WM_PRJ_Q2400_PTS_005 -00718th January 2006Confidential©All rights reservedPage: 37 / 51This document is the sole and exclusive property of WAVECOM. Not to bedistributed or divulged without prior written agreement.2.10.2.3 Battery cell with regulatorRegulator2.5 V ±10%(With very Low Iq)+VBATT 2 K 1KEnVoutGndVinShottkyDiodeVCC_RTCFigure 24: RTC supplied by a battery cell with regulatorEstimated range with 2 mAh rechargeable battery: ~3 days.Warning:Before battery cell assembly insure that cell voltage is lower than 2.75V toavoid any damage to the WISMO module.2.10.2.4 Non Rechargeable batteryThis is the less recommended solution.VCC_RTC(2.75 V max)Diode (Ex: BAS16)10Ex: CR2016(VARTA)Figure 25: RTC supplied by a non rechargeable batteryEstimated range with 85 mAh battery: 4000 h minimum.Note: The “non rechargeable battery” is always active, except when the moduleis ON.
