Ublox SARA-R5 Series System Integration Manual

SARA-R5 series - System integration manual
UBX-19041356 - R04 System description Page 15 of 118
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1.4 Operating modes
SARA-R5 series modules have several operating modes as defined in Table 4.
General Status
Operating Mode
Definition
Power-down
Not-powered mode
VCC supply not present or below operating range: module is switched off.
Power-off mode
VCC supply within operating range and module is switched off.
Normal operation
Deep-sleep mode
RTC runs with 32 kHz reference internally generated.
Idle mode
Module processor runs with 32 kHz reference internally generated.
Active mode
Module processor runs with 26 MHz reference internally generated.
Connected mode
RF Tx/Rx data connection enabled and processor core runs with 26 MHz reference.
Table 4: SARA-R5 series modules operating modes definition
Figure 5 describes the transition between the different operating modes.
If low power mode and PSM are enabled,
if AT inactivity timer & active timer are expired,
if no other concurrent activity is executed
• Upon expiration of the Periodic Update Timer
• Using PWR_ON pin
Incoming/outgoing data or
other dedicated network communication
No RF Tx/Rx in progress,
communication dropped
Remove VCC
Switch on:
• PWR_ON
• RTC alarm
Not powered
Power off
ActiveConnected Deep sleep
Switch off:
• AT+CPWROFF
Apply VCC
(SARA-R510S)
If low power mode is enabled,
if AT inactivity timer is expired,
if no other concurrent activity is executed
Idle
• Network paging
• Data received over UART
• RTC alarm
Apply VCC
(SARA-R500S and
SARA-R510M8S)
Figure 5: SARA-R5 series modules operating modes transitions
The initial operating mode of SARA-R5 series modules is the one with VCC supply not present or below
the operating range: the modules are switched off in not-powered mode.
Once a valid VCC supply is applied to the SARA-R500S and the SARA-R510M8S modules, this event
triggers the switch-on routine of the modules that subsequently enter the active mode.
Instead, once a valid VCC supply is applied to the SARA-R510S modules, they remain switched off in
power-off mode. Then the proper toggling of the PWR_ON input line is necessary to trigger the
switch-on routine of the modules that subsequently enter the active mode.
SARA-R5 series modules are fully ready to operate when in active mode: the available communication
interfaces are completely functional and the module can accept and respond to any AT command,
entering connected mode upon LTE signal reception / transmission.

Ublox SARA-R5 Series Specifications

General

Brand	Ublox
Model	SARA-R5 Series
Category	Control Unit
Language	English