User Guide

PAMS
Technical Documentation
UI Module UE4S
Page 4–6
Original 03/98
NotesUnitMaxTypMinParameterLine Sym-
bol
Pin
0 4.0 MH
z
19 SDA LCD driver serial data 0 0.3xVBB V Low
0.7xVBB VBB High
20 LCDCSX LCD driver chip select 0 0.3xVBB V Low / Active
0.7xVBB VBB High
21 LCDRSTX LCD driver reset 0 0.3xVBB V Low / Active
0.7xVBB VBB High
22
UDGND*
Digital ground 0 V
23 BUZZER Buzzer PWM control 0 2.85 V
24 VL Supply voltage 2.7 2.8 2.85 V
300 uA
25 SPARE Call indicator LED 0 0.3xVBB V Not used in UI
0.7xVBB VBB
26 LIGHT Illumination control 0 0.3xVBB V Low
0.7xVBB VBB High / Active
27 EARN Speaker neutral 0 1.78 Vpp
28 EARP Speaker positive 0 1.78 Vpp
* Ground position is on connector NOT BATTERY.
114
2815
LCD
UIM connector pads viewed from the GND side