WM_PRJ_Q2400_PTS_005 -00718th January 2006Confidential©All rights reservedPage: 35 / 51This document is the sole and exclusive property of WAVECOM. Not to bedistributed or divulged without prior written agreement.2.9 VCC outputThis output can be used to power some external functions. VCC has to be usedas a digital power supply. This power supply is available when the module is on.Operating conditionsParameter Condition Min Max UnitOutput voltage I = 10 mA 2.74 2.86 VOutput Current 10 mA2.10 VCC_RTC (Real Time Clock Supply)2.10.1 GeneralVCC_RTC input is used to provide a back-up power supply for the internal RealTime Clock.The RTC is supported by the module when powered on but a back-up powersupply is needed to save date and time information when the module isswitched off.If the RTC is not used this pin can be left open.Back-up Power Supply can be provided by: a capacitor, a super capacitor, a non rechargeable battery, a battery cell with regulator.
