User's Manual

LTE Module Series
EC25Hardware Design
EC25_Hardware_DesignConfidential / Released 32 / 90
Hardware:
The W_DISABLE# pin is pulled up by default; driving it to low level will let the module enter into airplane
mode.
Software:
AT+CFUNcommand provides the choice of the functionality level.
 AT+CFUN=0: Minimum functionality mode; both USIM and RF functions are disabled.
 AT+CFUN=1: Full functionality mode (by default).
 AT+CFUN=4: Airplane mode. RF function is disabled.
1. The W_DISABLE# control function is disabled in firmware by default. It can be enabled
byAT+QCFG=“airplanecontrol”command. This commandis under development.
2. The execution of AT+CFUN command will not affect GNSS function.
3.6. Power Supply
3.6.1. Power Supply Pins
EC25 provides four VBAT pins dedicated to connect with the external power supply. There are two
separate voltage domains for VBAT.
 Two VBAT_RF pins for module RF part
 Two VBAT_BB pins for module baseband part
The following table shows the details of VBAT pins and ground pins.
Table 6: VBAT and GND Pins
Pin Name Pin No. Description Min. Typ. Max. Unit
VBAT_RF 57,58
Power supply for module RF
part
3.3 3.8 4.3 V
VBAT_BB 59,60
Power supply for module
baseband part
3.3 3.8 4.3 V
GND
8,9,19,22,
36,46,
48,50~54,56,
Ground - 0 - V
NOTES