Quectel EC200T Series User Manual

LTE Standard Module Series
EC200T Series Hardware Design
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3.5.1.1. UART Application
If the host communicates with module via UART interface, the following preconditions should be met to let
the module enter sleep mode.
 Execute AT+QSCLK=1 to enable sleep mode.
 Drive MAIN_DTR to high level.
The following figure shows the connection between the module and the host.
MAIN_RXD
MAIN_TXD
MAIN_RI
MAIN_DTR
AP_READY
TXD
RXD
EINT
GPIO
GPIO
Module
Host
GND
GND
Figure 2: Sleep Mode Application via UART
 Driving MAIN_DTR to low level by host will wake up the module.
 When EC200T series has a URC to report, the URC will trigger the behavior of MAIN_RI pin. Please
refer to Chapter 3.17 for details about MAIN_RI behavior.
3.5.1.2. USB Application with USB Remote Wakeup Function
If the host supports USB Suspend/Resume and remote wakeup functions, the following three
preconditions must be met to let the module enter sleep mode.
 Execute AT+QSCLK=1 command to enable the sleep mode.
 Ensure the MAIN_DTR is kept at high level or kept open.
 The host’s USB bus, which is connected with the module’s USB interface, enters Suspend state.
The following figure shows the connection between the module and the host.

Quectel EC200T Series Specifications

General

Brand	Quectel
Model	EC200T Series
Category	Control Unit
Language	English