Quectel EG25-G - Power Saving

LTE Module Series
EG25-G Hardware Design
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3.5. Power Saving
3.5.1. Sleep Mode
EG25-G is able to reduce its current consumption to a minimum value during the sleep mode. The
following section describes power saving procedures of EG25-G module.
3.5.1.1. UART Application
If the host communicates with module via UART interface, the following preconditions can let the module
enter into sleep mode.
 Execute AT+QSCLK=1 command to enable sleep mode.
 Drive DTR to high level.
The following figure shows the connection between the module and the host.
RXD
TXD
RI
DTR
AP_READY
TXD
RXD
EINT
GPIO
GPIO
Module
Host
GND
GND
Figure 3: Sleep Mode Application via UART
 Driving the host DTR to low level will wake up the module.
 When EG25-G has a URC to report, RI signal will wake up the host. Please refer to Chapter 3.19 for
details about RI behaviors.
 AP_READY will detect the sleep state of the host (can be configured to high level or low level
detection). Please refer to AT+QCFG="apready"* command for details.

“*” means under development.
NOTE