User Guide

CCS Technical Documentation System Module and User Interface
NEM-2
Issue 1 07/03 Copyright Nokia. All rights reserved.. Page 13
User Interface Modules
Keyboard
NEM-2 features a Qwerty keyboard, two soft keys and send/end keys with additional 4-
way rocker for gaming and music features. The keys are connected in a 6x7-matrix with
the UPP. Key pressing is detected by scanning procedure.
The applied “Bulls Eye” keypads are located on the UI board.
A “hotkey” for activating the music features and the volume up and down keys are
located on the engine board and connected to GENIO ports.
Display
130*130 pixel passive matrix colour STN display is used.
LCD connector
LCD interface signals are specified below.
No. Symbol Parameter min. typ. max. Unit Note
1 V
DD
Voltage supply 2.6 2.75 3.6 V Connected to
VFLASH1 (2.78V)
2 XRES Reset
(active low)
Hi:0.7*V
DDI
Lo:0
Hi: V
DDI
Lo:0.3*V
DDI
V
3 SDA Serial data Hi: 0.7*V
DDI
Lo: 0
Hi: V
DDI
Lo: 0.3*V
DDI
V
4 V
DDI
Logic voltage sup-
ply
1.7 1.8 VDD V Connected to
VIO (1.8V)
5 XCS Chip select
(active low)
Hi:0.7*V
DDI
Lo:0
Hi: V
DDI
Lo:0.3*V
DDI
V
6 SCLK Serial data clock Hi:0.7*V
DDI
Lo:0
Hi: V
DDI
Lo:0.3*V
DDI
V
7 VSS Ground 0 V
8 LED- LED ground 0.505 0.525 0.545 V Connected to
DC-DC con-
verter ‘feedback’
pin
9 NC --- -- -- -- -- Not connected
10 LED+ LED voltage supply 9 10.8 12 V LCD illumination