User Guide

PAMS
Technical Documentation
UI Module UE4
Page 4 – 12
Original 11/97
Display
Backlighting is provided by LEDs, three LED on right and three on left
side of display. LEDs are compatible with CL270–YG and those are side
illuminating. Light is on when LIGHT–signal is in HIGH state.
Color of LED is for
Pin Line
Symbol
Parameter Mini-
mum
Typical
/ Nomi-
nal
Maxi-
mum
Unit Notes
14 VBAT Battery voltage 3.0 5.1 V Same supply for
Buzzer & Keyboard
43.4 51.4 59.6 mA LEDs
Keyboard
In keyboard backlighting is made by 6 LEDs. LEDs are compatible with
CL190–YG. Backlighting is on when LIGHT–signal is on HIGH state.
Color of LED is for
– Keyboard : yellow–green, λ = 570nm
Pin Line
Symbol
Parameter Mini-
mum
Typical
/ Nomi-
nal
Maxi-
mum
Unit Notes
14 VBAT Battery voltage 3.0 5.1 V Same supply for
Buzzer & Display
55.3 62.4 69.9 mA LEDs
Buzzer
Buzzer for DCT3 generation phone is SMD type.
[4V]
[0V]
[4V]
[0V]
[4V]
Typical value for node is marked with black when circuit is not active
Typical value for node is marked with gray when circuit is active