Airplane Mode; Power Supply; Power Supply Pins - Quectel EC25-V User Manual

Opening power switch to supply power to USB_VBUS will wake up the module.
NOTE
You should pay attention to the level match shown in dotted line between module and host. Refer to
document [1] for more details about EC25 power management application.

3.5.2. Airplane Mode

When the module enters into airplane mode, the RF function does not work, and all AT commands
correlative with RF function will be inaccessible. This mode can be set with the following ways.
Hardware:
The W_DISABLE# pin is pulled up by default; driving it to low level will let the module enter into airplane
mode.
Software:
Command AT+CFUN provides the choice of the functionality level <fun>=0, 1, 4.
 AT+CFUN=0: Minimum functionality mode; both USIM and RF function are disabled.
 AT+CFUN=1: Full functionality mode (by default).
 AT+CFUN=4: Airplane mode. RF function is disabled.
NOTES
1. The W_DISABLE# control function is disabled in firmware by default. It can be enabled by AT
command AT+QCFG="airplanecontrol". Refer to document [2] for details.
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.
VBAT_RF with two pins for module RF part.

VBAT_BB with two pins for module baseband part.

The following table shows the VBAT pins and ground pins.
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