SARA-N2 / N3 series - System integration manual
UBX-17005143 - R13
System description
Page 14 of 95
C1-Public
SARA-N2 / N3 series modules switch from active mode to connected mode upon RF transmission or
reception operations turning back to active mode once RF operations are terminated or suspended.
The switch off routine of the SARA-N3 series modules can be properly triggered by the dedicated AT
command or by proper toggling of the
PWR_ON
line. The modules subsequently enter the power-off
mode and then they enter the non-powered mode by removing the
VCC
supply.
Switch ON:
•
Apply VCC
If there is no activity for
a defined time interval
•
Network paging
•
Data received over UART
•
Expiration of Periodic Update Timer
Incoming/outgoing data
or other dedicated device
network communication
No RF Tx/Rx in progress
Not
powered
Active
Connected
Deep
Sleep
Switch OFF:
•
Remove VCC
Figure 3: SARA-
N2 series modules’ o
perating modes transitions
•
Using PWR_ON
•
Expiration of timer
Incoming/outgoing data
or other dedicated device
network communication
No RF Tx/Rx in progress
Remove VCC
Switch ON:
•
PWR_ON
Not
powered
Power off
Active
Connected
Deep
sleep
Switch OFF:
•
AT+CPWROFF
•
PWR_ON
Apply VCC
If low power mode is enabled,
if AT inactivity timer is expired
Idle
•
Network paging
•
Data received
over UART
Sleep
Figure 4: SARA-
N3 series modules’ operating modes
transitions
