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 March 24, 2000-12
RED
DLR2416
HIGH EFFICIENCY RED
DLO2416
GREEN
DLG2416
0.200" 4-Character 5 x 7 Dot Matrix
Alphanumeric Intelligent Display
®
Devices
with Memory/Decoder/Driver
FEATURES
• 0.200" 5 x 7 Dot Matrix Characters
• 128 Special ASCII Characters for English,
German, Italian, Swedish, Danish, and
Norwegian Languages
• Wide Viewing Angle: X Axis 50
°
Maximum,
Y Axis ±75
°
Maximum
• Close Multi-line Spacing, 0.8" Centers
• Fast Access Time, 110 ns at 25
°
C
• Full Size Display for Stationary Equipment
• Built-in Memory
• Built-in Character Generator
• Built-in Multiplex and LED Drive Circuitry
• Direct Access to Each Digit Independently
and Asynchronously
• Independent Cursor Function
• Memory Function: Clears Character and
Cursor Memory Simultaneously
• True Blanking for Intensity Dimming
Applications
• End-Stackable, 4-Character Package
• Intensity Coded for Display Uniformity
• Extended Operating Temperature Range:
–40
°
C to +85
°
C
• Superior ESD Immunity
• Wave Solderable
• TTL Compatible over Operating Temperature Range
• Interdigit Blanking
See Appnote 18, 19, 22, and 23 at www.infineon.com/opto.
DESCRIPTION
The DLR/DLO/DLG2416 is a four digit 5 x 7 dot matrix display module
with a built-in CMOS integrated circuit. This display is X/Y stackable.
The integrated circuit contains memory, ASCII ROM decoder, multi-
plexing circuitry and drivers. Data entry is asynchronous and can be
random. A display system can be built using any number of DLX2416s
since each digit can be addressed independently and will continue to
display the character last stored until replaced by another.
System interconnection is very straightforward. The least significant
two address bits (A0, A1) are normally connected to the like-named
inputs of all displays in the system. With two chip enables (CE1 and
CE2) four displays (16 characters) can easily be interconnected with-
out a decoder.
Data lines are connected to all DLX2416s directly and in parallel, as is the
write line (WR). The display will then behave as a write-only memory.
The cursor function causes all dots of a digit position to illuminate at
half brightness. The cursor is not a character, and when removed the
previously displayed character will reappear.
The DLX2416 has several features superior to competitive devices.
True “blanking” allows the designer to dim the display for more flexi-
bility of display presentation. Finally the CLR clear function will clear
the cursor RAM and the ASCII character RAM simultaneously.
.198
(5.03)
.800
(20.32)
max.
.600 ±.020
(15.24 ±.51)
.1.00 max.
(25.4)
.260 (6.60)
.100 16 pl.
(2.54) at Seating Plane
.260
(6.60) ref.
.012 (.30)
±.002 (.05)
18 pl.
.031
(.79)
.031
(.79)
.250
(6.35) .136
(3.45)
.050 4 pl.
(1.27)
.010 (.25) 8 pl.
Part No.
Pin 1
Indicator EIA Date Code .070 (1.78) ±.003 (.08)
Luminous
Intensity Code
.160 ±.020
(4.06 ±.51)
DLX2416
OSRAM YYWW Z
.018
(.46)
±.002 (.05) 18 pl.
.095
(2.41)
ref. Tolerance: XXX ±.01 (.25)
Dimensions in inches (mm)
DESCRIPTION
(continued)
The character set consists of 128 special ASCII characters for
English, German, Italian, Swedish, Danish, and Norwegian.
All products are subjected to out-going AQL’s of 0.25% for
brightness matching, visual alignment and dimensions, 0.065%
for electrical and functional.
Maximum Ratings
DC Supply Voltage.........................................–0.5 V to +7.0 Vdc
Input Voltage, Respect to GND
(all inputs)............................................–0.5 V to
V
CC
+0.5 Vdc
Operating Temperature ..................................... –40
°
C to +85
°
C
Storage Temperature....................................... –40
°
C to +100
°
C
Relative Humidity at 85
°
C ...................................................85%
Maximum Solder Temperature, 0.063" (1.59 mm)
below Seating Plane, t<5.0 s ........................................ 260
°
C
Optical Characteristics
Spectral Peak Wavelength
Red ...................................................................... 660 nm typ.
HER ..................................................................... 630 nm typ.
Green .................................................................. 565 nm typ.
Character Height..............................................0.200" (5.08 mm)
Time Averaged Luminous Intensity
at
V
CC
=5.0 V
Red.................................................................60
µ
cd/LED typ.
HER..............................................................100
µ
cd/LED typ.
Green ...........................................................120
µ
cd/LED typ.
LED to LED Intensity Matching at
V
CC
=5.0 V ........ 1.8:1.0 max.
LED to LED Hue Matching (Green only)
at
V
CC
=5.0 V .....................................................±2.0 nm max.
Viewing Angle (off normal axis)
Horizontal ...............................................................±50
°
max.
Vertical ....................................................................±75
°
max
Figure 1. Top View
18 17 16 15 14 13 12 11 10
1 2 3 4 5 6 7 8 9
digit 3 digit 2 digit 1 digit 0
Pins and Functions
Figure 2. Timing Characteristics—Write Cycle Waveforms
Note:
These waveforms are not edge triggered.
Pin Function Pin Function
1 CE1 Chip Enable 10 GND
2 CE2 Chip Enable 11 D0 Data Input
3 CLR Clear 12 D1 Data Input
4 CUE Cursor Enable 13 D2 Data Input
5CU
Cursor Select 14 D3 Data Input
6WR
Write 15 D6 Data Input
7 A1 Digit Select 16 D5 Data Input
8 A0 Digit Select 17 D4 Data Input
9
V
CC
18 BL Display Blank
TDS TDH
TW
TACC
TAH
TAS
TCEH
TCUH
TCES
TCUS
TCLRD
2.0 V
0.8 V
CE1, CE2
CU, CLR
A0, A1
D0-D6
WR
2.0 V
0.8 V
2.0 V
0.8 V
2.0 V
0.8 V
DC Characteristics
Parameter –40
°
C +25
°
C +85
°
C Units Condition
Min. Typ. Max. Min. Typ. Max. Min. Typ. Max.
I
CC
80 dots on — 135 160 — 110 130 — 95 115 mA
V
CC
=5.0 V
I
CC
Cursor
all dots at 50%
— — 135 — — 100 — — 100 mA
V
CC
=5.0 V
I
CC
Blank — 2.8 4.0 — 2.3 3.0 — 2.0 2.5 mA
V
CC
=5 V, BL=0.8 V
I
IL
(all inputs) 30 60 120 25 50 100 20 40 80
µ
A
V
IN
=0.8 V,
V
CC
=5.0 V
V
IH
(all inputs) 2.0 — — 2.0 — — 2.0 — — V
V
CC
=5.0 V ±0.5 V
V
IL
(all inputs) — — 0.8 — — 0.8 — — 0.8 V
V
CC
=5.0 V ±0.5 V
V
CC
4.5 5.0 5.5 4.5 5.0 5.5 4.5 5.0 5.5 V —
2000 Infineon Technologies Corp. • Optoelectronics Division • San Jose, CA DLR/DLO/DLG2416
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 2 March 24, 2000-12
2000 Infineon Technologies Corp. • Optoelectronics Division • San Jose, CA DLR/DLO/DLG2416
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 3 March 24, 2000-12
AC Characteristics
(guaranteed minimum timing parameters at
V
CC
=5.0 V ±0.5 V)
Note:
T
ACC
=Set Up Time+Write Time+Hold Time.
Figure 3. Internal Block Diagram
Parameter Symbol –40
°
C +25
°
C +85
°
C Unit
Chip Enable Set Up Time
T
CES
000ns
Address Set Up Time
T
AS
10 10 10 ns
Cursor Set Up Time
T
CUS
10 10 10 ns
Chip Enable Hold Time
T
CEH
000ns
Address Hold Time
T
AH
20 30 40 ns
Cursor Hold Time
T
CUH
20 30 40 ns
Clear Disable Time
T
CLRD
1.0 1.0 1.0
µ
s
Write Time
T
W
60 70 90 ns
Data Set Up Time
T
DS
20 30 50 ns
Data Hold Time
T
DH
20 30 40 ns
Clear Time
T
CLR
1.0 1.0 1.0
µ
s
Access Time
T
ACC
90 110 140 ns
3 2 1 0
Display
Rows 0 to 6
Timing and Control Logic
Row Control Logic
&
Row Drivers
Row Decoder
RAM Read Logic
RAM
Memory
ROM
7 Bit ASCII Code Column Data
D6
D5
D4
D3
D2
D1
D0 4480 bits
CUE
OSC 128
Counter
7
Counter
Column Enable
Latches and
Column Drivers
Latches
Column Decoder
WR
A0
A1
Write
4 X 7 bit
Columns 0 to 19
Address Lines
÷
÷
BL
128 X 35 Bit
ASCII
Character
Decode
Cursor
Memory
4 X 1 bit
Cursor Memory Bits 0 to 3
Decoder
Address
2000 Infineon Technologies Corp. • Optoelectronics Division • San Jose, CA DLR/DLO/DLG2416
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 4 March 24, 2000-12
Table 1. Loading Data Table
X=don’t care
Table 2. Loading Cursor Table
X=don’t care
■
= all dots on
Control Address Data Display Digit
BL CE1 CE2 CUE CU WR CLR A1A0D6D5D4D3D2D1D03210
H X X L X H H previously loaded display G R E Y
H H X L X X H XXXXXXXXXGREY
H X H L X X H XXXXXXXXXGREY
H L L L H L H LLHLLLHLHGREE
H L L L H L H L HHL HL HL HGRUE
H L L L H L H HLHLLHHLLGLUE
H L L L H L H HHHLLLLHLBLUE
L X X X X H H X X blank display
H L L L H L H HHHL L L HHHGLUE
H X X L X H L X X clears character displays
H L L L H L H X X see character code see character set
Digit
BL CE1 CE2 CE3 CE4 CUE CU WR CLR A1A0D6D5D4D3D2D1D03210
H X X X X L X H H previously loaded display B E A R
H X X X X H X H H display previously stored cursors B E A R
H H H L L H L L H LLXXXXXXHBEA
■
H H H L L H L L H LHXXXXXXHBE
■■
H H H L L H L L H HLXXXXXXHB
■■■
H H H L L H L L H HHXXXXXXH
■■■■
H H H L L H L L H HLXXXXXXL
■
E
■■
H X X X X L X H H disable cursor display B E A R
H H H L L L L L H HHXXXXXXLBEAR
H X X X X H H X H display stored cursors B E
■■
2000 Infineon Technologies Corp. • Optoelectronics Division • San Jose, CA DLR/DLO/DLG2416
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 5 March 24, 2000-12
Loading Data
Setting the chip enable (CE1, CE2) to their true state will
enable data loading. The desired data code (D0-D6) and digit
address (A0, A1) must be held stable during the write cycle for
storing new data.
Data entry may be asynchronous and random. Digit 0 is defined
as right hand digit with A1=A2=0.`
To clear the entire internal four-digit memory hold the clear
(CLR) low for 1.0
µ
s. All illuminated dots will be turned off
within one complete display multiplex cycle, 1.0 msec mini-
mum. The clear function will clear both the ASCII RAM and
the cursor RAM.
Loading Cursor
Setting the chip enables (CE1, CE2) and cursor select (CU) to
their true state will enable cursor loading. A write (WR) pulse
will now store or remove a cursor into the digit location
addressed by A0, A1, as defined in data entry. A cursor will be
stored if D0=1 and will removed if D0=0. The cursor (CU) pulse
width should not be less than the write (WR) pulse or errone-
ous data may appear in the display.
If the cursor is not required, the cursor enable signal (CUE) may
be tied low to disable the cursor function. For a flashing cursor,
simply pulse CUE. If the cursor has been loaded to any or all
positions in the display, then CUE will control whether the cur-
sor(s) or the characters will appear. CUE does not affect the
contents of cursor memory.
Display Blanking
Blanking the display may be accomplished by loading a blank or
space into each digit of the display or by using the (
BL
) display
blank input.
Setting the (
BL
) input low does not affect the contents of either
data or cursor memory.
A flashing circuit can easily be constructed using a 555 as table
multivibrator. Figure 4 illustrates a circuit in which varying R2
(100K~10K) will have a flash rate of 1.0 Hz~10 Hz.
The display can be dimmed by pulse width modulating the (BL)
at a frequency sufficiently fast to not interfere with the internal
clock. The dimming signal frequency should be 2.5 kHz or
higher. Dimming the display also reduces power consumption.
An example of a simple dimming circuit using a 556 is illus-
trated in Figure 5. Adjusting potentiometer R3 will dim the dis-
play by changing the blanking pulse duty cycle.
Design Considerations
For details on design and applications of the DLX2416 using
standard bus configurations in multiple display systems, or par-
allel I/O devices, such as the 8255 with an 8080 or memory
mapped addressing on processors such as the 8080, Z80,
6502, or 6800, refer to Appnote 15 at www.infineon.com/opto.
Figure 4. DLX2416—Flashing Circuit Using a 555 and
Flashing (Blanking) Timing
Figure 5. DLX2416—Dimming Circuit Using a 556 and
Dimming (Blanking) Timing
555
Timer
R1
4.7 KΩ
R2
100 KΩ
C4
0.01 µF
C3
10 µF
VCC=5.0 V
To BL
Pin on
Display
1
2
3
4
8
7
6
5
Blanking Pulse Width
≈50% Duty Factor
500 ms
2 Hz Blanking Frequency
1
0
~
~
~
~
1
0
200 µs Blanking Pulse Width
4 µs min., 196 µs max.
5 KHz Blanking Frequency
~
~
~
~
C3
1000 pF
1
2
3
4
5
6
7
14
13
12
11
10
9
8
556
Dual Timer
R2
47 KΩ
R1
200Ω
C1
4700 pF
C4
0.01 µF
R3
500 KΩ
VCC=5.0 V
Dimming (Blanking)
Control
C2
0.01 µF
To BL Pin
on Display
2000 Infineon Technologies Corp. • Optoelectronics Division • San Jose, CA DLR/DLO/DLG2416
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 6 March 24, 2000-12
Figure 6. Character Set
Notes:
1. High=1 level
2. Low=0 level
3. Upon power up, the device will initialize in a random state.
Figure 7. Typical Schematic, 16-Character System
ASCII
CODE
D0
D1
D2
D3
0
0
0
0
0
1
0
0
0
1
0
1
0
0
2
1
1
0
0
3
0
0
1
0
4
1
0
1
0
5
0
1
1
0
6
1
1
1
0
7
0
0
0
1
8
1
0
0
1
9
0
1
0
1
A
1
1
0
1
B
0
0
1
1
C
1
0
1
1
D
0
1
1
1
E
1
1
1
1
F
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
0
1
2
3
4
5
6
7
D6 D5 D4 HEX
CE2
CE1
CE2
CE2
D
0
-D
6
+5
GND
BL
D
15
D
12
D
11
D
8
D
7
D
4
D
3
D
0
CLR
WR
CU
CUE
A A
0 1
7
14
2
CE1
CE1
2000 Infineon Technologies Corp. • Optoelectronics Division • San Jose, CA DLR/DLO/DLG2416
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 7 March 24, 2000-12
Electrical and Mechanical Considerations
Voltage Transient Suppression
We 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
V
CC
. Additionally, the LEDs may
cause transients in the power supply line while they change
display states. The common practice is to place .01 mF capaci-
tors close to the displays across
V
CC
and GND, one for each
display, and one 10 mF capacitor for every second display.
ESD Protection
The silicon gate CMOS IC of the DLX2416 is quite resistant to
ESD damage and capable of withstanding discharges greater
than 2.0 kV. However, take all the standard precautions, normal
for CMOS components. These include properly grounding per-
sonnel, tools, tables, and transport carriers that come in con-
tact with unshielded parts. If 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 DLX2416 can be hand soldered with SN63 solder using a
grounded iron set to 260
°
C.
Wave soldering is also possible following these conditions: Pre-
heat 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 temperature of 245
°
C
±
5
°
C with a dwell between 1.5 sec.
to 3.0 sec. Exposure to the wave should not exceed tempera-
tures above 260
°
C for five seconds at 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 minutes. Addition of mild saponifiers is accept-
able. Do not use commercial dishwasher detergents.
For faster cleaning, solvents may be used. Carefully select any
solvent as some may chemically attack the nylon package.
Maximum exposure should not exceed two minutes at ele-
vated temperatures. Acceptable solvents are TF (trichorotriblu-
orethane), TA, 111 Trichloroethane, and unheated acetone.
Note:
Acceptable commercial solvents are: Basic TF, Arklone,
P. Genesolv, D. Genesolv DA, Blaco-Tron TF, Blaco-Tron TA,
and Freon 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.infineon.com/opto.
An alternative to soldering and cleaning the display modules is
to use sockets. Standard pin DIP sockets .600" wide with 0.100"
centers work well for single displays. Multiple display assem-
blies are best handled by longer SIP sockets or DIP sockets
when available for uniform package alignment. Socket manufac-
turers are Aries Electronics, Inc., Frenchtown, NJ; Garry Manu-
facturing, New Brunswich, NJ; Robinson-Nugent, New Albany,
IN; and Samtec Electronic Hardware, New Albany, IN.
For further information refer to Appnote 22 at www.infin-
eon.com/opto.
Optical Considerations
The 0.200" high characters of the DLX2416 gives readability up
to eight feet. Proper filter selection enhances readability over
this distance.
Filters enhance the contrast ratio between a lit LED and the
character background intensifying the discrimination of differ-
ent characters. The only limitation is cost. Take into consider-
ation the ambient lighting environment for the best cost/benefit
ratio for filters.
Incandescent (with almost no green) or fluorescent (with
almost no red) lights do not have the flat spectral response of
sunlight. Plastic band-pass filters are an inexpensive and effec-
tive way to strengthen contrast ratios.
The DLR2416 is a standard red display and should be
matched with long wavelength pass filter in the 600 nm to
620 nm range. The DLO2416 is a high efficiency red display
and should be matched with a long wavelength pass filter in
the 470 nm to 590 nm range. The DLG2416 should be
matched with a yellow-green band-pass filter that peaks at
565 nm. For displays of multiple colors, neutral density gray
filters offer the best compromise.
Additional contrast enhancement is gained by shading the dis-
plays. Plastic band-pass filters with built-in louvers offer the
next step up in contrast improvement. Plastic filters can be
improved further with anti-reflective coatings to reduce glare.
The trade-off is fuzzy characters. Mounting the filters close to
the display reduces this effect. Take care not to overheat the
plastic filter by allowing for proper air flow.
Optimal filter enhancements are gained by using circular polar-
ized, anti-reflective, band-pass filters. Circular polarizing further
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 Homalite, 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 Plas-
tic Corp., Burlingame, CA; Photo Chemical Products of Califor-
nia, Santa Monica, CA; .E.E.-Atlas, Van Nuys, CA.
Refer to Appnote 23 at www.infineon.com/opto.
