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1.0
GENERAL INFORMAT ION
1.1
Introduction
This specification describes the serial interface Daystar Nova model 03858–21–0205, a 4–line supertwisted
liquid crystal display (LCD) with 40 characters per line.
Model Number Designation System
03858
Transflective STN
LCD w/EL Backlight
* Parallel standard, Serial optional
1.2
Application
Daystar Nova modules provide alphanumeric information which is easily readable in high ambient light or in
darkness with optional backlight. The low power requirements of the modules make them suitable for portable
battery operated equipment. The wide operating temperature range (–30° to +80°C) is ideal for most outdoor
applications. The choice of a preferential viewing hemisphere is not necessary because of the excellent wide
angle viewing characteristics of the new Super Bi–refringent Effect (SBE) liquid crystal cell used in this display.
The serial data input model of the 03858–21 Daystar Nova display allows communication between a host
processor and the display by means of a serial RS–232C interface. This provides the capability to
communicate over a longer distance than is possible with the parallel model. The RS–232 interface is a two
wire communication link.
1.3
Standard Features
Serial data communication via RS–232C
Multiple baud rates: 1200, 2400, 4800, and 9600
Low power consumption
Wide temperature range
Built–in diagnostics
Down–loadable special characters
1.4
Description
The serial input Daystar Nova module includes an on–board CMOS microprocessor which translates serial
data into parallel data and provides other enhancements over the parallel model. The serial data may be set by
a jumper to accommodate speeds of 1200, 2400, 4800, and 9600 baud. Parity may also be set by jumper for
odd, even, or no parity. The electrical interface is RS–232C compatible.
A single +5 Volt nominal power supply is required for operation. The unit operates from 4.50 Volts to 5.50 Volts.
The typical power requirement for the module is 120mW.
The module weighs 9.1 ounces (257.7 grams).
Industrial Electronic Engineers, Inc.
Van Nuys, California
–
21
–
4x40 Format
Reserved
0
2
1 =
Parallel Data Input
2 = Serial Data Input
SIZE
CODE IDENT NO.
A
05464
SCALE
N/A
REV B
0
*
0 = External
0 = Aviation
Backlight Power
Green Color
S03858–21–0205
SHEET 5
5
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