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DLR2416 HIGH EFFICIENCY RED DLO2416 GREEN DLG2416
RED .200" 4-Character 5x7 Dot Matrix Alphanumeric IntelligentDisplay(R) with Memory/Decoder/Driver
Package Dimensions in inches (mm)
.031 (.79) .250 (6.35) .136 (3.45) .260 (6.60) ref.
.031 (.79) .198 (5.03) .1.00 max. (25.4) .Pin 1 Indicator Part No. EIA Date Code .050 4 pl. (1.27) .160 .020 (4.06 .51) .095 (2.41) ref.
DLX2416 SIEMENS YYWW Z
.800 (20.32) max.
.600.020 (15.24 .51)
.012 (.30) .002 (.05) 18 pl. .070 (1.78) .003 (.08) .010 (.25) 8 pl. .260 (6.60)
FEATURES * Dot Matrix Replacement for DL2416T * 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 25C * 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: -40C to +85C * Superior ESD Immunity * Wave Solderable * TTL Compatible over Operating Temperature Range * Interdigit Blanking
Luminous Intensity Code .100 16 pl. .018 (2.54) at Seating Plane (.46) .002 (.05) 18 pl.
TOLERANCE: XXX .01 (.25)
DESCRIPTION The DLR/DLO/DLG2416 is a four digit 5x7 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, multiplexing 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 without 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 flexibility of display presentation. Finally the CLR clear function will clear the cursor RAM and the ASCII character RAM simultaneously. 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.
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Maximum Ratings DC Supply Voltage ........................................-0.5 V to +7.0 Vdc Input Voltage, Respect to GND (all inputs) .......................................... -0.5 V to VCC +0.5 Vdc Operating Temperature ..................................... -40C to +85C Storage Temperature ....................................... -40C to +100C Relative Humidity at 85C.................................................... 85% Maximum Solder Temperature, 0.063" (1.59 mm) below Seating Plane, t<5 sec ...................................... 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(1) at VCC=5 V Red................................................................ 60 cd/LED typ. HER ............................................................. 100 cd/LED typ. Green .......................................................... 120 cd/LED typ. LED to LED Intensity Matching at VCC=5 V .............1.8:1.0 max. LED to LED Hue Matching (Green only) at VCC=5 V ........................................................... 2 nm max. Viewing Angle (off normal axis) Horizontal ............................................................... 50 max. Vertical . ................................................................. 75 max.
Note 1: Peak luminous intensity values can be calculated by multiplying these values by 7.
Pins and Functions Pin 1 2 3 4 5 6 7 8 9 Function CE1 Chip Enable CE2 Chip Enable CLR Clear CUE Cursor Enable CU Cursor Select WR Write A1 Digit Select A0 Digit Select VCC Pin 10 11 12 13 14 15 16 17 18 Function GND D0 Data Input D1 Data Input D2 Data Input D3 Data Input D6 Data Input D5 Data Input D4 Data Input BL Display Blank
Figure 2. Timing characteristics --Write Cycle waveforms
CE1, CE2 CU, CLR 2.0 V 0.8 V
TCES TCUS TCLRD
A0, A1
TCEH TCUH
2.0 V 0.8 V
TAS
TAH
2.0 V 0.8 V
Figure 1. Top View
18 17 16 15 14 13 12 11 10
D0-D6
TDS
WR
TDH
2.0 V 0.8 V
digit 3 digit 2 digit 1 digit 0
TW TACC
1
2
3
4
5
6
7
8
9
Note: These waveforms are not edge triggered.
DC Characteristics -40C Parameter Min. ICC 80 dots on ICC Cursor all dots at 50% ICC Blank IIL (all inputs) VIH (all inputs) VIL (all inputs) VCC 4.5 5.0 30 2.0 0.8 5.5 4.5 5.0 2.8 60 Typ. 135 Max. 160 135 4.0 120 25 2.0 0.8 5.5 4.5 5.0 2.3 50 Min. Typ. 110 Max. 130 100 3.0 100 20 2.0 0.8 5.5 2.0 40 Min. Typ. 95 Max. 115 100 2.5 80 mA mA mA A V V V VCC=5 V VCC=5 V VCC=5 V, BL=0.8 V VIN=0.8 V, VCC=5 V VCC=5 V 0.5 V VCC=5 V 0.5 V +25C +85C Units Condition
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DLR/DLO/DLG2416
AC Characteristics Guaranteed Minimum Timing, Parameters at VCC=5.0 V 0.5 V Parameter Chip Enable Set Up Time Address Set Up Time Cursor Set Up Time Chip Enable Hold Time Address Hold Time Cursor Hold Time Clear Disable Time Write Time Data Set Up Time Data Hold Time Clear Time Access Time Loading Data Table
Control BL H H H H H H H L H H H CE1 X H X L L L L X L X L CE2 X X H L L L L X L X L CUE L L L L L L L X L L L CU X X X H H H H X H X H WR H X X L L L L H L H L CLR H H H H H H H H H L L Address A1 X X L L H H X H X X A0 X X L H L H X H X X D6 X X H H H H H D5 X X L L L L L D4 X X L H L L L Data D3 X X L L H L L D2 X X H H H L H D1 X X L L L H H D0 X X H H L L H 3 G G G G G G B G Display Digit 2 R R R R R L L L 1 E E E E U U U U 0 Y Y Y E E E E E
Symbol TCES TAS TCUS TCEH TAH TCUH TCLRD TW TDS TDH TCLR TACC
-40C 0 10 10 0 20 20 1 60 20 20 1 90
+25C 0 10 10 0 30 30 1 70 30 30 1 110
+85C 0 10 10 0 40 40 1 90 50 40 1 140
Unit ns ns ns ns ns ns s ns ns ns s ns
Note: TACC=Set Up Time + Write Time + Hold Time.
previously loaded display
blank display clears character displays see character code see character set
X=don't care
Loading Cursor Table
Digit BL H H H H H H H H H H CE1 X X H H H H H X H X CE2 X X H H H H H X H X CE3 X X L L L L L X L X CE4 X X L L L L L X L X CUE L H H H H H H L L H CU X X L L L L L X L H WR H H L L L L L H L X CLR H H H H H H H H H H A1 A0 D6 D5 D4 D3 D2 D1 D0 3 B B X X X X X X X X X X X X H H H H L L B B B s s B X X B B X X X X X 2 E E E E s s E E E E 1 A A A s s s s A A s 0 R R s s s s s R R s
previously loaded display display previously stored cursors L L H H H H L H L H L H X X X X X X X X X X X X X X X X X
disable cursor display display stored cursors
X=don't care s= all dots on
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DLR/DLO/DLG2416
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 s. All illuminated dots will be turned off within one complete display multiplex cycle, 1 msec minimum. The clear function will clear both the ASCII RAM and the cursor RAM. 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 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 cursor(s) or the characters will appear. CUE does not affect the contents of cursor memory. 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 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 cursor(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 astable multivibrator. Figure 3 illustrates a circuit in which varying R2 (100K~10K) will have a flash rate of 1 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 illustrated in Figure 4. Adjusting potentiometer R3 will dim the display by changing the blanking pulse duty cycle.
Figure 3. DLX2416--Flashing circuit using a 555 and Flashing (Blanking) timing
VCC=5.0 V
1 2 3 To BL Pin on Display 4 555 Timer
8 7 6 5 C4 0.01 F
R1 4.7 K
R2 100 K C3 10 F
1 0 Blanking Pulse Width 50% Duty Factor ~ 500 ms ~ ~ 2 Hz Blanking Frequency ~
Figure 4. DLX2416Dimming circuit using a 556 and Dimming (Blanking) timing
VCC=5.0 V R2 47 K R1 200 C2 0.01 F 1 2 3 4 5 C1 4700 pF 6 7 556 Dual Timer Dimming (Blanking) Control 14 13 12 11 10 9 8 To BL Pin on Display C4 0.01 F C3 1000 pF R3 500 K
1 0 ~ 200 s ~ ~ 5 KHz Blanking Frequency ~ Blanking Pulse Width 4 s min., 196 s max.
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DLR/DLO/DLG2416
Figure 5. Internal block diagram
Display Rows 0 to 6 3 Row Control Logic & Row Drivers 2 1 0 Columns 0 to 19 BL
OSC
/ 128 Counter
/7 Counter
Timing and Control Logic
RAM Read Logic D6 D5 D4 D3 D2 D1 D0 Column Decoder
Row Decoder Latches 7 Bit ASCII Code ROM
128 X 35 Bit ASCII Character Decode 4480 bits
Column Data
RAM Memory
4 X 7 bit Address Lines
Column Enable Latches and Column Drivers
Cursor Memory 4 X 1 bit
Cursor Memory Bits 0 to 3
WR A0 A1
Write Address Decoder
CUE
Figure 6. Typica schematic--16-character system
+5 GND D15 BL D0-D6 7 CLR WR CU CUE 2 A 0 A1 14 D12 D11 D8 D7 D4 D3 D0
CE2 CE1
CE2 CE2 CE1 CE1
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DLR/DLO/DLG2416
Design Considerations For details on design and applications of the DLX2416 using standard bus configurations in multiple display systems, or parallel 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 in the current Siemens Optoelectronics Data Book. 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 VCC. Additionally, the LEDs may cause transients in the power supply line while they change display 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 silicon gate CMOS IC of the DLX2416 is quite resistant to ESD damage and capable of withstanding discharges greater than 2 KV. However, 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. 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 260C. Wave soldering is also possible following these conditions: Preheat that does not exceed 93C on the solder side of the PC board or a package surface temperature of 85C. Water soluble organic acid flux (except carboxylic acid) or resin-based RMA flux without alcohol can be used. Wave temperature of 245C 5C with a dwell between 1.5 sec. to 3.0 sec. Exposure to the wave should not exceed temperatures above 260C 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 (60C) for less than 15 minutes. Addition of mild saponifiers is acceptable. 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 elevated temperatures. Acceptable solvents are TF (trichorotribluorethane), 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.
For further information refer to Siemens Appnotes 18 and 19. 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 assemblies are best handled by longer SIP sockets or DIP sockets when available for uniform package alignment. Socket manufacturers are Aries Electronics, Inc., Frenchtown, NJ; Garry Manufacturing, New Brunswich, NJ; Robinson-Nugent, New Albany, IN; and Samtec Electronic Hardware, New Albany, IN. For further information refer to Siemens Appnote 22. 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 different characters. The only limitation is cost. Take into consideration 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 effective 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 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 displays. 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 polarized, anti-reflective, band-pass filters. Circular polarizing further enhances contrast by reducing the light that travels through the filter and relfects 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 Plastic Corp., Burlingame, CA; Photo Chemical Products of California, Santa Monica, CA; .E.E.-Atlas, Van Nuys, CA. Refer to Siemens Appnote 23 for further information.
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DLR/DLO/DLG2416
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 Corportation, Specialty Chemical Division, Morristown, NJ; Baron-Blakeslee, Chicago, IL; Dow Chemical, Midland, MI; E.I. DuPont de Nemours & Co., Wilmington, DE.
Character Set
D0 D1 D2 D3 D6 D5 D4 HEX ASCII CODE 0 0 0 0 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
1
1
0
1
0
2
0
1
1
3
1
0
0
4
1
0
1
5
1
1
0
6
1
1
1
7
1. High=1 level. 2. Low=0 level. 3. Upon power up, device will initialize in a random state.
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DLR/DLO/DLG2416

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