User Guide

Pin Signal I/O Engine connection Notes
9 Col 1 -> APPLICATION
PROCESSOR
Kbc 1
10 Col 0 -> APPLICATION
PROCESSOR
Kbc0
11 Col 3 -> APPLICATION
PROCESSOR
Kbc 3
12 Col 2 -> APPLICATION
PROCESSOR
Kbc 2
13 Col 4 -> APPLICATION
PROCESSOR
Kbc 4
14 Col 5 -> APPLICATION
PROCESSOR
Kbc 5
15 LED+
<- N2301 VLEDOUT2
Discrete
Backlight SMPS
(controlled by
16 LED+ N2300)
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
(VDDS = 1.8V)
RM-49
Nokia Customer Care System Module
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