Quectel EC200T Series User Manual

LTE Standard Module Series
EC200T Series Hardware Design
EC200T_Series_Hardware_Design 32 / 90
3.5.1.4. USB Application without USB Suspend Function
If the host does not support USB Suspend function, please disconnect USB_VBUS with additional control
circuit to let the module enter into sleep mode.
 Execute AT+QSCLK=1 command to enable the sleep mode.
 Ensure the MAIN_DTR is held at high level or keep it open.
 Disconnect USB_VBUS.
The following figure shows the connection between the module and the host.
USB_VBUS
USB_DP
USB_DM
AP_READY
VDD
USB_DP
USB_DM
GPIO
Module Host
MAIN_RI
EINT
Power
Switch
GPIO
GND
GND
Figure 5: Sleep Mode Application without Suspend Function
Switching on the power switch to supply power to USB_VBUS will wake up the module.
Please pay attention to the level match shown in dotted line between the module and the host.
3.5.2. Airplane Mode
When the module enters airplane mode, the RF function will be disabled, and all AT commands related to
it will be inaccessible. This mode can be set via the following ways.
Hardware:
The W_DISABLE# pin is pulled up by default. Its control function for airplane mode is disabled by default,
and AT+QCFG=“airplanecontrol”,1 can be used to enable the function. Driving it to low level can make
the module enter airplane mode.
NOTE

Quectel EC200T Series Specifications

General

Brand	Quectel
Model	EC200T Series
Category	Control Unit
Language	English