SARA-G3 and SARA-U2 series - System Integration Manual
UBX-13000995 - R26
System description
Page 31 of 217
1.5.1.5
VCC current consumption in fixed active mode (power saving disabled)
Power saving configuration is disabled by default, or it can be disabled using the appropriate AT command (see
the
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 the
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
