Pin
Signal
I/O
Engine connection
Notes
8
Row2
->
Helen3
Kbr_2
9
Row1
->
Helen3
Kbr_1
10
Row6
->
Helen3
Kbr_6
11
Row0
->
Helen3
Kbr_0
12
Col0
->
Helen3
Kbc_0
13
Row5
->
Helen3
Kbr_5
Voice switch
connection
14
Row4
->
Helen3
Kbr_4
15
GND
GND
16
Col3
->
Helen3
Kbc_3
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-42
Nokia Customer Care
System Module
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Company Confidential
9241872 (Issue 1)
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