DLO1414 - OSRAM OPTO SEMICONDUCTORS

Lead (Pb) Free Product - RoHS Compliant

DLR1414, DLO1414, DLG1414

0.145" 4-Character 5 x 7 Dot Matrix

Alphanumeric In telligent Display® Devices with Memory/Decoder/Driver

2006-01-23 1

Description

The DLR/DLO/DLG1414 is a four digit 5 x 7 dot matrix display module with a bui lt-in CMOS integrated circuit.

The integrat ed circuit contains memory, ASCII ROM decoder, multiplex circuitry and drivers. Data entry is asynchro-

nous and random. A displa y system can be b uilt using any n umber of DLX1414s since each charact er in any DLX1414

can be addressed independently and will continue to display the char acter last stored until replaced by another.

System interconnection is very straightforward. The least significant two addre ss bits (A0, A1) are normally connected

to the like named inputs of all displays in the system. Data lines are connected to all DLX1414s directly and in par allel

as is the write line (WR). The display then will behave as a write only memory.

The DLX1414 has several fe atures superior to competitive devices. The character set consists of 128 special ASCII

characters for English, German, Italian, Swedish, Danish, and Norwegian.

Features

• 0.145" High, Dot Matrix Character

• 128 Special ASCII Characters for English, German,

Italian, Swedish, Danish, and Norwegian

Languages

• Wide Viewing Angle: X Axis ±50°, Y Axis ±75°

• Close Vertical Row Spacing, 0.800" Centers

• Fast Access Time, 110 ns at 25°C

• Compact Size for Hand Held Equipment

• Built-in Memory

• Built-in Character Generator

Built-in Multiplex and LED Drive Circuitry

• Direct Access to Each Digit Independently and Asyn-

chronously

• TTL Compatible, 5.0 Volt Power

• Low Power Consumption, 20 mA per Character Typi-

cal

• Intensity Coded for Display Uniformity

• Extended Operat ing Temperature Range:

–40°C to +85°C

• End Stac kable, 4-Character Package

See Appnotes 18, 19, 22, and 23 for additional

information.

Ordering Information

Type Color of Emission Ordering Code

DLR1414 red Q68000A8091

DLO1414 high efficiency red Q68000A8092

DLG1414 green Q68000A8093

2006-01-23 2

DLR1414, DLO1414, DLG1414

IDOD5218

Number

DLX1414 Z

OSRAM YYWW V

0.51 (0.020)

4.45 (0.175)

2.34 (0.092)

17.78 (0.700) max.

0.56 (0.022)

3.66 (0.144)

20.32 (0.800) max.

6.1 (0.240) ref.

15.24 (0.600)

±0.51 (0.020)

5.33 (0.210)

0.3 (0.012)

±0.05 (0.002)

4.06 (0.160)

±0.51 (0.020)

2.41 (0.095) ref.

0.46 (0.018) 12 pl.

2.54 (0.100) 10 pl.

At Seating Plane

Indicator

Pin 1 Date Code

1.27 (0.050) 4 pl.

Intensity Code

Luminous

0.25 (0.010) 4 pl.

1.78 (0.070)

±0.08 (0.003)

Tolerance: ±0.254 (0.010)

EIA

4 pl.

12 pl.

Part

DLR1414, DLO1414, DLG1414

2006-01-23 3

Maximum Ratings

Parameter Symbol Value Unit

Operating temperature range Top – 40 … + 85 °C

Storage temperature range Tstg – 40 … + 100 °C

DC supply voltage – 0.5 … + 7.0 V

Input voltage levels relative to GND (all inputs) – 0.5 to VCC + 0.5 V

Solder temperature 0.063“ (1.59 mm)

below seating plane, t < 5.0 s Ts260 °C

Relative humidity at 85°C RH 85 %

Characteristics

(TA = 25 °C)

Parameter Symbol Values Unit

DLR1414

DLO1414

DLG1414

red high

efficiency

red

green

Wavelength at peak emission (typ.)

IF = 0 mA λpeak 660 630 565 nm

Viewing angle (off normal axis)hor. (typ.)

ver. (typ.) 2ϕ±50

±75 ±50

±75 deg

deg.

Character Height h0.145

3.7 0.145

3.7 inch

Time averaged luminous intensity1) (typ.)

(100% brightness, VCC = 5.0 V)

1) Peak luminous intensity values can be calculated by multiplying these values by 7.

50 60 70 µcd/LED

LED to LED intensity matching (max.) 1.8:1.0 1.8:1.0 1.8:1.0

LED to LED hue matching at VCC = 5.0 V (max.) ±2.0 nm

2006-01-23 4

DLR1414, DLO1414, DLG1414

Top View

DC Characteristics

Parameter –40°C+25°C+85°CUnit Condition

Min. Typ. Max. Min. Typ. Max. Min. Typ. Max.

ICC 4 Digits

on 20

dots/digit

—90 120 —80 105 —70 95 mA VCC=5.0 V

ICC Blank —2.8 4.0 —2.3 3.0 —2.0 2.5 mA VCC=5.0 V,

WR=5.0 V

VIN=0 V

IIL (all

inputs) 30 60 120 25 50 100 20 40 80 µA VIN=0.8 V,

VCC=5.0 V

VIH 2.0 ——2.0 ——2.0 ——V VCC=5.0 V

±0.5 V

VIL — — 0.8 ——0.8 ——0.8 VVCC=5.0 V

±0.5 V

VCC 4.5 5.0 5.5 4.5 5.0 5.5 4.5 5.0 5.5 V —

Pins and Functions

Pin Function Pin Function Pin Function

1D5 Data Input 5A0 Digit Select 9D1 Data Input

2D4 Data Input 6VCC 10 D2 Data Input

3WR Write 7GND 11 D3 Data Input

4A1 Digit Select 8D0 Data Input (LSB) 12 D6 Data Input (MSB)

IDPA5301

Digit 3 Digit 2 Digit 1 Digit 0

162345

1012 11 9 8 7

DLR1414, DLO1414, DLG1414

2006-01-23 5

Timing Characteristics (VCC=4.5 V)

Note: These waveforms are not edge triggered.

AC Characteristics (guaranteed minimum timing parameters at VCC=5.0 V ±0.5 V)

Parameter Symbol –40°C+25°C+85°C Unit

Address Set Up Time TAS 10 10 10 ns

Address Hold Time TAH 20 30 40 ns

Write Time TW60 70 90 ns

Data Set Up Time TDS 20 30 50 ns

Data Hold Time TDH 20 30 40 ns

Access Time1) TACC 90 110 140 ns

1) TACC= Set Up Time + Write Time + Hold Time.

TAS

0, A1

0-D6

TAH

TACC

2.0

0.8

TDS TDH

2.0

0.8

2.0

0.8

2006-01-23 6

DLR1414, DLO1414, DLG1414

X=Don’t care

Typical Interconnection for 32 Characters

Loading Data State Table

WR A1 A0 D6 D5 D4 D3 D2 D1 D0 Display Digit

3210

Hpreviously loaded display G R E Y

L L L H L L L H L H G R E E

L L H H L H L H L H G R U E

L H L H L L H H L L G L U E

L H H H L L L L H L B L U E

L L H H L L H H L H B L E E

L L L H L H L H H H B L E W

LXXsee character code see character set

IDCD5040

D31

D0-D6

D28

GND

A0-A1

D24D27 D20D23 D16D19 D15 D12 D11 D8 D7 D3D4 D0

DATA

ADDRESS

D0-D6

A0, A1 72

74138

WRITE

ADDRESS

DLR1414, DLO1414, DLG1414

2006-01-23 7

Block Diagram

IDBD5072

RAM Read Logic

Memory

RAM

4 x 7 bit

Write

Address

Decoder

Row Decoder

ROM

ASCII

128 x 35 bit

Character

Decode

4480 bits

Column Decoder

Latches

7-bit ASCII Code

Column

Latches and

Enable

Column Data

Row Drivers

Row Control Logic

OSC 128

Counter Counter

Rows 0 to 6

3 2 1 0

Timing and Control Logic

Columns 0 to 19

Display

Drivers

Column

2006-01-23 8

DLR1414, DLO1414, DLG1414

Character Set

Notes:

1. High=1 level

2. Low= 0 level

3. Upon power up, the device will initialize in a random state.

IDCS5087

ASCII

CODE

HEX

D4D5D6

0000

100

010

011

100

101

110

111

DLR1414, DLO1414, DLG1414

2006-01-23 9

Attention please!

The information describes the type of component and shall not be considered as assured ch aracteristics.

Terms of delivery and rights to change design reserved. Due to technical requirements components may contain

dangerous substances. For information on the types in question please contact our Sales Organization.

If printed or downloaded, please find the latest version in the Internet.

Packing

Please use the recycling operators known to you. We can also help you – get in touch with your nearest sales office.

By agreement we will take packing material back, if it is sorted. You must bear the costs of transport. For packing

material that is retu rned to us unsorted or which we are not obliged to a ccept, we shall have t o invoice you for any costs

incurred.

Components used in life-support devices or systems must be expressly authorized for such purpose! Critical

components1) may only be used in life-support devices or systems2) with the express written app roval of OSRAM OS.

1) A critical component is a component used in a life-s upport device or system whose failure can reasonably be expected to cause the failure

of that life-support device or system, or to affect its safety or the effectiveness of that device or system.

2) Life support devices or syst ems are intended (a) to be implan ted in the human body, o r (b) to support and/or maintain a nd sustain human

life. If they fail, it is reasonable to assume that the health and the life of the user may be endangered.

Revision History: 2006-01-23

Previous Version: 2004-11-04

Page Subjects (major changes since last revision) Date of change

all completely rework 2004-08-31

all Lead free device 2006-01-23

DLR1414, DLO1414, DLG1414

2006-01-23 10

Design Considerations

For details on design and applications of the DLX1414 using

standard bus configurations in multiple disp lay systems, or parallel

I/O devices, such as the 8255 with an 8080 or memory mapped

address ing on processors such as the 8080, Z80, 6502, 8748, or

6800, refer to Appnote 15 at www.osram-os.com.

Electrical & Mechanical Considerations

Voltage Transient Suppression

We strongly recommend that the same power supply be used for

the display and the components that interface with the display to

avoid logic inputs higher than VCC. Additionally, the LEDs may

cause transients in the power supply line while they change dis-

play states. The common practice is to place .01 mF capacitors

close to the displays across VCC and GND, one for each display,

and one 10 mF capacitor for every second display.

ESD Protection

The metal gate CMOS IC of the DLX1414 is extremely immune to

ESD damage. However, users of these devices are encouraged to

take all the standard precautions, normal for CMOS components.

These include properly grounding personnel, tools, tables, and

transport carriers that come in contact with unshielded parts.

Where these conditions are not, or cannot be met, keep the leads

of the device shorted together or the parts in anti-static packaging.

Soldering Considerations

The DLX1414 can be hand soldered with SN63 solder using a

grounded iron set to 260×C.

Wave soldering is also possible following these cond itions: Preheat

that does not exceed 93×C on the solder side of the PC board or a

package surface temperature of 85×C. Water soluble organic acid

flux (except carboxylic acid) or rosin-based RMA flux without

alcohol can be used.

Wave tempera ture of 245×C ±5×C with a dwell between 1.5 sec. to

3.0 sec. Exposure to the wave should not exceed temperatures

above 260×C for five seconds a t 0.063" below the seating plane.

The packages should not be immersed in the wave.

Post Solder Cleaning Procedures

The least offensive cleaning solution is hot D.I. water (60 ×C) for

less than 15 min utes. Add ition of mild saponifiers is acceptable. Do

not use commercial dishwasher detergents.

For faster cleaning, solvents may be used. Carefully select sol-

vents as some may chemically attack the nylon package. Maxi-

mum exposure should not exceed two minutes at elevated

temperatur es. Accepta b le so lv en ts are TF (t richlorot rifluoretha ne),

TA, 111 Trichloroethane, and unheated acetone.

Note: Acceptable commercial solve nts are: Basi c TF, Arklone P,

Genesolve D, Blaco-tron TF, Genesolve DA, and Blaco-tron TA.

Unacceptable solvents contain alcohol, methanol, methylene chlo-

ride, ethanol, TP35, TCM, TMC, TMS+, TE, or TES. Since many

commercial mixtures exist, contact a solvent vendor for chemical

composition information. Some major solvent manufacturers are:

Allied Chemical Corporation, Specialty Chemical Division, Morris-

town, NJ; Baron-Blakeslee, Chicago, IL; Dow Chemical, Midland,

MI; E.I. DuPont de Nemours & Co., Wilmington, DE.

For further information refer to Appnotes 18 and 19 at

www.osram-os.com.

An alternative to soldering and cleaning the display modules is to

use sockets. Eighteen pin DIP sockets .600" wide with .100" cen-

ters work well for single displays. Multiple display assemblies are

best handled by longer SIP sockets or D IP sock ets when a vailable

for uniform package alignment. Socket manufacturers are Aries

Electronics, Inc., Frenchtown, NJ; Garry Manufacturing, Ne w Brun-

swick, NJ; Robinson-Nugent, New Albany, IN; and Samtec Elec-

tronic Hardware, New Albany, IN.

For further information refer to Appnote 22 at www.osram-os.com.

Optical Considerations

The .145" high characters of the DLX1414 gives readability up to

eight feet. The user can build a display that enhances readability

over this distance by proper filter selection.

Using filters emphasizes the contrast ratio between a lit LED and

the character background. This will increase the discrimination of

different characters. The only limitation is cost. Remember to take

into consideration the ambient lighting environment for the best

cost/benefit ratio for filters.

Incandescent (wit h almost no g reen) or fluorescent (w ith almost no

red) lights do not have the flat spectral response of sunlight. Plas-

tic band-pass filter s are an in expensive and effective wa y to

strengthen contr a st ratios. The D LR1 41 4 i s a standard red d ispl ay

and should be mat c hed w it h lon g wavelength pass filter in the 600

nm to 620 nm range. For displays of multiple colors, neutral den-

sity grey filters offer the best compromise.

The DLO1414 is a high efficiency red display and should be

matched with a long wavelength pass filter in the 570 nm to

590 nm range. The DLG1414 should be matched with a yel-

low-green band-p ass filter that peaks at 565 nm. For displays of

multiple colors, neutral density gray filters offer the best compro-

mise.

Additional contrast enhancement can be gained by shading the

display s. Plastic band -pass filters with b uilt-in louv ers off er the ne xt

step up in contrast improvement. Plastic filters can be improved

further with anti-refle ctive coatings to re duce glare . The trad e-off is

fuzzy characters. Mounting the filters close to the display reduces

this effect. Take care not to overheat the plastic filter by allowing f or

proper air flow.

Optimal filter enhancements are gained by using circular polar-

ized, anti-ref lective, band-pass filters. The circular polarizing fur-

ther enhances contrast by reducing the light that travels through

the filter and reflects back off the display to less than 1%.

Several filter manufacturers supply quality filter materials. Some of

them are: Panelgraphic Corporation, W. Caldwell, NJ; SGL Homa-

lite, Wilmington, DE; 3M Company, Visual Products Division, St.

Paul, MN; Polaroid Corporation, Polarizer Division, Cambridge,

MA; Marks Polarized Corporation, Deer Park, NY, Hoya Optics,

Inc., Fremont, CA.

One last note on mounting filters: recessing displays and bezel

assemblies is an inexpensive way to provide a shading effect in

overhead lighting situations. Several bezel manufacturers are:

R.M.F. Products, Batavia, IL; Nobex Components, Griffith Plastic

Corp., Burlingame, CA; Photo Chemical Prod ucts of Califor nia,

Santa Monica, CA; I.E.E.-Atlas, Van Nuys, CA.

Refer to Appnote 23 at www.osram-os.com.

Published by

OSRAM Opto Semiconductors GmbH

Wernerwerkstrasse 2, D-93049 Regensburg