Wavecom GS64 Spécifications Page 83

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Product Technical Specification & Customer Design Guidelines
Interfaces
3.17.2 Pin Description
Signal Pin number I/O I/O type Description
VRTC 25 I/O Supply RTC Back-up supply
3.17.3 Application
Back-up Power Supply can be provided by:
A super capacitor
A non rechargeable battery
A rechargeable battery cell.
3.17.3.1 Super Capacitor
Figure 36: RTC supplied by a gold capacitor
Estimated range with 0.47 Farad Gold Cap: 25 minutes minimum.
Note
: The Gold Capacitor maximum voltage is 2.5V.
© Confidential
Page: 82 / 116
This document is the sole and exclusive property of WAVECOM. Not to be distributed or divulged without
prior written agreement.
WA_DEV_Q64_PTS_001-003 January 9, 2009
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