Figure 82 SIM interface block diagram
Battery connector
Table 9 Battery IF
Signal
From
To
Min
Nom
Max
Condi-tion
Note
GND
Global
Batt (-)
Global GND
VBAT
Batt (+)
3.1
5.4
Battery Voltage
BSI
LITTI
0
2.78
Analog input, Battery Size
Indicator Resistor, 100
kohm pull up to 2.78V
(VBB1).
Battery BL-5CA
• Type: BL-5CA
• Technology: Li-Ion, 4.2 V charging, 3.1 V cut-off
• Capacity: 700 mAh.
The BSI resistor is placed on the main PWB as the telephone supports only one battery capacity. Further a
BSI connection is added to the Flash interface. The battery temperature is measured by a NTC resistor placed
on the main PWB, opposite to the Battery. Battery pack has an impedance of 130 - 150 mΩ (0 – 45 °C).
Figure 83 BL-5CA battery block
RH-99; RH-100; RH-105; RH-106
System module
Issue 2
COMPANY CONFIDENTIAL
Page 6 –13
Copyright © 2007 Nokia. All rights reserved.