Nokia NSE-3 SERIES, Service Manual

Page: 84 / 217

PAMS
Technical Documentation
UI Module UE4
Page 4 – 5
Original 11/97
The Engine Interface
Pin Line Sym-
bol
Parameter Min Typ Max Unit Notes
1 ROW0 Keyboard matrix row 0 0 0.3xVBB V Low
0.7xVBB VBB High
2 ROW1 Keyboard matrix row 1 0 0.3xVBB V Low
0.7xVBB VBB High
3 ROW2 Keyboard matrix row 2 0 0.3xVBB V Low
0.7xVBB VBB High
4 ROW3 Keyboard matrix row 3 0 0.3xVBB V Low
0.7xVBB VBB High
5 ROW4 Keyboard matrix row 4 0 0.3xVBB V Low
0.7xVBB VBB High
6 COL0 Keyboard matrix column 0,
used for flip identification 0 0.3xVBB V Flip Open
0.7xVBB VBB Flip Closed
7 COL1 Keyboard matrix column 1 0 0.3xVBB V Low
0.7xVBB VBB High
8 COL2 Keyboard matrix column 2 0 0.3xVBB V Low
0.7xVBB VBB High
9 COL3 Keyboard matrix column 3 0 0.3xVBB V Low
0.7xVBB VBB High
10 COL4 Keyboard matrix column 4 0 0.3xVBB V Low
0.7xVBB VBB High
11 Signal1 Flip interrupt, not used 0 0.3xVBB V
0.7xVBB VBB
12 VF_IN Flash in 4.8 5.0 5.2 V Connected #13
13 VF_OUT Flash out 4.8 5.0 5.2 V Connected #12
14 VBATT Battery voltage 3.0 5.1 V
60 75 100 mA For lights
110 300 mA For buzzer
15
UAGND
* Analog ground 0 V
16 PWRON Power on key 0 0.3xVBB V Low / Power on
0.7xVBB VBB High
17 LCDCDX LCD driver code/data selection 0 0.3xVBB V Low
0.7xVBB VBB High
18 SCLK LCD driver serial clock 0 0.3xVBB V Low
0.7xVBB VBB High