Industrial Electronic Engineers, Inc.
SIZE
A
CODE IDENT NO.
05464
SL330-X4X
I
Van Nuys, California
SCALE N/A
REV
C
SHEET 4
04/14/05
2.0
BLOCK DIAGRAM
LEVEL CONVERTERS
LCD CELL
ROW DRIVER
SHIFT REGISTER
SHIFT REGISTER
DEDICATED
ON-BOARD
MICROPROCESSOR
CONTROLLER
ON-BOARD
DC-TO-DC
VOLTAGE
CONVERTER
FOR LIQUID CRYSTAL
DISPLAY CELL
DRIVE VOLTAGES
DTR
CTS
TX
RX
EIA-232
RETURN
RX -
RX +
TX +
TX -
OR
EIA-422
+12VDC
LEVEL CONVERTERS
COLUMN
FIGURE 1