UMTS/HSPA Module Series
UG95 Hardware Design
UG95_Hardware_Design Confidential / Released 23 / 72
HSPA Idle
The module has registered to the HSPA network and the module
is ready to send and receive data.
HSPA Data
HSPA data transfer is ongoing. In this mode, the power
consumption is decided by network setting (e.g. TPC pattern) and
data transfer rate.
Minimum
Functionality
Mode
AT+CFUN
command can set the module entering into a minimum functionality mode
without removing the power supply. In this case, both RF function and USIM card will
be invalid.
Sleep Mode
In this mode, the current consumption of the module will be reduced to the minimal
level. During this mode, the module can still receive paging message, SMS and voice
call from the network normally.
Power Down
Mode
In this mode, the power management unit shuts down the power supply for the
baseband part and RF part. Only the power supply for RTC remains. Software is not
active. The serial interface is not accessible. Operating voltage (connected to
VBAT_RF and VBAT_BB) remains applied.
3.5. Power Saving
3.5.1. Sleep Mode
UG95 is able to reduce its current consumption to a minimum value during the sleep mode. The following
section describes power saving procedure of UG95.
3.5.1.1. UART Application
If application processor communicates with module via UART interface, the following preconditions can
let the module enter into the sleep mode.
Execute AT command
AT+QCFG="uart/power",1,2
to close internal UART port.
Execute AT command
AT+QCFG="uart/power",0,0
to set UART into auto on/off mode.
Execute AT command
AT+QSCLK=1
to enable the sleep mode.
Drive DTR to high level.
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