User Guide

CCS Technical Documentation 7 - System Module & UI
Company Confidential NMM-3
Issue 1 (11/2003) Copyright  2003 Nokia Corporation Page 7-17
Company Confidential
LED brightness is controlled by a PLUM to DLIGHT and KLIGHT enable. In order to improve
the LED’s lifetime, the brightness is reduced at high levels of ambient temperature.
UI Module Pin Description:
UI Connector LCD Connector Function
PIN Name PIN Name
1 VFLASH1 10 VFLASH1 Power supply for analog display circuits (2.8V)
2 - 9 PSD Not Connected
3 -VLCDLED 1 VLED- LCD LED power supply (cathode)
4 +VLCDLED 2 VLED+ LCD LED power supply (anode)
5 VIO 3 VDDI Power supply for digital display circuits (1.8V)
6 DIFD7 4 D7 Display Bi-directional Bus (MSB)
7 COL0 Keypad Column
8 ROW5 Keypad Row
9 GND Ground
10 GND Ground
11 COL1 Keypad Column
12 DIFD6 5 D6 Display Bi-directional Bus
13 DIFD5 6 D5 Display Bi-directional Bus
14 DIFD4 7 D4 Display Bi-directional Bus
15 DIFD3 8 D3 Display Bi-directional Bus
16 +VLCDLED Key Backlighting +Ve
17 EARN Earpiece -Ve
18 EARP Earpiece +Ve
19 -VLCDLED Key Backlighting –Ve
20 DIFD2 13 D2 Display Bi-directional Bus
21 DIFD1 14 D1 Display Bi-directional Bus
22 DIFD0 15 D0 Display Bi-directional Bus (LSB)
23 DIFA0 16 A0 Command (A0 = low) or parameter (A0 = high)
TOKO 350mA pk
boost circuit.
Switching
freq=600kHz
constant current sink
(8.5mA)
+KEYLED
+LCDLED
-KEYLED
-LCDLED
10mA max
15mA
White
LCD
LEDS
Blue
KEY
LEDS
ENGINE
MODULE
UI
MODULE
DLIGHTPWM
KLIGHTPWM
VFLASH1
VBAT
0.5V
33R
10.5V nom
3.5V
1.9V
220R
22mA
22R