SARA-R4 series - System integration manual
UBX-16029218 - R20
System description
Page 27 of 128
C1-Public
illustrates a typical example of the module current consumption profile when the module is
in active mode. In such case, the module is registered with the network and, while active mode is
maintained, the receiver is periodically activated to monitor the paging channel for paging block
reception.
Detailed current consumption values can be found in the SARA-R4 series data sheet
ACTIVE MODE
Paging period
Time [s]
Current [mA]
Time [ms]
Current [mA]
RX
Enabled
0
100
0
100
Figure 13: Example of VCC current consumption profile with low power mode disabled (AT+UPSV=0), module registered with
the network: active mode is held, the receiver is periodically temporarily activated for paging block reception
1.5.2
Generic digital interfaces supply output (V_INT)
The
V_INT
output pin of the SARA-R4 series modules is generated by the module internal power
management circuitry when the module is switched on and it is not in the deep sleep power saving
mode.
The typical operating voltage is 1.8 V, whereas the current capability is specified in the SARA-R4
series data sheet
. The
V_INT
voltage domain can be used in place of an external discrete regulator
as a reference voltage rail for external components.
