User Guide

NSM–5
UI section
PAMS Technical Documentation
Page 4
Issue 1 02/2002
 Nokia Corporation
NotesUnitMaxTypMinParameterSignal
PWRONX Power on signal 0
0.7 x VBB
0.3 x VBB
VBB
V Power on key
ROW5/
LCDCD
LCD command / data 0
0.7 x VBB
0.3 x VBB
VBB
Keyboard matrix
row 5
LCD driver code/
data selection
SCL Serial clock for LCD 0
0.7 x VBB
0.3 x VBB
VBB
LCD driver serial
clock
SDA Serial data for LCD 0
0.7 x VBB
0.3 x VBB
VBB
LCD driver serial
data
LCDEN LCD enable 0
0.7 x VBB
0.3 x VBB
VBB
LCD driver chip
select
LCDRSTX Reset 0
0.7 x VBB
0.3 x VBB
VBB
LCD driver reset
GND 0 0 Ground
BUZZER 0 0.3 x VBB PWM low level
0.7 x VBB VBB PWM high level
440 4700 Hz Buzzer PWM fre-
quency
0 50 % PWM duty cycle
VBB 2.7 2.8 2.9 V Logic supply volt-
age
LIGHT 0
0.7 x VBB
0.3 x VBB
VBB
Illumination con-
trol
EARN 17.6 788 mV Connected to
COBBA EARN
output.
EARP 17.6 788 mV Connected to
COBBA EARP
output.
CCUT Charging control 0
0.7 x VBB
0.3 x VBB
VBB
Stops charging
LCD Module Interface
Pin Line
Symbol
Parameter Mini-
mum
Typical
/ Nomi-
nal
Maxi-
mum
Unit Notes
1 VBB Supply voltage 2.7 2.8 2.9 V
300 uA
2 SCLK Serial clock input 0 4.0 MHz VBB = 2.7V
0 VBB V
3 SDA Serial data input 0 0.3xVBB
0.7xVBB VBB