Nokia 9000i Service Manual page 120

RAE/RAK–1N
PDA Hardware
Table 3. DC characteristics of board to board connector Signals
Pin / Line Symbol
Type.
6 / UIF BACKLIGHT
8 / PDA, RBUSRxD
test
9 / PDA, RBUSTxD
test
12 / UIF XPWRON
15 / SIM BUZZEROUT
20–17 / COL(3:0)
UIF UIF
27–24 / UIF(3:0)
UIF
28 / UIF UIF4
Page 6 – 8
Mini- Typi- Maxi-
mum cal / mum
Nomi-
nal (1)
0V 0.7V
4.7V 4.85V 5.0V
2.735
V
0.4V
3.6V 4.85V 5.0V
0V 0.2V 0.7V
3.6V 4.85V 5.0V
0V 0.2V 0.7V
0V 0V 0.7V
4.65V
0V 0.7V
5.2V 7.2V 8.4V
0V 0.7V
4.7V 4.85V 5.0V
0V 0.7V
4.7V 4.85V 5.0V
0V 0.7V
4.7V 4.85V 5.0V
After Sales
Technical Documentation
Notes
Output low, back- Display
lights off and key-
pad illu- pad illu
Output high, back-
mination
lights on
control
State "1"
RBUS re-
ceived
data to data to
State "0"
CMT
State "1"
RBUS re-
ceived
data to
CMT (Dur- CMT (Dur
State "0"
ing CMT
FLASH
download
State "1" RBUS
1 mA load trans-
mitted
data from
State "0"
CMT
Input low, power on/
off
Floating when inac-
tive. A pull–up in
PSL+.
Output low, buzzer
off
Output high, buzzer
on
Input low keypad
columns
Input high
Output/Input low
keypad
row lines/
display
Output/Input high
data lines
Output/Input low keypad
row
read/write read/write
Output/Input high
strobe for
LCD driver
Original, 08/96
l