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? 2000 in?eon technologies corp. ?optoelectronics division ?san jose, ca www.in?eon.com/opto ?1-888-in?eon (1-888-463-4636) yellow SCDQ5541p/q/r high efficiency red scdq5542p/q/r green scdq5543p/q/r high efficiency green scdq5544p/q/r square 0.134" 4-character 5x5 dot matrix serial input dot addressable intelligent display devices typical package outline & matrix scdq554xp sip package scdq554xq 90 sip package scdq554xr 90 connector/header package 0.112 (2.83) 0.400 (10.16) 0.200 (5.08) 0.784 (19.91) 0.134 (3.40) 0.187 (4.75) 0.134 (3.40) 0.235 (5.96) .010 ( .25) 0.475 (12.07) max. .445 ( 11.30) typ. 0.079 (2.00) .010 ( .25) 0.235 (5.96) .015 ( .38) 0.050 (1.27) 0.160 (4.06) 0.365 (9.27) max. 0.345 (8.76) typ. 0.393 (9.98) .015 ( .40) .012 x .018 (.30 x .46) .002 ( .05) pin .012 x .018 (.30 x .46) .002 ( .05) pin 0.079 (2.00) .010 ( .25) tolerance-non cum. 0.200 (5.08) 0.065 (1.65) .015 ( .38) 1.par t marking is on this side of the display . 2.mole x header, 53290-0510 mounted on the display . 3.mole x receptacle, 52418-0510 mounted on the customer's pcb. supplied by the customer. use pin 1 designation on this drawing, not the molex connector specification. 4.unless otherwise specified all tolerances are .010 ( .25) pin 1 pin 1 pin 1 1 1 3 0.157 (4.00) 2 1 1 1 1
? 2000 in?eon technologies corp. ?optoelectronics division ?san jose, ca SCDQ5541/5542/5543/5544/p/q/r www.in?eon.com/opto ?1-888-in?eon (1-888-463-4636) features four 0.134" (3.40 mm) 5x5 dot matrix characters in yel- low, high ef?iency red, green, or high ef?iency green optimum display surface ef?iency (display area to package ratio) square character format to display data in a vertical or horizontal format high speed data input rate: 5.0 mhz romless serial input, dot addressable display ideal for user de?ed characters built-in decoders, multiplexers and led drivers readable from 6 feet (1.8 meters) wide viewing angle, ?5 in x-axis and y-axis attributes: ? 100 bit ram for user de?ed characters ? eight dimming levels ? power down model (<250 w) ? software clear function ?lamp test ? 3.3 v capability description the SCDQ5541x (yellow), scdq5542x (high ef?iency red), scdq5543x (green), and scdq5544x (high ef?iency green) are four digit, dot addressable 5x5 dot matrix, serial input, alphanumeric intelligent display devices in a square format. the four digits are packaged in a rugged, high quality, optically transparent, plastic package several mounting options. the sip pin for standard display mounting and 90 bend sip for side mounting. additionally, a connector/header con?uration is also available for display side mounting. the on-board cmos has a 100 bit ram, one bit associated with one led, each to generate user de?ed characters. in power down mode, quiescent current is <50 a. the scdq554xx is designed for work with the serial port of most common microprocessors. data is transferred into the display through the serial data input (data), clocked by the serial data clock (sdclk), and enabled by the load input (load). absolute maximum ratings operation in excess of any of these conditions may result in permanent damage to this device ( t a =25 c). supply voltage v cc to gnd (non-operating) ............ ?.5 to 7.0 v input voltage, any pin to gnd......................?.5 to v cc to 5.5 v operating temperature range .............................?0 c to 85 c storage temperature ( t s ) ...................................?0 c to 100 c relative humidity (non-condensing) .................................... 85 % maximum solder temperature, connector only 0.063?below seating plane t 5 s................................ 260 c maximum power dissipation .............................0.65 w at 85 c esd (100 pf, 1.5 k ? ) ........................................................ 2.0 kv maximum input current .............................................. 100 ma electrical characteristics (over operating temperature, un- less otherwise speci?d, t a =25 c) notes: 1) i cc is an average value, the peak current is 5 / 3 x i cc . 2) contact manufacturer for 3.3 volt operation. parameter min. typ. max. units conditions v cc 4.5 5.5 v i cc (pwr. dwn. mode) 5.0 a v cc =5.0 v, all inputs=0 v or v cc i cc (16 dots on per digit) (1) 100 145 ma v cc =5.0 v, ??displayed in all 4 digits at 100% brightness at 25 c v ih 3.5 v v cc =4.5 v to 5.5 v v il 1.5 v v cc =4.5 v to 5.5 v i ih 10 a v cc = v in= 5.0 v (all inputs) i il ?0 a v cc =5.0 v, v in =0 v (all inputs) internal mux frequency 375 768 1086 hz ja ?5 c/w input circuit the input resistor/diode network shown below is used for esd protection and to eliminate substrate latch-up caused by input voltage over/under shoot. figure 1. inputs v cc 1.0 k ? gnd input
? 2000 in neon technologies corp. optoelectronics division san jose, ca SCDQ5541/5542/5543/5544/p/q/r www.in neon.com/opto 1-888-in neon (1-888-463-4636) figure 2. close up of data ?rite cycle figure 3. device timing write cycle timing (over operating temperature range, v cc = v ll =4.5 v to 5.5 v) notes: 1. t wr =setup time + 8 clock times + hold times + time between writes. 2. data is shifted into the displays 8 bit shift register on the positive going edge of the sdclk. 3. shift register data is evaluated when load\ goes high. symbol description min. max. units t lds load setup time 50 ns t ds data setup time 50 ns t sdclk clock period 200 ns t sdcw (hi or low) clock width 70 ns t ldh load hold time 0 ns t dh data hold time 25 ns t wr total write time 2.25 s t bl time between writes 600 ns t rst reset active time 600 ns sdclk sdclk t sdcw t data load d0 ds t lds t t dh d7 ldh t load load data data sdclk sdclk d0 d1 d2 d3 d4 d5 d6 d7 d0 d1 d2 d3 d4 d5 d6 d7 d0 d0 bl t wr t or
? 2000 in neon technologies corp. optoelectronics division san jose, ca SCDQ5541/5542/5543/5544/p/q/r www.in neon.com/opto 1-888-in neon (1-888-463-4636) optical characteristics at 25 c ( v cc =5.0 v at 100% brightness level, viewing angle: x axis 55? y axis 65? yellow SCDQ5541x high ef?iency red scdq5542x green scdq5543x high ef?iency green scdq5544x notes: 1. dot to dot intensity matching at 100% brightness is 1.8:1. 2. displays are binned for hue at 2.0 nm intervals. 3. displays within a given intensity category have an intensity match- ing of 1.5:1 (max.). pinout and pin de?itions description symbol min. typ. units luminous intensity character average (# displayed all digits) i v 1.8 5.4 mcd peak wavelength peak 583 nm dominant wavelength dom 585 nm description symbol min. typ. units luminous intensity character average (# displayed all digits) i v 1.8 5.4 mcd peak wavelength peak 630 nm dominant wavelength dom 620 nm description symbol min. typ. units luminous intensity character average (# displayed all digits) i v 1.8 5.4 mcd peak wavelength peak 565 nm dominant wavelength dom 570 nm description symbol min. typ. units luminous intensity character average (# displayed all digits) i v 2.1 6.4 mcd peak wavelength peak 568 nm dominant wavelength dom 574 nm pin function de?itions 1 load low input enables data clocking into 8-bit serial shift register. when load goes high, the contents of 8- bit serial shift register will be decoded. 2 sdata serial data input 3 sdclk loads data into the 8-bit serial data register on a low to high transition 4 v cc power supply 5 gnd power supply ground
? 2000 in neon technologies corp. optoelectronics division san jose, ca SCDQ5541/5542/5543/5544/p/q/r www.in neon.com/opto 1-888-in neon (1-888-463-4636) figure 4. dot matrix format figure 5. character address, row, & column data map 1. viewed from the led side of the display with the display in a hori- zontal position. 2. the row address and column data are typical for all character positions. the led is on when the data bit = 1 and off when the data bit = 0. figure 6. suggested display mounting operation of the scdq554xx the scdq554xx display consists of a cmos ic containing control logic and drivers for four 5x5 characters. these compo- nents are assembled in a compact plastic package. individual led dot addressablity allows the user great freedom in creating special characters or mini-icons. the user de?able character set examples illustrate 200 different character and symbol possibilities. each example has the hexadecimal code required to display characters in a horizontal or vertical format. see figure 6., suggested display mounting for the display posi- tioning. generally, the contacts should be on the right side of the display for the vertical format and on the top of the display for the horizontal format. sip package 90?sip connector/header packages 0.031 (0.79) 0.031 (0.79) 0.134 (3.40) 0.134 (3.40) char 0 char 1 char 2 char 3 pins/connector located at the top of the display. col4(d4) col3(d3) col2(d2) col1(d1) col0(d0) rw0 rw1 rw2 rw3 rw4 pcb pins/connector located at the top of the display pins/connector located at the top of the display pcb pcb the serial data interface provides a highly ef?ient interconnec- tion between the display and the mother board. the scdq554xx requires only three input lines as compared to 15 for an equivalent four character parallel input part. the on-board cmos ic is the electronic heart of the display. the ic accepts decoded serial data, which is stored in the inter- nal ram. asynchronously the ram is read by the character multiplexer at a strobe rate that results in a ?cker free display. figure 7. shows the three functional areas of the ic. these include: the input serial data register and control logic, a 100 bits two port ram, and an internal multiplexer/display driver.
? 2000 in neon technologies corp. optoelectronics division san jose, ca SCDQ5541/5542/5543/5544/p/q/r www.in neon.com/opto 1-888-in neon (1-888-463-4636) figure 7. scdq block diagram the following explains how to format the serial data to be loaded into the display. the user supplies a string of bit mapped de coded characters. the contents of this string is shown in figure 8.a. figure 8.b shows that each character consists of six 8 bit word s. the ?st word encodes the display character location and the succeeding ?e bytes are row data. the row data represents the status (on, off) of individual column leds. figure 8.c shows that each 8 bit word is formatted to include a three bit operational code (opcode) de?ed by bits d7?5 and ?e bits (d4?0) representing column data, character address, or control word data. figure 8.d shows the sequence for loading the bytes of data. bringing the load line low enables the serial register to accept d ata. the shift action occurs on the low to high transition of the serial data clock (sdclk). the least signi?ant bit (d0) is loaded ?st. after eight clock pulses the load line is brought high. with this transition the opcode is decoded. the decoded opcode directs d4?0 to be latched in the character address register, stored in the ram as column data, or latched in the control word registe r. the control ic requires a minimum 600 ns delay between successive byte loads. figure 8. loading serial character data sd clk s d ata load counter chain & timing oscillator row decoder & driver 4 - 5x5 characters 20 20 column logic & driver display multiplexer 20 x 5 bit dual port ram lamptest brightness power down serial data register d7 d6 d5 opcode d4 d3 d2 d1 d0 d ata opcode decoder software clear character address register write character/row address decode column output control word register 5 5 3 3 character 0 character 1 character 2 character 3 load sdclk data tbl 600 ns min. tbl 600 ns min. character address d0 c4 d0 d1 d2 d3 d4 d5 d6 d7 tbl dd d1 c3 d2 c2 d3 c1 d4 c0 character address 0 row 0 column data row 1 column data row 2 column data row 3 column data row 4 column data d0 0 d1 0 d2 0 d3 0 d4 0 d5 1 d6 0 d7 1 a b b c c d d d5 0 d6 0 d7 0 opcode opcode column data
? 2000 in neon technologies corp. optoelectronics division san jose, ca SCDQ5541/5542/5543/5544/p/q/r www.in neon.com/opto 1-888-in neon (1-888-463-4636) the character address bits, d4?0 stored in the character address register and the column data instructions row address bits, d7?5, direct the column data bits, d4?0 to speci? ram location. see the instruction set table for address and data format. f ig- ure 9. shows the row address for the example character ??see figure 5., character address, row, & column data map for the dot positioning (display contacts are at the top of the display). column data is written and read asynchronously from the 200 bit ram. once loaded the internal oscillator and character multiple xer reads the data from the ram. these characters are row strobed with column data as shown in figure 10. the character strobe rate is determined by the internal ics?20 counter. instruction set row data is written to the character address contained in the character address register. figure 9. writing character ??example row and column locations for a character ? operation d 7 d 6 d 5 d 4 d 3 d 2 d 1 d 0 hex description control word 1 1 1 1 l t b r b r b r f0+x select control word plus operand see control word format power down mode 1 1 1 11111ff power down mode? % brightness sft clear 1 1 0 00000c0 software clear address 1 0 1 00000a0 select digit address 0 register 1 0 1 00001a1 select digit address 1 chr adrs 1 0 1 00010a2 select digit address 2 03 10100011a3 select digit address 3 column data 000d 4 d 3 d 2 d 1 d 0 00+x row 0 d4?0=column data 001d 4 d 3 d 2 d 1 d 0 20+x row 1 d4?0=column data 010d 4 d 3 d 2 d 1 d 0 40+x row 2 d4?0=column data 011d 4 d 3 d 2 d 1 d 0 60+x row 3 d4?0=column data 100d 4 d 3 d 2 d 1 d 0 80+x row 4 d4?0=column data op code d 7 d 6 d 5 column data d4 d3 d2 d1 d0 c0 c1 c2 c3 c4 hex row 0 0 0 0 1 1 1 1 0 1e row 1 0 0 1 1 0 0 0 1 31 row 2 0 1 0 1 0 0 0 1 51 row 3 0 1 1 1 0 0 0 1 71 row 4 1 0 0 1 1 1 1 0 9e off led on led row 0 row 1 row 2 row 3 row 4 0 1 2 3 4 columns previously ?n?led
? 2000 in neon technologies corp. optoelectronics division san jose, ca SCDQ5541/5542/5543/5544/p/q/r www.in neon.com/opto 1-888-in neon (1-888-463-4636) figure 10. row strobe example the user can activate four control functions. these include: led brightness level, lamp test, ic power down, or display clear. opcodes and ?e bit words are used to initiate these functions. the opcodes and control words for the character address and loading column data are shown in instruction set table. the user can select seven speci? led brightness levels. these brightness levels (in percentages of full brightness of the display) include: 100 % (f0hex), 53 % (f1hex), 40 % (f2hex), 27 % (f3hex), 20 % (f4hex), 13 % (f5hex), and 6.6 % (f6hex). the brightness levels are controlled by changing the duty factor of the row strobe pulse. display brightness the scdq554x offers a unique display power down feature which reduces i cc to less than 50 a. when ffhex is loaded the display is set to 0 % brightness and the internal multiplex clock is stopped. when in the power down mode data may still be written into the ram. the display is reactivated by loading a new rightness level control word into the display. power down the lamp test is enabled by loading f8hex into the serial shift register. this control word sets all of the leds to a 53 % bright- ness level. operation of the lamp test has no affect on the ram and is cleared by loading a brightness control word. op code d 7 d 6 d 5 control word d4 d3 d2 d1 d0 hex operation level 111 10000 f0 100 % 111 10001 f1 53 % 111 10010 f2 40 % 111 10011 f3 27 % 111 10100 f4 20 % 111 10101 f5 13 % 111 10110 f6 6.6 % op code d 7 d 6 d 5 control word d4 d3 d2 d1 d0 hex operation level 111 11111 ff 0 % brightness load row 0 row load column 0 column 1 column 2 column 3 column 4 row 0 row 1 row 2 row 3 row 4 row 0 row 1 row 2 row 3 row 4 row 0 row 1 row 2 row 3 row 4 row 0 row 1 row 2 row 3 row 4 column 0 column 1 column 2 column 3 column 4 column 0 column 1 column 2 column 3 column 4 column 0 column 1 column 2 column 3 column 4 load row 1 load row 2 load row 3 row 0 row 1 row 2 row 3 row 4 oad row 4 column 0 column 1 column 2 column 3 column 4 lamp test the software clear (c0hex) clears the address register and the ram. the display is blanked and the character address register will be set to character 0. the internal counter and the control word register are unaffected. the software clear will remain active until the next data input cycle is initiated . software clear electrical & mechanical considerations interconnect considerations optimum product performance can be had when the following electrical and mechanical recommendations are adopted. the scdq554xxs ic is constructed in a high speed cmos pro- cess, consequently high speed noise on the serial data, serial data clock, and load lines may cause incorrect data to be written into the serial shift register. adhere to trans- mission line termination procedures when using fast line driv- ers and long cables (>10 cm). good digital grounds (pin 1) and power supply decoupling (pin 2) will insure that i cc (<350 ma peak) switching currents do not generate localized ground bounce. therefore it is recom- mended that each display package use a 0.1 f and 20 f capacitor between v cc and ground. op code d 7 d 6 d 5 control word d4 d3 d2 d1 d0 hex operation level 1 1 1 1 0 b b b lamp test (off) 1 1 1 1 1 0 0 0 f8 lamp test (on) op code d 7 d 6 d 5 control word d4 d3 d2 d1 d0 hex operation level 1 1 0 0 0 0 0 0 c0 clear
? 2000 in neon technologies corp. optoelectronics division san jose, ca SCDQ5541/5542/5543/5544/p/q/r www.in neon.com/opto 1-888-in neon (1-888-463-4636) esd protection the input protection structure of the scdq554xx provides sig- ni?ant protection against esd damage. it is capable of with- standing discharges greater than 2.0 kv. take all the standard precautions, normal for cmos components. these include properly grounding personnel, tools, tables, and transport carri- ers that come in contact with unshielded parts. if these condi- tions are not, or cannot be met, keep the leads of the device shorted together or the parts in anti-static packaging. soldering considerations the scdq554xx 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 ?x (except carboxylic acid) or resin-based rma ?x without alcohol can be used. wave temperature of 245 c ? c with a dwell between 1.5 s to 3.0 s. exposure to the wave should not exceed tempera- tures above 260 c for ?e seconds at 0.063" below the seating plane. the packages should not be immersed in the wave. the scdq554xr connects to an external connector receptacle which may be soldered before inserting the scdq554xr dis- play. in this way, only the connector is subject to the users sol- dering process. the molex 52418-0510 receptacle called out in the product drawing can be used in solder re?w processes. see molex for speci?ations. 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 accept- able. do not use commercial dishwasher detergents. for faster cleaning, solvents may be used. exercise care in choosing solvents as some may chemically attack the nylon package. for further information refer to appnotes 18 and 19 at www.in?eon.com/opto or in the current in?eon optoelec- tronic data book. see appnote 19, table 2, ?isplays group 2? optical considerations the 0.123" high character of the scdq554xx gives readability up to ?e feet. proper ?ter selection enhances readability over this distance. using ?ters emphasizes the contrast ratio between a lit led and the character background. this will increase the discrimina- tion of different characters. the only limitation is cost. take into consideration 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 effec- tive way to strengthen contrast ratios. the scdq5542x is a high ef?iency red display and should be matched with long wavelength pass ?ter in the 570 nm to 590 nm range. the SCDQ5541x/3x/4x should be matched with a yellow-green band-pass ?ter that peaks at 565 nm. for displays of multiple colors, neutral density grey ?ters offer the best compromise. additional contrast enhancement is gained by shading the dis- plays. 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 overheat the plastic ?ter by allowing for proper air ?w. optimal ?ter enhancements are gained by using circular polar- ized, anti-re?ctive, band-pass ?ters. the circular polarizing fur- ther enhances contrast by reducing the light that travels through the ?ter and re?cts 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, polarizer 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 manufacturers are: r.m.f. products, batavia, il; nobex components, grif?h plas- tic corp., burlingame, ca; photo chemical products of califor- nia, santa monica, ca; i.e.e.-atlas, van nuys, ca.
? 2000 in neon technologies corp. optoelectronics division san jose, ca SCDQ5541/5542/5543/5544/p/q/r www.in neon.com/opto 1-888-in neon (1-888-463-4636) figure 11. scdq554xx interface to siemens/intel 8031 microprocessor (using serial port in mode 0) figure 12. scdq554xx interface to siemens/intel 8031 microprocessor (using one bit of parallel port as serial input) microprocessor interface the microprocessor interface is through the serial port, spi port or one out of eight data bits on the eight bit parallel port and also control lines sdclk and load. power up sequence upon power up display will come on at random. thus the display should be reset at power-up. the reset will set the address regi s- ter to digit 0, user ram is set to 0 (display blank) the control word is set to 0 (100% brightness with lamp test off) and the internal counters are reset. figure 13. scdq554xx interface with motorola 68hc05c4 microprocessor (using spi port) scdq554xx rst xtal rxd txd p3.3 20 f .01 f v cc v cc v cc sdclk sdata load 3 1 5 + 2 4 8031 scdq554xx rst xtal 20 f .01 f v cc v cc v cc sdclk sdata load 3 1 5 + 2 4 8031 p0.0 p3.6 p3.0 scdq554xx rst xtal 20 f .01 f v cc v cc v cc sdclk sdata load 3 1 5 + 2 4 68hc05 p0.0 sclk mosi
? 2000 in neon technologies corp. optoelectronics division san jose, ca SCDQ5541/5542/5543/5544/p/q/r www.in neon.com/opto 1-888-in neon (1-888-463-4636) data contents for the display in a horizontal format ab step d7 d6 d5 d4 d3 d2 d1 d0 function a b (optional) 11 0 11 1 00 0 0 0 10 b b b clear brightness select 1 2 3 4 5 6 10 1 00 0 00 1 01 0 01 1 10 0 00000 00100 01110 10101 00100 00100 digit d0 select row 0 d0 ( ) row 1 d0 ( ) row 2 d0 ( ) row 3 d0 ( ) row 4 d0 ( ) 7 8 9 10 11 12 10 1 00 0 00 1 01 0 01 1 10 0 00001 00100 01010 11111 10001 10001 digit d1 select row 0 d1 (a) row 1 d1 (a) row 2 d1 (a) row 3 d1 (a) row 4 d1 (a) 13 14 15 16 17 18 10 1 00 0 00 1 01 0 01 1 10 0 00010 11110 01001 01110 01001 11110 digit d2 select row 0 d2 (b) row 1 d2 (b) row 2 d2 (b) row 3 d2 (b) row 4 d2 (b) 19 20 21 22 23 24 10 1 00 0 00 1 01 0 01 1 10 0 00011 00100 00100 10101 01110 00100 digit d3 select row 0 d3 ( ) row 1 d3 ( ) row 2 d3 ( ) row 3 d3 ( ) row 4 d3 ( ) loading data into the display use following procedure to load data into the display: 1. power up the display. 2. step a: software clear the display. 3. step b: load the control word with the desired brightness level. 4. load the digit address into the display. 5. load display row and column data for the selected digit. 6. repeat steps 4 and 5 for all digits.
? 2000 in neon technologies corp. optoelectronics division san jose, ca SCDQ5541/5542/5543/5544/p/q/r www.in neon.com/opto 1-888-in neon (1-888-463-4636) user de?able character set examples* upper and lower case alphabets numerals and punctuation *caution: no more than 128 leds ?n?at one time at 100% brightness.
? 2000 in neon technologies corp. optoelectronics division san jose, ca SCDQ5541/5542/5543/5544/p/q/r www.in neon.com/opto 1-888-in neon (1-888-463-4636) user de?able character set examples* (continued) scienti? notations, ect. foreign characters *caution: no more than 128 leds ?n?at one time at 100% brightness.

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