Board and module connections
Figure 59 Board and module connections
Energy management
Battery and charging
Battery
Supported battery type is BL-5K.
Battery connector
Blade battery connector type.
•
VBAT (Battery voltage)
•
BSI (Battery size indication)
•
GND (Battery ground)
Charging
This phone is charged through the micro USB connector. The phone supports dedicated, host or hub chargers.
Charging is controlled by energy management, and external components are needed to protect the baseband
module against EMC, reverse polarity and transient frequency deviation.
Backup battery
When the main battery is not attached EM ASIC (N2200) goes in backup mode using back-up battery that
supplies voltage to RTC in EM ASIC (N2200).
RM-484; RM-485; RM-486
System Module and User Interface
Issue 1 COMPANY CONFIDENTIAL Page 8 –9
Copyright © 2009 Nokia. All rights reserved.
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