LTE Standard Module Series
EC200T Series Hardware Design
EC200T_Series_Hardware_Design 33 / 90
Software:
AT+CFUN=<fun>
command provides the choice of the functionality level through setting
<fun>
into 0, 1
or 4.
AT+CFUN=0:
Minimum functionality mode; both (U)SIM and RF functions are disabled.
AT+CFUN=1:
Full functionality mode (by default).
AT+CFUN=4:
Airplane mode. RF function is disabled.
3.6. Power Supply
3.6.1. Power Supply Pins
EC200T series provides four VBAT pins dedicated to connecting with the external power supply. There
are two separate voltage domains for VBAT.
Two VBAT_RF pins for module’s RF part
Two VBAT_BB pins for module’s baseband part
The following table shows the details of power supply and GND pins.
Table 8: Power Supply and GND Pins
Pin Name
Pin No.
Description
Min.
Typ.
Max.
Unit
VBAT_RF 57,
58
Power supply for module’s
RF part
3.4 3.8 4.5
V
VBAT_BB 59,
60
Power supply for module’s
baseband part
3.4 3.8 4.5
V
GND
8, 9, 19, 22, 36,
46, 48, 50–54,
56, 72, 85–112
Ground -
0
-
V
3.6.2. Decrease Voltage Drop
The power supply range of the module is from 3.4 V to 4.5 V. Please make sure that the input voltage will
never drop below 3.4 V. The following figure shows the voltage drop during burst transmission in 2G
network. The voltage drop will be less in 3G and 4G networks.
