DLR3416 HIGH EFFICIENCY RED DLO3416 GREEN DLG3416 RED .270" 4-character 5 x 7 Dot Matrix Alphanumeric Intelligent Display with Memory/Decoder/Drive Dimensions in inches (mm) .157 (.40) ±.007 (.18) .175 (4.45) .325 (8.26) .260 (6.60) ±.007 (.18) .790 (20.07) ±.010 (.25) .270 (6.86) .600 (15.24) ±.020 (.51) at Seating Plane 1.300 (33.02) max Pin 1 Indicator Luminous Intensity Code EIA Date Code DLX3416 SIEMENS Z YYWW Part No. FEATURES • Dot Matrix Replacement for DL3416 • 0.270" 5x7 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 Volt Power, VIH=2.0 V, VIL=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 for additional information. .145 (3.68) ±.015 (.38) at Seating Plane 340 (8.64) .160 (4.06) ±.020 (.51) .100 (2.54) ±.015 (38) at Seating Plane .020 (.51) x .012(.30) Leads 22 pl. DESCRIPTION The DLR/DLO/DLG3416 is a four character 5x7 dot matrix display module with a built-in CMOS integrated circuit. This display is a “drop-in” replacement for the DL3416. 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 DLX3416s since each character 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 four chip enables, four displays (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 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. 2–1 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 .................. -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 sec ............................. 260 °C Figure 1. Top view 22 21 20 1918 17 16 15 14 13 12 digit 3 digit 2 digit 1 digit 0 1 2 3 4 5 6 7 8 9 10 11 Optical Characteristics Spectral Peak Wavelength Red .................................................. 660 nm typ. HER .................................................. 630 nm typ. Green ............................................... 565 nm typ. Character Height0.270" (6.86 mm) Time Averaged Luminous Intensity(1) at VCC=5 V Red ............................................ 60 µcd/LED typ. HER.......................................... 120 µcd/LED typ. Green ....................................... 140 µcd/LED typ. Dot to Dot 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. 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 VCC 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 Figure 2. Timing characteristics, Write Cycle waveforms CE1, CE2 CE3, C34 CU, CLR Note 1: Peak luminous intensity values can be calculated by multiplying these values by 7. Tces Tcus Tclrd 2.0 V 0.8 V Tceh Tcuh 2.0 V 0.8 V A0, A1 Tah Tas 2.0 V 0.8 V D0-D6 Tdh Tds WR 2.0 V 0.8 V TW Tacc Note: These waveforms are not edge triggered. DC Characteristics –40°C Parameter Min. ICC 80 dots on Typ. Max. 150 190 ICC Cursor Min. IIL (all inputs) 30 VIH (all inputs) 2.0 2.8 4.0 60 120 Max. 135 165 25 2.3 3.0 50 100 5.5 Units Conditions 150 mA VCC=5 V 125 mA VCC=5 V 2.0 2.5 mA VCC=5 V, BL=0.8 V 40 80 µA VIN=0.8 V, VCC=5 V V VCC=5 V 0.8 V VCC=5 V 5.5 V Typ. Max. 118 20 2.0 0.8 5.0 Min. 140 2.0 VIL (all inputs) 4.5 +55°C Typ. 170 ICC Blank VCC +25°C 0.8 4.5 5.0 5.5 4.5 5.0 DLR/DLO/DLG3416 2–2 Data entry may be asynchronous and random. Digit 0 is defined as right hand digit with A1=A2=0. AC Characteristics Guaranteed Minimum Timing Parameters at VCC=5.0 V ± 0.5 V Parameter Symbol –40°C +25°C +85°C Units Chip Enable Set Up Time TCES 0 0 0 ns Address Set Up Time TAS 10 10 10 ns Cursor Set Up Time TCUS 10 10 10 ns Chip Enable Hold Time TCEH 0 0 0 ns Address Hold Time TAH 20 30 40 ns Loading Cursor Cursor Hold Time TCUH 20 30 40 ns Clear Disable Time TCLRD 1 1 1 µs Write Time TW 60 70 90 ns Data Set Up Time TDS 20 30 50 ns Data Hold Time TDH 20 30 40 ns Clear Time TCLR 1 1 1 µs 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 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. Access Time TACC 90 110 140 ns To clear the entire internal four-digit memory hold the clear (CLR) low for 1 µs. 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. 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. Note: 1. TACC=Set Up Time + Write Time + Hold Time. 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. Typical Loading Data State Table BL CE1 CE2 CE3 CE4 CUE CU WR CLR H H H H H H H H H H L H H H X L X X X X H H H H X H X H X X L X X X H H H H X H X H X X X H X X L L L L X L X L X X X X H X L L L L X L X L L L L L L L L L L L X L L L X X X X X X H H H H X H X H H X X X X H L L L L H L X L H H H H H H H H H H H H L H A1 A0 D6 D5 D4 D3 D2 D1 X X X X X L L H H X H X X X X X L H L H X H X X previously loaded display X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X H L L L H L H L H L H L H L L H H L L L L L L H L blank display L L L L H H clears character display see character code A1 A0 D6 D0 Digit X X X X X H H L L 3 G G G G G G G G G B 2 R R R R R R R R L L 1 E E E E E E E U U U 0 Y Y Y Y Y Y E E E E H G L U E see character set X=don’t care Loading Cursor State Table BL CE1 CE2 CE3 CE4 CUE CU WR CLR H H H H H H H H H H X X H H H H H X H X X X H H H H H X H X X X L L L L L X L X X X L L L L L X L X L H H H H H H L L H X X L L L L L X L X H H L L L L L H L H H H H H H H H H H H D5 D4 D3 D2 previously loaded display display previously stored cursors L X X X X X H X X X X X L X X X X X H X X X X X L H L L L H disable cursor display H X X X X X display stored cursors L L H H H H D1 D0 X X X X L H H H H L X L Digit 3 B B B B B ■ ■ B B B 2 E E E E ■ ■ E E E E 1 A A A ■ ■ ■ ■ A A ■ 0 R R ■ ■ ■ ■ ■ R R ■ X=don’t care ■=all dots on DLR/DLO/DLG3416 2–3 The display can be dimmed by pulsing (BL) line 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. 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 3 illustrates a circuit in which varying R2 (100K~10K) will have a flash rate of 1 Hz~10 Hz. 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 4. Flashing circuit using a 555 VCC=5.0 V Figure 3. Flashing circuit using a 555 VCC=5.0 V 8 1 To BL Pin on Display 1 8 2 7 555 Timer 3 6 4 5 R1 4.7 KΩ 2 R2 100 KΩ To BL Pin on Display C3 10 µF 555 Timer R1 4.7 KΩ 7 3 6 4 5 R2 100 KΩ C3 10 µF C4 0.01 µF C4 0.01 µF Figure 4a. Flashing (blanking) timing Figure 3a. Flashing (blanking) timing 1 1 0 Blanking Pulse Width ≈50% Duty Factor 0 Blanking Pulse Width ≈50% Duty Factor ~ ~ 500 ms ~ ~ 2 Hz Blanking Frequency ~ ~ 500 ms ~ 2 Hz Blanking Frequency ~ Figure 5. Internal block diagram Display Rows 0 to 6 3 2 1 0 Row Control Logic & Row Drivers OSC ÷ 128 Counter Timing and Control Logic ÷7 Counter Row Decoder RAM Memory 4 X 7 bit Cursor Memory 4 X 1 bit Latches 7 Bit ASCII Code Column Decoder RAM Read Logic D6 D5 D4 D3 D2 D1 D0 BL Columns 0 to 19 ROM 128 X 35 Bit ASCII Character Decode 4480 bits Column Data Column Enable Latches and Column Drivers Address Lines Cursor Memory Bits 0 to 3 WR A0 A1 Write Address Decoder CUE DLR/DLO/DLG3416 2–4 Character Set D0 D1 D2 D3 D6 D5 D4 HEX ASCII CODE 0 0 0 0 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 0 0 0 0 0 0 1 0 0 2 1 0 0 0 1 1 0 1 0 5 0 0 1 0 4 1 1 0 0 3 0 0 0 1 8 1 1 1 0 7 0 1 1 0 6 0 1 0 1 A 1 0 0 1 9 1 1 0 1 B 1 0 1 1 D 0 0 1 1 C 0 1 1 1 E 1 1 1 1 F 1. High=1 level. 2. Low=0 level. 3. Upon power up, device will initialize in a random state. Figure 6. Typical schematic, 16-character system +V GND CE4 CE3 CE2 D0 CE1 CE4 CE3 D4 D3 CE2 CE1 CE4 CE1 +V CE3 CE4 D8 D7 CE2 CE3 GND 7 GND CLR CE1 D0-DL D12 D11 CE2 D15 BL 14 +V +V GND CUE +V CU GND WR A1 A0 A3 A2 DLR/DLO/DLG3416 2–5 Chemical, Midland, MI; E.I. DuPont de Nemours & Co., Wilmington, DE. Design Considerations For details on design and applications of the DLX3416 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. 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. 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. For further information refer to Siemens Appnote 22. Optical Considerations The 0.270" high characters of the DLX3416 gives readability up to eight feet. Proper filter selection enhances readability over this distance. ESD Protection The silicon gate CMOS IC of the DLX3416 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. 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. Soldering Considerations 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. 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 DLX3416 can be hand soldered with SN63 solder using a grounded iron set to 260°C. Wave soldering is also possible following these conditions: 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 resin-based RMA flux without alcohol can be used. 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. 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 temperatures 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 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%. The least offensive cleaning solution is hot D.I. water (60°C) 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. 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. Note: Acceptable commercial solvents are: Basic TF, Arklone, P. Genesolv, D. Genesolv DA, Blaco-Tron TF, Blaco-Tron TA, and Freon TA. 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. 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 Refer to Siemens Appnote 23 for further information. DLR/DLO/DLG3416 2–6