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, 2000-01
FEATURES
• 0.270" 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 Vertical Row Spacing, 0.800" 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
• Each Character Independently Accessed
• TTL Compatible, 5.0 Volt Power,
V
IH
=2.0 V,
V
IL
=0.8 V
• Independent Cursor Function
• Memory Clear Function
• Display Blank Function for Blinking and Dimming
• End-Stackable, 4-Character Package
• Intensity Coded for Display Uniformity
• Extended Operating Temperature Range:
–40
°
C to +85
°
C
• Wave Solderable
See Appnotes 18, 19, 22, and 23 at www.infineon.com/
opto.
DESCRIPTION
The DLR/DLO/DLG3416 is a four character 5 x 7 dot matrix display
module with a built-in CMOS integrated circuit.
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 DLX3416s
since each character can be addressed independently and will con-
tinue 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 four chip enables, four dis-
plays (16 characters) can easily be interconnected without a decoder.
Data lines are connected to all DLX3416s 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 character position to illuminate
at half brightness. The cursor is not a character, and when removed
the previously displayed character will reappear.
The DLX3416 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.
.270
(6.86)
.790
(20.07)
±.010
(.25)
.600 (15.24)
±.020 (.51)
at Seating
Plane
340 (8.64)
.100 (2.54)
±.015 (38)
at Seating Plane
.157 (.40)
±.007 (.18) .175
(4.45)
Part
No.
Pin 1
Indicator EIA Date Code
.160 (4.06) ±.020 (.51)
DLX3416
OSRAM Z
.145 (3.68) ±.015 (.38)
at Seating Plane
YYWW
.260 (6.60)
±.007 (.18)
1.300 (33.02) max
.020 (.51) x .012(.30)
Leads 22 pl.
Luminous
Intensity Code
.325
(8.26)
Dimensions in inches (mm)
RED
DLR3416
HIGH EFFICIENCY RED
DLO3416
GREEN
DLG3416
0.270" 4-Character 5 x 7 Dot Matrix
Alphanumeric Intelligent Display
®
Devices
with Memory/Decoder/Driver
2000 Infineon Technologies Corp. • Optoelectronics Division • San Jose, CA DLR/DLO/DLG3416
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, 2000-01
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
(non-condensing) .............................................................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 .............................................0.270" (6.86 mm)
Time Averaged Luminous Intensity
at
V
CC
=5.0 V
Red................................................................ 60
µ
cd/LED typ.
HER............................................................. 120
µ
cd/LED typ.
Green .......................................................... 140
µ
cd/LED typ.
Dot to Dot 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
DC Characteristics
Parameter –40
°
C +25
°
C +55
°
C Units Condition
Min. Typ. Max. Min. Typ. Max. Min. Typ. Max.
I
CC
80 dots on — 150 190 — 135 165 — 118 150 mA
V
CC
=5.0 V
I
CC
Cursor — — 170 — — 140 — — 125 mA
V
CC
=5.0 V
I
CC
Blank — 2.8 4.0 — 2.3 3.0 — 2.0 2.5 mA
V
CC
=5.0 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
V
IL
(all inputs) — — 0.8 — — 0.8 — — 0.8 V
V
CC
=5.0 V
V
CC
4.5 5.0 5.5 4.5 5.0 5.5 4.5 5.0 5.5 V —
22 21 20 1918 17 16 15 14 13 12
1 2 3 4 5 6 7 8 9 10 11
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 12 GND
2 CE2 Chip Enable 13 NC
3
CE3
Chip Enable 14
BL
Blanking
4
CE4
Chip Enable 15 NC
5
CLR
Clear 16 D0 Data Input
6
V
CC
17 D1 Data Input
7 A0 Digit Select 18 D2 Data Input
8 A1 Digit Select 19 D3 Data Input
9
WR
Write 20 D4 Data Input
10 CU Cursor Select 21 D5 Data Input
11 CUE Cursor Select 22 D6 Data Input
Tds Tdh
TW
Tacc
Tah
Tas
Tceh
Tcuh
Tces
Tcus
Tclrd
2.0 V
0.8 V
CE1, CE2
CE3, C34
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
2000 Infineon Technologies Corp. • Optoelectronics Division • San Jose, CA DLR/DLO/DLG3416
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, 2000-01
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/DLG3416
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, 2000-01
Table 1. Typical Loading Data State Table
X=don’t care
Table 2. Loading Cursor State Table
X=don’t care
■
= all dots on
Control Address Data Display Digit
BL CE1 CE2 CE3 CE4 CUE CU WR CLR A1A0D6D5D4D3D2D1D03210
H X X X X L X H H previously loaded display G R E Y
H L X X X L X X H XXXXXXXXXGREY
H X L X X L X X H XXXXXXXXXGREY
H X X H X L X X H XXXXXXXXXGREY
H X X X H L X X H XXXXXXXXXGREY
H X X X X L X H H XXXXXXXXXGREY
HHHL L L HL H LLHLLLHLHGREE
HHHL L L HL H LHHLHLHLHGRUE
HHHL L L HL H HLHLLHHLLGLUE
HHHL L L HL H HHLLLLLHLBLUE
L X X X X X X H H X X L blank display
HHHL L L HL H HHLLLLHHHGLUE
H X X X X L X X L clears character display —
HHHL L L HL H XX—see character code see character set
Control Address Data Digit
BL CE1 CE2 CE
3
CE
4
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 L LXXXXXXHBEA
■
H H H L L H L L H L HXXXXXXHBE
■■
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 HLHLLLHLL
■
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 X H H display stored cursors B E
■■
2000 Infineon Technologies Corp. • Optoelectronics Division • San Jose, CA DLR/DLO/DLG3416
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, 2000-01
Loading Data
Setting the chip enable (CE1, CE2, CE3, CE4) to their true state
will enable 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
, CE3, CE4) 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 loca-
tion 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
erroneous 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
Blank the display 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 display can be achieved by
pulsing (BL). A flashing circuit can be constructed using a 555 a
stable multivibrator. Figure 4 illustrates a circuit in which vary-
ing R2 (100K~10K) will have a flash rate of 1.0 Hz~10 Hz.
The display can be dimmed by pulsing (BL) line at a frequency
sufficiently fast to not interfere with the internal clock. The dim-
ming 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 DLX3416 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. Flashing Circuit Using a 555 and Flashing
(Blanking) Timing
Figure 5. Dimming Circuit Using a 556
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
~
~
~
~
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
1
0
200 µs Blanking Pulse Width
4 µs min., 196 µs max.
5 KHz Blanking Frequency
~
~
~
~
2000 Infineon Technologies Corp. • Optoelectronics Division • San Jose, CA DLR/DLO/DLG3416
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, 2000-01
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
A3
A2
D0-DL
+V
GND
BL D15 D12 D11 D8 D7 D4 D3 D0
CLR
WR
CU
CUE
A1
A0
7
14
GND
GND
GND
+V
+V
+V
+V
GND
CE1
CE2
CE3
CE4
CE1
CE2
CE3
CE4
CE1
CE2
CE3
CE4
CE1
CE2
CE3
CE4
2000 Infineon Technologies Corp. • Optoelectronics Division • San Jose, CA DLR/DLO/DLG3416
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, 2000-01
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 DLX3416 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 DLX3416 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 pack-
age. Maximum exposure should not exceed two minutes at
elevated temperatures. Acceptable solvents are TF (tri-
chorotribluorethane), 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
chloride, 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, Morristown, NJ; Baron-Blakeslee, Chi-
cago, IL; Dow Chemical, Midland, MI; E.I. DuPont de Nem-
ours & 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.infineon.com/
opto.
Optical Considerations
The 0.270" high characters of the DLX3416 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 DLR3416 is a standard red display and should be matched
with long wavelength pass filter in the 600 nm to 620 nm range.
The DLO3416 is a high efficiency red display and should be
matched with a long wavelength pass filter in the 470 nm to 590
range. The DLG3416 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.
