Nokia 6220 Service Manual
RH-20
Company confidential
System Module and User Interface
CCS Technical Documentation
Page 18
Nokia Corporation.
Issue 1 10/2003
External Signals and Connections
Keyboard (board-to-board) Connector
Voltage at +25oC
1,7
Voltage at +60oC
1,79
IPA1 / IPA2
UEM
PA
Output Voltage
0
2.7
V
PA final stage quies-
cent current adjust-
ment
cent current adjust-
ment
Current range
0
5
mA
Pin
Signal
Min.
Nom
Max
Condition
Note
1
GND
0V
2
VLED+
VBAT
7.5V
7.5V
LED off
LED on
LED on
Supply Voltage for Key-
board LEDs
board LEDs
3
ROW(4)
0.7xVIO
0
0
1.8V
0.3xVIO
0.3xVIO
High
Low
Low
Keyboard matrix row 4
4
ROW(3)
0.7xVIO
0
0
VIO
0.3xVIO
0.3xVIO
High
Low
Low
Keyboard matrix row 3
5
COL(2)
0.7xVIO
0
0
VIO
0.3xVIO
0.3xVIO
High
Low
Low
Keyboard matrix column
2
2
6
ROW(2)
0.7xVIO
0
0
VIO
0.3xVIO
0.3xVIO
High
Low
Low
Keyboard matrix row 2
7
COL(1)
0.7xVIO
0
0
VIO
0.3xVIO
0.3xVIO
High
Low
Low
Keyboard matrix column
1
1
8
ROW(0)
0.7xVIO
0
0
VIO
0.3xVIO
0.3xVIO
High
Low
Low
Keyboard matrix row 0
9
VLED1-
0V
1.9V
1.9V
LED off
LED on
LED on
LED Katode Voltage
10
ROW(1)
0.7xVIO
0
0
VIO
0.3xVIO
0.3xVIO
High
Low
Low
Keyboard matrix row 1
11
COL(3)
0.7xVIO
0
0
VIO
0.3xVIO
0.3xVIO
High
Low
Low
Keyboard matrix column
3
3
12
COL(4)
0.7xVIO
0
0
VIO
0.3xVIO
0.3xVIO
High
Low
Low
Keyboard matrix column
4
4
13
VLED2-
0V
1.9V
1.9V
LED off
LED on
LED on
LED Katode Voltage
14
GND
0V