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DLX1414 Datasheet(PDF) 1 Page - OSRAM GmbH

No. de pieza DLX1414
Descripción Electrónicos  Intelligent Display Products
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Fabricante Electrónico  OSRAM [OSRAM GmbH]
Página de inicio  http://www.osram.com
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DLX1414 Datasheet(HTML) 1 Page - OSRAM GmbH

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 2000 Infineon Technologies Corp. • Optoelectronics Division • San Jose, CA
www.infineon.com/opto • 1-888-Infineon (1-888-463-4636)
OSRAM Opto Semiconductors GmbH & Co. OHG • Regensburg, Germany
www.osram-os.com • +49-941-202-7178
1
May 31, 2000-12
play also provides internal memory for the four digits. With this
approach the user can asynchronously address one of four dig-
its and load new data without regard to the LED multiplex tim-
ing.
Figure 1 is a block diagram of the DLX1414. The device con-
sists of four (5x7) LED arrays and a single CMOS integrated
chip. The IC chip contains the column drivers and row drivers,
128 character ROM, four word x7 bit Random Access Memory,
oscillator for multiplexing, multiplex counter/decoder, cursor
memory, address decoder, and miscellaneous control logic.
This application note is intended to serve as a design and appli-
cation guide for users of the DLX1414 alphanumeric Intelligent
Display. The information presented covers device electrical
description and operation, considerations for general circuit
design, and interfacing the DLX1414 to microprocessors.
Electrical & Mechanical Description
The internal electronics of the Intelligent Display eliminates all
the traditional difficulties of using multi-digit light emitting dis-
plays (decoding, drivers and multiplexing). The Intelligent Dis-
Applying the DLX1414
Intelligent Display® Products
Appnote 15
Figure 1. Block Diagram–DLX1414
Rows 0 to 6
Display
Columns 0 to 19
Display
Output
Logic
Ro w Co ntro l Lo g i c
& Row Drivers
Row Decoder
ROM
128x35 Bit
ASCII
Character
Decode
4480 Bits
D6
D5
D4
D3
D2
D1
D0
Write
Address
Decoder
RAM
Memory
Timing and Control Logic
4x7 Bit
OSC
÷128
Counter
÷7
Counter
7 Bit ASCII Code
RAM Read Logic
Column Data
WR
A0
A1
3
2
1
0


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