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Description
Parameter
Min
Max
Unit
Notes
Threshold for
charging,
rising (N2300)
V
MSTR+
2.1
V
Typical value
Threshold for
charging,
falling (N2300)
V
MSTR-
1.9
V
Typical value
Battery interface electrical characteristics
Table 18 Battery IF electrical characteristics
Description
Parameter
Max
Unit
Operation voltage
V
IN
4.23
VDC
Current rating
I
IN
0.9
A
Internal interfaces
Name of Connection
Connector reference
Joystick connector
X4500
Display
X4400
ALS
V4400
Vibra
M2100
Microphone
B2100
Earpiece
B2101
IHF speaker
B2102
l2C
I2C is an Inter IC bus and aimed for slow control of peripherals.
The device uses I2C to interconnect QWERTY keyboard controller to RAP.
Keyboard interface electrical characteristics
Description
Parameter
Min
Typ
Max
Unit
Notes
High-level
input voltage
V
IH
0.65* V
DDS
V
DDS
0.3+ V
DDS
V
Row
Low-level
input voltage
V
IL
-0.3
0
0.35* V
DDS
V
Row
High-level
output
voltage
V
OH
1.62
V
DDS
1.98
V
Column
Low-level
output
voltage
V
OL
0
0.45
V
Column
RM-88
Nokia Customer Care
System Module
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COMPANY CONFIDENTIAL
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