Table of Contents
Paragraph Title Page
Industrial Electronic Engineers, Inc. SIZE
ACODE IDENT NO.
05464 S03858–06–0205
Van Nuys, California SCALE N/A REV C SHEET 2
1.0 GENERAL INFORMATION...............................................................................................................5
1.1 Introduction.......................................................................................................................................5
1.2 Application........................................................................................................................................5
1.3 Standard Features ...........................................................................................................................5
1.4 Description.......................................................................................................................................5
2.0 LOGICAL STRUCTURE AND FUNCTION......................................................................................6
2.1 LCD Module......................................................................................................................................6
2.1.1 Signal Description............................................................................................................................6
2.2 LCD Controller.................................................................................................................................7
2.2.1 Instruction Register (IR)..................................................................................................................7
2.2.2 Data Register (DR)..........................................................................................................................7
2.2.3 Busy Flag.........................................................................................................................................7
2.2.4 Address Counter (AC)......................................................................................................................7
2.2.5 Display Data RAM (DD RAM) ..........................................................................................................8
2.2.6 Character Generator ROM (CG ROM)............................................................................................8
2.2.7 Character Generator RAM (CG RAM)..............................................................................................9
2.2.8 Parallel/Serial Data Conversion Circuitry, Timing Generator Circuitry............................................9
3.0 THEORY OF OPERATION..............................................................................................................9
3.1 Serial Interface.................................................................................................................................9
3.2 Error Detection and Reporting.........................................................................................................9
3.3 Power–up Sequence........................................................................................................................9
3.4 Transmission Sequence for Instructions.........................................................................................9
3.5 Instruction Set..................................................................................................................................9
3.5.1 Instruction Summary........................................................................................................................9
3.5.2 Sample Instructions In BASIC..........................................................................................................9
3.6 Down–Loadable Special Characters...............................................................................................9
3.7 Self–test...........................................................................................................................................9
3.8 Diagnostics......................................................................................................................................9
4.0 INTERFACE AND CONTROL.........................................................................................................9
4.1 Connector Assignment (P2)............................................................................................................9
4.2 Jumper Settings...............................................................................................................................9
5.0 ELECTRICAL SPECIFICATIONS....................................................................................................9
5.1 Absolute Maximum Ratings .............................................................................................................9
5.2 Normal Operating Ratings ...............................................................................................................9
5.2.1 Power–up Supply Requirements.....................................................................................................9
5.2.2 External Reset Requirements..........................................................................................................9
5.3 Interface Signals...............................................................................................................................9
5.3.1 Serial Interface Signals ....................................................................................................................9
6.0 ENVIRONMENTAL CHARACTERISTICS........................................................................................9
6.1 Operating..........................................................................................................................................9
