GE9
GE9
GE9
GE910 Hardware User Guide
10 Hardware User Guide
10 Hardware User Guide
10 Hardware User Guide
1vv0300962 Rev.4 2012-06-25
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved
page 56 of 73
Mod. 0805 2011-07 Rev.2
11.5.
RTC Bypass out
The VRTC pin brings out the Real Time Clock supply, which is separate from the rest of the
digital part, allowing having only RTC going on 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. NO Devices must be powered from this pin.
WARNING:
Never connect VRTC pin to VBATT.
11.6.
External SIM Holder Implementation
Please refer to the related User Guide (SIM Holder Design Guides, 80000NT10001a).
11.7.
ADC Converter
11.7.1.
Description
The on board A/D are 10-bit converter. They are able to read a voltage level in the range of
0÷1,3 volts applied on the ADC pin input, store and convert it into 10 bit word.
Min
Max
Units
Input Voltage range
0
1.3
Volt
AD conversion
-
10
bits
Resolution
-
< 1.3 mV
The input line is named as ADC_IN1 and it is available on PAD B1.
11.7.2.
Using ADC Converter
An AT command is available to use the ADC function.
The command is AT#ADC=1,2
The read value is expressed in mV
Refer to SW User Guide or AT Commands Reference Guide for the full description of this
function.
