WM_PRJ_Q2400_PTS_005 -00718th January 2006Confidential©All rights reservedPage: 36 / 51This document is the sole and exclusive property of WAVECOM. Not to bedistributed or divulged without prior written agreement.2.10.2 Typical implementation2.10.2.1 CapacitorVCC_RTCRegulator2.5 V ±10%(With very Low Iq)+VBATT 470 1KEx: 470uFShottkyDiodeEnVoutGndVinFigure 22: RTC Supplied by a capacitorEstimated range with 470 μF Capacitor: ~30 seconds.2.10.2.2 Super CapacitorRegulator2.5 V ±10%(With very Low Iq)+VBATT 470 1KEx: EECE0EL474S(Panasonic)ShottkyDiodeEnVoutGndVin VCC_RTCFigure 23: RTC supplied by a super capacitorEstimated range with 0.47 Farad Gold Capacitor: 2 hours min.Note: the Gold Capacitor maximum voltage is 2.5 V.
