Real Time Clock - Fibocom G510 Hardware User Manual

Pull down DTR to wake up the module, as shown in the following figure:
Figure 3- 7 Pull down DTR, module wakes up 2s
3.5.3.2 Permanent Termination of Sleep Mode
The module Sleep mode is enabled and disabled by the ATS24 command. Before the command, G510
must be temporarily awaked.
 ATS24: ATS24 = 0 disables Sleep mode. The value of ATS24 (>0) will be saved but the mode will
not be save by restarting G510.

3.6 Real Time Clock

The main function of Real Time Clock (RTC) is keeping time. The RTC subsystem is embedded in the
PMU and operates in the entire module operating modes (Off, Idle, Sleep), as long as power is supplied
above the minimum operating level.
If the main power is not available, the backup battery or capacitor can be supplied to RTC by the
connector RTC pin.
When the main power was not supply, the backup battery or capacitor can be supplied to RTC by
interface connector RTC pin.
When the main power supply and VBCKUP is disconnected from module, the timer will reset and the
current time and date will be lost.When G510 power on again, please reconfigure the time and date.
G510 Hardware User Manual Page 21 of 42