User's Manual

SARA-G3 and SARA-U2 series - System Integration Manual
UBX-13000995 - R18 Advance Information System description
Page 28 of 206
1.5.1.5 VCC current consumption in fixed active-mode (power saving disabled)
Power saving configuration is by default disabled, or it can be disabled using the appropriate AT command (see
u-blox AT Commands Manual [3], AT+UPSV command). When power saving is disabled, the module does not
automatically enter idle-mode whenever possible: the module remains in active-mode.
The module processor core is activated during active-mode, and the 26 MHz reference clock frequency is used.
Figure 16 roughly describes the current consumption profile of the SARA-G300 and SARA-G310 modules (when
the EXT32K input pin is fed by external 32 kHz signal with characteristics compliant to the one specified in
SARA-G3 series Data Sheet [1], or by the 32K_OUT output pin provided by these modules), or the SARA-G340
and SARA-G350 modules (except ‘00’ versions), when power saving is disabled: the module is registered with
the network, active-mode is maintained, and the receiver and the DSP are periodically activated to monitor the
paging channel for paging block reception.
ACTIVE MODE
0.47-2.12 s
Paging period
Time [s]
Current [mA]
100
50
0
Time [ms]
Current [mA]
100
50
0
RX
Enabled
DSP
Enabled
Figure 16: VCC current consumption profile versus time of the SARA-G300 and SARA-G310 modules (with the EXT32K input pin
fed by proper external 32 kHz signal or by 32K_OUT output pin), or SARA-G340 and SARA-G350 modules (except ‘00’ versions),
when registered with the network, with power saving disabled: the active-mode is always held, and the receiver and the DSP
are periodically activated to monitor the paging channel