The proximity sensor is located on the upper flex assembly.
Features
The Proximity sensor has following features:
•
2.8V
•
1.8V compatible IOs
•
Low power consumption
•
20 mm working area
•
Factory calibrated, no calibration required in care
•
Pb free/RoHS compliancy
The proximity sensor works by sending out a beam of IR light, and then computing the distance to any nearby
objects from characteristics of the returned (reflected) signal. When the object is under 20 mm distance
detection will happen and output will go to high state (1.8V).
Reference design
Figure 74 Proximity sensor reference design and measurement points
Pin
Signal name
Description
1
Anode LED
No connection
2
GND
Ground
3
OUT
Sensor output (0V or 1.8V Push-Pull)
4
TEST
No connection
5
VCC
Supply voltage (2.4V - 2.8V)
6
Rprog
Program resistor
Touch screen controller
TSC2004 (N500 on Tilt FPC) is a touch screen controller for resistive touch pads. It contains a complete
ultralow-power, 12-bit, analog-to-digital (A/D) resistive touch screen converter, including drivers and control
logic to measure touch pressure.
It also has embedded pre-processing function to reduce the output bus load. The host interface in TSC2004
is I2C.
RM-505; RM-506
System Module and User Interface
Issue 1
COMPANY CONFIDENTIAL
Page 8 –25
Copyright © 2009 Nokia. All rights reserved.
