User Guide

After Sales
Technical Documentation
Display
THA–4S
Page 5–4
Original, 12/95
Side Volume Connector J2
The side Volume Keys are connected to the main LCD flexi, J2
Name Description
ROW0
Keyboard input line to system module
COL2 Keyboard output line to system module
ROW1 Keyboard input line to system module
COL3 Keyboard output line to system module
Functional Description
Circuit Description
General
The Display Module consists of one IC, a display and LED backlighting.
Display Driver D1 Signals
The Display Driver D1 is a programmable LCD controller driver, which is
able to drive the dot matrix LCD of up to 42 columns by 16–line
multiplexing. D1 contains a 5x7 dot matrix character generator.
Connection to the controller is via a serial link.
Pin Name Description
D0/S1 SDA Serial data from radio module
D1/P/_S Parallel/serial selection
D2/CAE Chip address enable
D3/SO Serial Data out
SYNC Synchronous
_STB/SCK SCL Clock for serial data
C/_D C_XD Command/data select input
CA0,CA1 Chip address
_CS XLCDEN Chip select
RESET LCD_RES Reset signal input
CLOCK LCD_CLK External clock input
_BUSY XBUSY Busy signal output
VLC1–5 LCD drive voltage supply
C0–41 LCD column outputs
R0–15 LCD row outputs