VK202-25 Matrix Orbital, VK202-25 Datasheet - Page 34

• Manufacturer Part Number: VK202-25
• Description: VFD ALPHA/NUM DISPL 20X2 SER/I2C
• Manufacturer: Matrix Orbital
• Series: VK202-25r

Specifications of VK202-25

• Outline L X W X H: 116.00mm x 37.00mm x 29.48mm
• Viewing Area: 89.75mm L x 11.50mm W
• Display Format: 20 x 2
• Display Type: Character
• Format: 5 x 7 Dots
• Character Size: 4.70mm H x 2.40mm W
• Interface: Serial
• Operating Temperature: -20°C ~ 70°C
• Product: Character Display Modules
• Character Count X Line: 20 x 2
• Module Size (w X H X T): 116 mm x 37 mm x 29.48 mm
• Operating Temperature Range: - 20 C to + 70 C
• Dot Format: 5 x 7
• Viewing Area (w X H): 89.75 mm x 11.5 mm
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Supply: -
• Number Of Dots: -
• Lead Free Status / Rohs Status: Details
• Other names: 635-1020

9. Appendix: Glossary
VK202-25 rev. 05
ASCII
Backlight
Baud Rate
Binary Number A number written using binary notation which only uses zeros and ones
Bit
Bitmap
Byte
CCFL
Configuration
Contrast
Controller
DB-9
Firmware
Font
Font Metric
Hexadecimal
I²C
Interface
American Standard Code for Information Interchange. A 7 bit binary code
representing the english alphabet, decimal numbers and common punctuation
marks. "Also includes control characters" such as carriage return or end of text.
An 8 bit superset of the standard ASCII codes is often used today to include
foreign characters and other symbols. These supersets are often called
extended ASCII character sets.
A backlit display is illuminated from behind to provide nighttime and improved
daytime readability.
The (data and signaling) bit transmission rate of an RS232 device.
The smallest unit of information a computer can work with. Each bit is either 0
or 1. Binary digit.
A representation, consisting of rows and columns of dots, of a graphics image
in computer memory. The value of each dot (whether it is filled in or not) is
stored in one or more bits of data.
A grouping of eight binary bits
Cold Cathode Fluorescent Lamp. A high brightness backlighting source
consists of a fluorescent tube powered by a high voltage A.C. source.
The way a system is set up, or the assortment of components that make up the
system. Configuration can refer to either hardware or software, or the
combination of both.
The ratio of luminance between the light state of the display to the dark state of
the display.
The microcontroller or PC used to control the Matrix Orbital display unit.
The designation of a connector used in the RS232 interface: 9 pin connector
Software (programs or data) that has been written onto read-only memory
(ROM). Firmware is a combination of software and hardware. ROMs, PROMs
and EPROMs and flash EEPROMs that have data or programs recorded on
them are firmware.
A design for a set of characters. A font is the combination of typeface and other
qualities, such as size, pitch, and spacing.
A definition of where font is to be placed, such as margins and spacing
between characters and lines.
Refers to the base-16 number system, which consists of 16 unique symbols:
the numbers 0 to 9 and the letters A to F. For example, the decimal number 15
is represented as F in the hexadecimal numbering system. The hexadecimal
system is useful because it can represent every byte (8 bits) as two
consecutive hexadecimal digits. It is easier for humans to read hexadecimal
numbers than binary numbers.
Short for Inter-IC, a type of bus designed by Philips Semiconductors in the
early 1980s, which is used to connect integrated circuits (ICs). I²C is a multi-
master bus, which means that multiple chips can be connected to the same
bus and each one can act as a master by initiating a data transfer.
A means by which two systems interact.
34