Q2406 Datasheet, PDF (45/81 Pages) List of Unclassifed Manufacturers – SELF CONTAINED E GSM/GPRS 900/1800 OR 850/1900 BI BAND MODULE

WM_PRJ_Q2400_PTS_002 - 002
24th January 2003
2.18 VCC output
This output can be used to power some external functions. VCC has to be used
as a digital power supply. This power supply is available when the module is
on.
Pin description
Signal
VCC
Pin number I/O I/O type
40
O Supply
Description
Digital supply
Parameter
Ouput voltage
Output Current
Operating conditions
Condition
I = 10mA
Min
2.74
Max
2.86
10
Unit
V
mA
2.19 VCC_RTC (Real Time Clock Supply)
2.19.1 Interface description
This pin is used as a back-up power supply for the internal Real Time Clock.
The RTC is supported by the module when powered on but a back-up power
supply is needed to save date and hour when the module is switched off.
If the RTC is not used this pin can be left open.
Pin description
Signal Pin number I/O I/O type
VCC_RTC
56
I/O Supply
Description
RTC Back-up supply
Operating conditions
Parameter
Condition
Input voltage
Input Current VCC=0V; t° = 25°C
VCC_RTC=2.5V
Input Current VCC=0V; t°:-20°C / 55°C
VCC_RTC=2.5V
Output voltage
Output current
Min
2
2.4
Max
2.75
3
10
2.75
2
Unit
V
µA
µA
V
mA
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