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GSM/GPRS/GNSS Module Series
MC60 Hardware Design
MC60_Hardware_Design Confidential / Released 33 / 99
in backup mode.
When powered by VRTC, the reference internal circuit design in all-in-one and stand-alone solutions is
shown below.
Figure 12: VRTC is Powered by a Rechargeable Battery
Figure 13: VRTC is Powered by a Capacitor
A rechargeable or non-chargeable coin-cell battery can also be used here. For more information, please
visit http://www.sii.co.jp/en/.
It is recommended to keep SYSTEM_3.3V powered all the time.
NOTE