User's Manual

CE910-DUAL Hardware User Guide

1vv0301010 Rev .0 – 2012-07-10

10.6. RTC Bypass Output

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.

10.7. VAUX/PWRMON Power Output

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

200mA

Output bypass capacitor

(Inside the module)

2.2μF