Specifications

WM_PRJ_Q2400_PTS_002 - 001
24th October 2002
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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 Pin number I/O I/O type Description
VCC 40 O Supply Digital supply
Operating conditions
Parameter Condition Min Max Unit
Ouput voltage I = 10mA 2.74 2.86 V
Output Current 10 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 Description
VCC_RTC 56 I/O Supply RTC Back-up supply
Operating conditions
Parameter Condition Min Max Unit
Input voltage 2 2.75 V
Input Current VCC=0V; t° = 25°C
VCC_RTC=2.5V
3 µA
Input Current VCC=0V; t°:-20°C / 55°C
VCC_RTC=2.5V
10 µA
Output voltage 2.4 2.75 V
Output current 2 mA