Hardware Manual

The VRTC pin brings out the Real Time Clock supply, which is separate from the rest of the
digital part, allowing only RTC to be active when all the other parts of the device are off. To
this power output a backup capacitor can be added in order to increase the RTC autonomy
during power off of the battery.
NOTE:
NO devices must be powered from this pin.
A regulated power supply output is provided in order to supply small devices from the
module. This output is active when the module is ON and goes OFF when the module is shut
down. The operating range characteristics of the supply are:
Operating Range – VAUX/PWRMON power supply
Parameter
Min
Typical
Max
Output voltage
1.77V
1.8V
1.83V
Output current
100mA
Output bypass capacitor
(Inside the module)
1.0μF