2?12 red slr2016 high efficiency red slo2016 green slg2016 yellow sly2016 x/y stackable.180 4-character 5x7 dot matrix alphanumeric intelligentdisplay with memory/decoder/driver features very close multi-line spacing, 0.4" centers 0.180" 5x7 dot matrix characters 128 special ascii characters for english, ger- man, italian, swedish, danish, and norwegian languages wide viewing angle: x axis 50 maximum, y axis 75 maximum 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 clear function that clears character memory true blanking for intensity dimming applica- tions end-stackable, 4-character package intensity coded for display uniformity extended operating temperature range: ?0 c to +85 c superior esd immunity 100% burned-in and tested wave solderable ttl compatible over operating temperature range description the slr/slo/slg/sly2016 is a four digit 5x7 dot matrix display mod- ule with a built-in cmos integrated circuit. this display is x/y stack- able. the integrated circuit contains memory, a 128 ascii rom decoder, multiplexing circuitry and drivers. data entry is asynchronous. a dis- play system can be built using any number of slr/slo/slg/sly2016 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. two address bits (a0, a1) are normally connected to the like-named inputs of all displays in the system. data lines are connected to all slr/slo/slg/sly2016s directly and in parallel as is the write line (wr ). the display will then behave as a write-only memory. the slr/slo/slg/sly2016 has several features superior to competi- tive devices. 100% burn-in processing insures that the slr/slo/slg/ sly2016 will function in more stressful assembly and use environ- ments. true ?lanking?allows the designer to dim the display for more ?xibility of display presentation. finally the clr clear function will clear the ascii character ram. ?ontinued see appnotes 18, 19, 22, and 23 for additional information. 0.100 (2.54) 0.197 ( 3 pl.) (5.00) 0.400 .015 (10.16 .38) 0.018 (.46) 0 .180 ( 4.57) 0.784 (19.91) eia date code luminous intensity code p in 1 i ndicator .100 (2.54) non-cumulative (12 pl.) 0.200 (5.08) part number xxyy slx2016 siemens z 0.150 (3.81) 0.012 (.3) .002 (.05) 0.300 .02 0 (7.62 .51) 0.160 .020 (4.06 .51) tolerance: .010 (.25 ) package dimensions in inches (mm)
2?13 slr/slo/slg/sly2016 description (continued ) the character set consists of 128 special ascii characters for english, german, italian, swedish, danish, and norwe- gian. all products are 100% burned-in and tested, then subjected to out-going aql s of .25% for brightness matching, visual alignment and dimensions, .065% for electrical and func- tional. maximum ratings dc supply voltage ....................................?.5 v to +7.0 vdc input voltage, respect to gnd (all inputs) ...................................... ?.5 v to v cc +0.5 vdc operating temperature ................................. ?0 c to +85 c storage temperature ................................... ?0 c to +100 c relative humidity at 85 c................................................ 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 ..................................................................635 nm typ. green ...............................................................565 nm typ. yellow ...............................................................585 nm typ. digit height.................................................. 0.180" (4.57 mm) time averaged luminous intensity (1) at v cc =5 v red............................................................ 50 m cd/led min. her/yellow ................................................ 60 m cd/led min. green ........................................................ 75 m cd/led min. led to led intensity matching, v cc =5 v ............1.8:1.0 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. dc characteristics at 25 c parameter min. typ. max. units condition v cc 4.5 5.0 5.5 v i cc blank 2.3 3.0 ma v cc =5.0 v i cc (80 dots on) 80 105 ma v cc =5.0 v v il (all inputs) 0.8 v 4.5 v 2?14 slr/slo/slg/sly2016 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 loading data the desired data code (d0?6) and digit address (a0, a1) must be held stable during the write cycle for storing new data. data entry may be asynchronous. digit 0 is de?ed as right hand digit with a1=a2=0.` clearing the entire internal four-digit memory can be accom- plished by holding the clear (clr ) low for 1 msec minimum. the clear function will clear the ascii ram. loading an ille- gal data code will display a blank. typical loading state table figure 3. flashing circuit using a 555 parameter symbol ?0 c +25 c +85 c unit address set up time t as 10 10 10 ns write time t w 60 70 90 ns data set up time t ds 20 30 50 ns address hold time t ah 20 30 40 ns data hold time t dh 20 30 40 ns access time t acc (1) 90 110 140 ns clear disable time t clrd 111 m s clear time t clr 111ms wr a1 a0 d6 d5 d4 d3 d2 d1 d0 digit 3210 h previously loaded display g r e y l llhlllhlhgree l l hhl hl hl hgrue l hlhllhhllglue l hhhllllhlblue l lhhlllhlhblee l l l hl hl hhhblew l x x see character code see char. set 555 timer r1 4.7 k w r2 100 k w c4 0.01 m f c3 10 m f v cc =5.0 v to bl pin on display 1 2 3 4 8 7 6 5 figure 3a. flashing (blanking) timing 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 data mem- ory. a ?shing circuit can easily be constructed using a 555 astable multivibrator. figure 3 illustrates a circuit in which varying r1 (100k~10k) will have a ?sh rate of 1 hz~10 hz. the display can be dimmed by pulse width modulating the (bl ) at a frequency suf?iently 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 con- sumption. an example of a simple dimming circuit using a 556 is illus- trated in figure 4. adjusting potentiometer r3 will dim the dis- play by changing the blanking pulse duty cycle. figure 4. dimming circuit using a 556 figure 4a. dimming (blanking) timing blanking pulse widt h 50% duty factor 500 ms 2 hz blanking frequency 1 0 ~ ~ ~ ~ c3 1000 p f 1 2 3 4 5 6 7 14 13 12 11 10 9 8 556 dual timer r2 47 k w r1 200 w c1 4 700 pf c4 0.01 m f r3 500 k w v cc =5.0 v dimming (blanking) control c2 0.01 m f to bl pin on display 1 0 200 m s blanking pulse width 4 m s min., 196 m s ma x. 5 khz blanking frequency ~ ~ ~ ~
2?15 slr/slo/slg/sly2016 character set figure 5. block diagram 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 1 . high=1 level. 2. low=0 level. 3. upon power up, device will initialize in a r andom state . 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 128 x 7 bit ascii character decode (4.48k bits) bl clr osc 128 counter 7 counter display output logic latches column decoder wr a0 a1 write address decoder 4 x 7 bit columns 0 to 19 address bus ? ?
2?16 slr/slo/slg/sly2016 design considerations for details on design and applications of the slx2016 in multiple display systems, refer to appnote 15 in the current siemens optoelectronics data book. electrical & mechanical considerations voltage transient supression 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 capacitors close to the displays across v cc and gnd, one for each display, and one 10 m f capacitor for every sec- ond display. esd protection the cmos ic of the slx2016 is resistant to esd damage and capable of withstanding discharges less than 2 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 slx2016 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 ?x (except carboxylic acid) or resin- based rma ?x 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 temperatures above 260 c for ?e 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 saponi?rs 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 pack- age. maximum exposure should not exceed two minutes at elevated temperatures. acceptable solvents are tf (tri- chorotri?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 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. 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 .300" wide with .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., french- town, nj; garry manufacturing, new brunswick, nj; robin- son-nugent, new albany, in; and samtec electronic hardware, new albany, in. for further information refer to siemens appnote 22. optical considerations the .180" high characters of the slx2016 gives readability up to eight feet. proper ?ter 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/ bene? ratio for ?ters. incandescent (with almost no green) or ?orescent (with almost no red) lights do not have the ?t spectral response of sunlight. plastic band-pass ?ters are an inexpensive and effective way to strengthen contrast ratios.the slr2016 is a standard red display and should be matched with long wave- length pass ?ter in the 600 nm to 620 nm range. the slo2016 is a high ef?iency red display and should be matched with a long wavelength pass ?ter in the 470 nm to 590 range. the slg/sly2016 should be matched with a yel- low-green band-pass ?ter that peaks at 565 nm. for displays of multiple colors, neutral density gray ?ters offer the best compromise. additional contrast enhancement is gained by shading the displays. plastic band-pass ?ters with built-in louvers offer the next step up in contrast improvement. plastic ?ters can be improved further with anti-re?ctive coatings to reduce glare. the trade-off is fuzzy characters. mounting the ?ters close to the display reduces this effect. take care not to over- heat the plastic ?ter by allowing for proper air ?w. optimal ?ter enhancements are gained by using circular polarized, anti-re?ctive, band-pass ?ters. circular polariz- ing further enhances contrast by reducing the light that trav- els through the ?ter and relfects back off the display to less than 1%. several ?ter manufacturers supply quality ?ter materials. some of them are: panelgraphic corporation, w. caldwell, nj; sgl homalite, wilmington, de; 3m company, visual products division, st. paul, mn; polaroid corporation, polar- izer division, cambridge, ma; marks polarized corporation, deer park, ny, hoya optics, inc., fremont, ca. one last note on mounting ?ters: recessing displays and bezel assemblies is an inexpensive way to provide a shading effect in overhead lighting situations. several bezel manufac- turers are: r.m.f. products, batavia, il; nobex components, grif?h plastic corp., burlingame, ca; photo chemical prod- ucts of california, santa monica, ca; i.e.e.-atlas, van nuys, ca. refer to siemens appnote 23 for further information.
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