Quectel EC200A Series User Manual

LTE Standard Module Series
3.2. Sleep Mode
In sleep mode, the module can reduce power consumption to a very low level, the following section
describes power saving procedures of EC200A series module.
3.2.1. UART Application
If the host communicates with module via UART interface, the following preconditions should be met to
enable 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 the module has a URC to report, the URC will trigger the behavior of MAIN_RI pin. Please
refer to Chapter 4.9 for details about MAIN_RI behavior.
3.2.2. 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.

Quectel EC200A Series Specifications

General

Brand	Quectel
Model	EC200A Series
Category	Control Unit
Language	English