section describes power saving procedure of EM05 module.
Mode
Details
Normal
Operation
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
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
command or W_DISABLE1# pin can set the module into 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. Operating voltage (connected to VCC) remains applied.
NOTES
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