User Guide

Nokia Customer Care System Module
Company Confidential RH-30/RH-31
Issue 2 11/2004 © 2004 Nokia Corporation. Page 19
External signals and connections
Keyboard (board-to-board) connector
Pin Signal Min. Nom Max Condition Note
1 GND 0V
2 VLED+ VBAT
7.5V
LED off
LED on
Supply Voltage for Keyboard
LEDs
3 ROW(4) 0.7xVIO
0
1.8V
0.3xVIO
High
Low
Keyboard matrix row 4
4 ROW(3) 0.7xVIO
0
VIO
0.3xVIO
High
Low
Keyboard matrix row 3
5 COL(2) 0.7xVIO
0
VIO
0.3xVIO
High
Low
Keyboard matrix column 2
6 ROW(2) 0.7xVIO
0
VIO
0.3xVIO
High
Low
Keyboard matrix row 2
7 COL(1) 0.7xVIO
0
VIO
0.3xVIO
High
Low
Keyboard matrix column 1
8 ROW(0) 0.7xVIO
0
VIO
0.3xVIO
High
Low
Keyboard matrix row 0
9 VLED1- 0V
1.9V
LED off
LED on
LED Katode Voltage
10 ROW(1) 0.7xVIO
0
VIO
0.3xVIO
High
Low
Keyboard matrix row 1
11 COL(3) 0.7xVIO
0
VIO
0.3xVIO
High
Low
Keyboard matrix column 3
12 COL(4) 0.7xVIO
0
VIO
0.3xVIO
High
Low
Keyboard matrix column 4
13 VLED2- 0V
1.9V
LED off
LED on
LED Katode Voltage
14 GND 0V
15 VLED3- 0V
1.9V
LED off
LED on
LED Katode Voltage
16 GND 0V