Touch Screen Controller; Display - Nokia MOBILE TERMINAL Service Manual

RM-356
System Module and User Interface
Pin
4 TEST
5 VCC
6 Rprog

Touch screen controller

TSC2004 (N2450) 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.

Display

Display
Rapido has an external display buffer with 8Mbit display RAM. The input interfaces for display buffer are
ViSSI-12 for image data and LoSSI for commands.
The data interface between display buffer and display is CDP (Compact Display Port), display commands are
sent by LoSSI interface. The display backlight control is controlled by the display.
Issue 1
Signal name
Figure 67 Touch screen controller
COMPANY CONFIDENTIAL
Copyright © 2008 Nokia. All rights reserved.
Description
No connection
Supply voltage (2.4V - 2.8V)
Program resistor
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