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Nokia 6020b Service Manual

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Nokia Customer Care
7 - System Module
28
COMPANY CONFIDENTIAL
Issue 1 03/2005
Copyright © 2005 Nokia. All Rights Reserved.
LCD connector
The TE signal is not used.
Table 10: LCD connector 
Pin 
No:
Description
Type
Symbol
Parameter
Min
Typical
Max
Unit
1
Power supply
OUT
VLED-
LED power supply cur-
rent
15
mA 
2
Power supply 
voltage
IN
VDDI
Operating voltage
1.65
1.8
1.95
V
3
Ground
-
GND
4
Bidirectional 
serial data
I/O
SDA
Input voltage high
0.7 x 
VDDI
VDDI
V
Input voltage low
0
0.3 x 
VDDI
Output voltage high @  -
1.0 mA
0.8 x 
VDDI
VDDI
Output voltage low @   -
1.0 mA
0
0.2 x 
VDDI
5
Chip select
IN
CSX
Input voltage high
0.7 x 
VDDI
VDDI
V
Input voltage low
0
0.3 x 
VDDI
6
Ground
-
GND
7
TE output to syn-
chronise MCU to 
frame writing
OUT
TE
Output voltage high @  -
1.0 mA
0.8 x 
VDDI
VDDI
V
Output voltage low @   -
1.0 mA
0
0.2 x 
VDDI
8
Reset
IN
RESX
Input voltage high
0.7 x 
VDDI
VDDI
V
Input voltage low
0
0.3 x 
VDDI
9
Serial clock
IN
SCL
Input voltage high
0.7 x 
VDDI
VDDI
V
Input voltage low
0
0.3 x 
VDDI
10
Ground
-
GND
11
Power supply 
voltage
IN
VDD
Operating voltage
2.6
2.75
 2.9
V
12
Power supply 
IN
VLED+
LED power supply cur-
rent
15
mA