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broadcom - 1 - description these are 5.0 mm (0.2 inch) four character 57 dot matrix displays driven by an onboard cmos ic. these displays are pin-for-pin compatible with the hpdl-2416. the ic stores and decodes 7-bit ascii data and displays it using a 57 font. multiplexing circuitry, and drivers are also part of the ic. the ic has fast setup and hold times that makes it easy to interface to a microprocessor. absolute maximum ratings features ? enhanced drop-in replacement to hpdl-2416 ? smart alphanumeric display ? built-in ram, ascii decoder, and led drive circuitry ? cmos ic for low-power consumption ? software controlled dimming levels and blank ? 128 ascii character set ? end-stackable ? categorized for luminous intensity; yellow and green categorized for color ? low-power and sunlight-viewable alingap versions ? wide operating temperature range, C40c to +85c ? excellent esd protection ? wide viewing angle (50 typ.) esd warning : standard cmos handling pr ecautions should be observed with the hdlx-2416. supply voltage, v dd to ground a a. maximum voltage with no leds illuminated. C0.5v to 7.0v input voltage, any pin to ground C0.5v to vdd +0.5v free air operating temperature range, t a C40c to +85c storage temperature, t s C40c to +100c cmos ic junction temperature, t j (ic) +150c relative humidity (non-c ondensing) at 65c 85% soldering temperature [1.59 mm (0.063 in.) below body] solder dipping wave soldering 260c for 5 sec. 250c for 3 sec. esd protection, r = 1.5 k ? , c = 100 pf v z = 2 kv (each pin) hdlx-2416 series four character 5.0 mm (0.2 inch) smart 57 alphanumeric displays data sheet
broadcom - 2 - hdlx-2416 series data sheet devices the address and data inputs can be directly connected to the microprocessor address and data buses. the hdlx-2416 has several enhancements over the hpdl-2416. these features include an expanded character set, internal 8-level dimming control, external dimming capability, and individual digit blanking. finally, the extended functions can be disabled which allows the hdlx-2416 to operate exactly like an hpdl-2416 by disabling all of the enhancements except the expanded character set. the difference between the sunlight viewable hdls-2416 and the low power hdlu-2416 occurs at power-on or at the default brightness level. following power up, the hdls-2416 operates at the 100% brightness level, while the hdlu-2416 operates at the 27% brightness level. power on sets the internal brightness control (bits 3C5) in the control register to binary code (000). for the hdls-2416 binary code (000) corresponds to a 100% brightness level, and for the hdlu-2416 binary code (000) corresponds to a 27% brightness level. the other seven brightness levels are identical for both parts. deep red high efficiency red orange yellow green hdls-2416 hdlo-2416 hdla-2416 HDLY-2416 hdlg-2416 hdlu-2416 hdlo-2416-ef000 hdlg-2416-fg000
broadcom - 3 - hdlx-2416 series data sheet package dimensions 25.15 (0.990) typ. 6.35 (0.250) 3.05 (0.120) 10.03 (0.395) 20.07 (0.790) 5.08 (0.200) 3.43 (0.135) 0.51 0.13 (0.020 0.005) typ. 6.60 (0.260) 2.41 (0.095) 2.54 (0.100) typ. ref. date code (year, week) 4.06 (0.160) 10.16 (0.400) 2.41 (0.095) typ. 0.38 (0.015) 15.24 (0.600) 0.25 0.13 (0.010 0.005) typ. ref. 1.52 (0.060) image plane ref. ref. notes: 1. unless otherwise specified, the tolerance on all dimensions is 0.254 mm ( 0.010). 2. all dimensions are in millimeters (inches). 3. for yellow and green displays only. pin 1 identifier hdlx-2416 yyww x z part number luminous intensity color bin (3)
broadcom - 4 - hdlx-2416 series data sheet pin numbering and location pin no. function pin no. function 1 ce1 chip enable 10 gnd 2 ce2 chip enable 11 d0 data input 3 clr clear 12 d1 data input 4 cue cursor enable 13 d2 data input 5 cu cursor select 14 d3 data input 6wr write 15d6 data input 7 a1 address input 16 d5 data input 8 a0 address input 17 d4 data input 9 vdd 18 bl display blank ce1 gnd d0 d1 d2 d3 d6 d5 d4 bl vdd a0 a1 wr cu cue clr ce2 1 2 3 4 5 6 7 8 910 11 12 13 14 15 16 17 18
broadcom - 5 - hdlx-2416 series data sheet character set ascii code d0 d1 d2 d3 hex 0 0 0 0 0 d6 d5 d4 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 000 0 001 1 010 2 011 3 100 4 101 5 110 6 111 7 notes: 1 = high level 0 = low level
broadcom - 6 - hdlx-2416 series data sheet recommended operating conditions electrical characteristics over operating temperature range 4.5v < v dd < 5.5v (unless otherwise specified) all devices hdlo/hdla/hdly/hdlg-2416 parameter symbol min. typ. max. unit supply voltage vdd 4.5 5.0 5.5 v parameter symbol min. 25c a a. v dd = 5.0v. max. unit test conditions typ. max. idd blank i dd (blank) 1.0 4.0 ma all digits blanked input current i i C40 +10 a v in = 0v to v dd v dd = 5.0v input voltage high v ih 2.0 v dd v input voltage low v il gnd 0.8 v parameter symbol min. 25c a a. v dd = 5.0v. max. unit test conditions typ. max. i dd 4 digits 20 dots/character b , c b. average i dd measured at full brightness. peak i dd = 28/15 average i dd (#). c. i dd (#) max. = 135 ma for hdlo/hdla/hdly/hdlg-2 416, 146 ma for hdls-2416, and 42 ma for hdlu-2416 at default brightness, 150c ic j unction temperature and v dd = 5.5v. i dd (#) 110 135 160 ma # on in all four locations i dd cursor all dots on at 50% i dd (cu) 92 110 135 ma cursor on in all four locations
broadcom - 7 - hdlx-2416 series data sheet hdls/hdlu-2416 optical characteristics at 25c (see note) vdd = 5.0 v at full brightness note refers to the initial case temperature of the device immediately prior to the light measurement. hdls/hdlu-2416 hdlo-2416 part number parameter symbol 25c a a. v dd = 5.0 v. max. unit test conditions typ. max. hdls-2416 i dd 4 digits 20 dots/character b , c b. average i dd measured at full brightness. peak i dd = 28/15 average i dd (#). c. i dd (#) max. = 135 ma for hdlo/hdla/hdly/hdlg-2 416, 146 ma for hdls-2416, and 42 ma for hdlu-2416 at default brightness, 150 c ic junction temperature and v dd = 5.5 v. i dd (#) 125 146 180 ma four # on in all four locations hdlu-2416 344252 hdls-2416 i dd cursor all dots on @ 50% i dd (cu) 105 124 154 ma four cursors on in all four locations hdlu-2416 293645 part number parameter symbol min. typ. unit test conditions hdls-2416 average luminous intensity per digit, character average i v 4.0 12.7 mcd * illuminated in all four digits, 19 dots on per digit hdlu-2416 1.2 3.1 mcd all peak wavelength ? peak 645 nm dominant wavelength a a. dominant wavelength, ? d , derived from the cie chromaticity diagra m, and represents the single wavelength which defines the color of the device. ? d 637 nm parameter symbol min. typ. unit test conditions average luminous intensity per digit, character average i v 1.2 3.5 mcd * illuminated in all four digits. 19 dots on peak wavelength ? peak 635 nm dominant wavelength a a. dominant wavelength, ? d , derived from the cie chromaticity diagra m, and represents the single wavelength which defines the color of the device. ? d 626 nm
broadcom - 8 - hdlx-2416 series data sheet hdla-2416 HDLY-2416 hdlg-2416 parameter symbol min. typ. unit test conditions average luminous intensity per digit, character average i v 1.2 3.5 mcd * illuminated in all four digits. 19 dots on peak wavelength ? peak 600 nm dominant wavelength a a. dominant wavelength, ? d , derived from the cie chromaticity diagra m, and represents the single wavelength which defines the color of the device. ? d 602 nm parameter symbol min. typ. unit test conditions average luminous intensity per digit, character average i v 1.2 3.75 mcd * illuminated in all four digits. 19 dots on peak wavelength ? peak 583 nm dominant wavelength a a. dominant wavelength, ? d , derived from the cie chromaticity diagra m, and represents the single wavelength which defines the color of the device. ? d 585 nm parameter symbol min. typ. unit test conditions average luminous intensity per digit, character average i v 1.2 5.6 mcd * illuminated in all four digits. 19 dots on peak wavelength ? peak 568 nm dominant wavelength a a. dominant wavelength, ? d , derived from the cie chromaticity diagra m, and represents the single wavelength which defines the color of the device. ? d 574 nm
broadcom - 9 - hdlx-2416 series data sheet ac timing characteristics over operating temperature range at v dd = 4.5v timing diagram parameter symbol min. unit address setup t as 10 ns address hold t ah 40 ns data setup t ds 50 ns data hold t dh 40 ns chip enable setup t ces 0ns chip enable hold t ceh 0ns write time t w 75 ns clear t clr 10 s clear disable t clrd 1s ce 1 t ces t as t w t ah t ceh 2.0v 0.8v 2.0v 0.8v 2.0v 0.8v 2.0v 0.8v t ds t dh t clrd t clr 2.0v 0.8v ce 2 a 0 C a 1 , cu wr d 0 C d 6 clr
broadcom - 10 - hdlx-2416 series data sheet enlarged character font note 1. unless otherwise specified, the tolerance on all dimensions is 0.254 mm (0.010 inch). 2. dimensions are in mm (inches). electrical description pin function description chip enable (ce 1 and ce 2 , pins 1 and 2) ce 1 and ce 2 must be a logic 0 to write to the display. clear (clr , pin 3) when clr is a logic 0 the ascii ram is reset to 20hex (space) and the control register/attribute ram is reset to 00hex. cursor enable (cue pin 4) cue determines whether the ic displa ys the ascii or the cursor memory. (1 = cursor, 0 = ascii). cursor select (cu , pin 5) cu determines whether data is stored in the asc ii ram or the attribute ram/control register. (1 = ascii, 0 = attribute ram/control register). write (wr , pin 6) wr must be a logic 0 to store data in the display. address inputs (a 1 and a 0 , pins 8 and 7) a 0 Ca 1 selects a specific location in the display memory. address 00 accesses the far right display location. address 11 accesses the far left location. data inputs (d 0 Cd 6 , pins 11-17) d 0 Cd 6 are used to specify the input data for the display. v dd (pin 9) v dd is the positive power supply input. gnd (pin 10) gnd is the display ground. blanking input (bl , pin 18) bl is used to flash the display, blank the display or to dim the display. 0.80 (0.031) typ. 5.08 (0.200) 0.80 (0.031) typ. 0.25 (0.010) typ. 3.43 (0.135)
broadcom - 11 - hdlx-2416 series data sheet display internal block diagram figure 1 shows the hdlx-2416 display internal block diagram. the cmos ic consists of a 47 character ram, a 24 attribute ram, a 5-bit control register, a 128 character ascii decoder and the refresh circuitry necessary to synchronize the decoding and driving of four 5 7 dot matrix displays. four 7-bit ascii words are stored in the character ram. the ic reads the ascii data and decodes it via the 128 character ascii decoder. the ascii decoder includ es the 64 character set of the hpdl-2416, 32 lower case ascii symbols, and 32 foreign language symbols. a 5-bit word is stored in the control register. three fields within the control register provide an 8-level brightness control, master blank, and extended functions disable. for each display digit location, two bits are stored in the attribute ram. one bit is used to enable a cursor character at each digit location. a second bit is used to individually disable the blanking features at each digit location. the display is blanked and dimmed through an internal blanking input on the row drivers. logic within the ic allows the user to dim the display either through the bl input or through the brightness control in the control register. similarly the display can be blanked through the bl input, the master blank in the control register, or the digit blank disable in the attribute ram.
broadcom - 12 - hdlx-2416 series data sheet figure 1 internal block diagram character ram ascii decoder character/cursor multiplexer write address a 0 C a 1 2 d 0 C d 6 7 data in data out 7 character select column data 5 0 3 row select osc + 32 + 7 digital duty control row drivers display column drivers row select blank clr attribute ram digit cursor d 0 d 1 digit blank disable clr control register master blank d 2 d 3 C d 5 3 brightness levels clr d 6 extended functions display write clr clr clr write 2 read address 5 1 cursor character character/ cursor multiplexer select cue dc n (4 x 7) ce 1 ce 2 wr cu ce 1 ce 2 wr cu write write address a 0 C a 1 read address 2 (2 x 4) 1 x 5 3 4 (lsbs) 2 (msbs) 3 efd efd efd dbd n mb bl
broadcom - 13 - hdlx-2416 series data sheet display clear data stored in the character ram, control register, and attribute ram will be cleared if the clear ( clr ) is held low for a minimum of 10 s. note that the display will be cleared regardless of the state of the chip enables ( ce 1 , ce 2 ). after the display is cleared, the ascii code for a space (20hex) is loaded into all character ram locations and 00hex is loaded into all attribute ram/control register memory locations. data entry figure 2 shows a truth table for the hdlx-2416 display. setting the chip enables ( ce 1 , ce 2 ) to logic 0 and the cursor select (cu) to logic 1 will enable ascii data loading. when cursor select ( cu ) is set to logic 0, data will be loaded into the control register and attribute ram. address inputs a 0 Ca 1 are used to select the digit location in the display. data inputs d 0 Cd 6 are used to load information into the display. data will be latched into the display on the rising edge of the wr signal. d 0 Cd 6 , a 0 C a 1 , ce 1 , ce 2 , and cu must be held stable during the write cycle to ensure that correct data is stored into the display. data can be loaded into the display in any order. note that when a 0 and a 1 are logic 0, data is stored in the right most display location. cursor when cursor enable (cue) is a logic 1, a cursor will be displayed in all digit locations where a logic 1 has been stored in the digit cursor memory in the attribute ra m. the cursor consists of all 35 dots on at half brightness. a flashing cursor can be displayed by pulsing cue. when cu e is a logic 0, the ascii data stored in the character ram will be displayed regardless of the digit cursor bits. blanking blanking of the display is controlled through the bl input, the control register and attribute ram. the user can achieve a variety of functions by using these controls in different combinations, such as full hardware display blank, software blank, blanking of individual characters, and synchronized flashing of individual characters or entire display (by strobing the blank input). all of these blanking modes affect only the output drivers, maintaining the contents and write capability of the internal rams and control register, so that normal loading of rams and control register can take place even with the display blanked.
broadcom - 14 - hdlx-2416 series data sheet figure 2 display truth table
broadcom - 15 - hdlx-2416 series data sheet table 1 shows how the extended function disable (bit d6 of the control register), master blank (bit d2 of the control register), digit blank disable (bit d1 of the attribute ram), and bl input can be used to blank the display. when the extended function disable is a logic 1, the display can be blanked only with the bl input. when the extended function disable is a logic 0, the display can be blanked through the bl input, the master blank, and the digit blank disable. the entire display will be blanked if either the bl input is logic 0 or the master blank is logic 1, providing all digit blank disable bits are logic 0. those digits with digit blank disable bits a logic 1 will ignore both blank signals and remain on. the digit blank disable bits allow individual characters to be blanked or flashed in sy nchronization with the bl input. dimming dimming of the display is controlled through either the bl input or the control register. a pulse width modulated signal can be applied to the bl input to dim the display. a three bit word in the control register generates an internal pulse width modulated signal to dim the di splay. the internal dimming feature is enabled only if the extended function disable is a logic 0. bits 3C5 in the control register provide internal brightness control. these bits are interpreted as a three bit binary code, with code (000) corresponding to the maximum brightness and code (111) to the minimum brightness. in addition to varying the display brightness, bits 3C5 also vary the average value of idd. idd can be specif ied at any brightness level as shown in table 2 . table 1 display blanking truth table efd mb dbd n bl 0000display blanked by bl 0 0x 1 display on 0 x 1 0 display blanked by pl. individual characters "on" based on "1" being stored in dbd n 0 1 0 x display blanked by mb 0111display blanked by mb. individual characters "on" based on "1" being stored in dbd n 1 x x 0 display blanked by bl 1 x x 1 display on table 2 current requirements at different brightness levels symbol d 5 d 4 d 3 brightness 25c typ. 25c max. max. over temp. unit i dd (#) 000100% 110 130 160 ma 00160% 66 79 98 ma 01040% 45 53 66 ma 01127% 30 37 46 ma 10017% 20 24 31 ma 10110% 12 15 20 ma 1107% 9 11 15 ma 1113% 4 6 9 ma
broadcom - 16 - hdlx-2416 series data sheet figure 3 intensity modulation control using an astable multivibrator (reprinted with permission from electronics magazine, sept.19, 1974, vnu business pub. inc.) figure 3 shows a circuit designed to dim the display from 98% to 2% by pulse width modulating the bl input. a logarithmic or a linear potentiometer may be used to adjust the display intensity. however, a logarith mic potentiometer matches the response of the human eye and therefore provides better resolution at low intensities. the circuit frequency should be designed to operate at 10 khz or higher. lower frequencies may cause the display to flicker. extended function disable extended function disable (bit d6 of the control register) disables the extended blanking and dimming functions in the hdlx-2416. if the extended function disable is a logic 1, the internal brightness control, master blank, and digit blank disable bits are ignored. however the bl input and cursor control are still active. this allows downward compatibility to the hpdl-2416. mechanical and electrical considerations the hdlx-2416 is an 18 pin dip package that can be stacked horizontally and vertically to create arrays of any size. the hdlx-2416 is designed to operate continuously from C40c to +85c for all possible input conditions. the hdlx-2416 is assembled by die attaching and wire bonding 140 leds and a cmos ic to a high temperature printed circuit board. a polycarbonate lens is placed over the pc board creating an air gap environment for the led wire bonds. backfill epoxy environmentally seals the display package. this package construc tion makes the display highly tolerant to temperature cycling and allows wave soldering. the inputs to the cmos ic are protected against static discharge and input current latchup. however, for best results standard cmos handling precauti ons should be used. prior to use, the hdlx-2416 should be st ored in anti-static tubes or conductive material. during assembly a grounded conductive work area should be used, and assembly personnel should wear conductive wrist straps. lab coats made of synthetic material should be avoided si nce they are prone to static charge build-up. input current latchup is caused when the cmos inputs are subjected either to a voltage below ground (vin < ground) or to a voltage higher than v dd (v in > v dd ) and when a high current is forced into the input. to prevent input current latchup and esd damage, unused inputs should be connected either to ground or to v dd . voltages should not be applied to the inputs until v dd has been applied to the display. transient input voltages should be eliminated. soldering and post solder cleaning instructions for the hdlx-2416 the hdlx-2416 may be hand soldered or wave soldered with sn63 solder. when hand soldering it is recommended that an electronically temperature controlled and securely grounded soldering iron be used. for best results, the iron tip temperature should be set at 315c (600f). for wave soldering, a rosin-based rma flux can be used. the solder wave temperature should be set at 245c 5c (473f 9f), and dwell in the wave should be set between 1.5 to 3 seconds for optimum soldering. the preheat temperature should not exceed 110c (230f) as measured on the solder side of the pc board. for further information on solder ing and post solder cleaning, see application note 1027, soldering led components . contrast enhancement the objective of contrast enhancement is to provide good readability in the end users ambient lighting conditions. the concept is to employ both luminance and chrominance contrast techniques. these enha nce readability by having the off-dots blend into the displa y background and the on-dots vividly stand out against the same background. for additional information on contrast enhanc ement, see application note 1015. + v dd 555 bl (pin 18) 10 khz output 1 k 250 k log 400 pf 6 21 1 k 1n914 7 8 4 3
broadcom - 17 - hdlx-2416 series data sheet intensity bin limits for hdls-2416 note test conditions as specified in optical characteristic table. intensity bin limits for hdlx-2416 note test conditions as specified in optical characteristic table. color bin limits note test conditions as specified in optical characteristic table. bin intensity range (mcd) min. max. e 3.97 6.79 f 5.55 9.50 g 7.78 13.30 h 10.88 18.62 i 15.24 26.07 j 21.33 36.49 bin intensity range (mcd) min. max. a 1.20 1.77 b 1.25 2.47 c 2.02 3.46 d 2.83 4.85 e 3.97 6.79 f 5.55 9.50 g 7.78 13.30 color bin color range (nm) min. max. yellow 3 581.5 585.0 4 584.0 587.5 5 586.5 590.0 6 589.0 592.5 green 1 576.0 580.0 2 573.0 577.0 3 570.0 574.0 4 567.0 571.5
for product information and a complete list of distributors, please go to our web site: www.broadcom.com . broadcom, the pulse logo, connecting everything, avago technologies, avago, and the a logo are among the trademarks of broadcom and/or its affiliates in the united states, certain other countries and/or the eu. copyright ? 2017 by broadcom. all rights reserved. the term "broadcom" refers to broadcom limited and/or its subsidiaries. for more information, please visit www.broadcom.com . broadcom reserves the right to make changes without further notice to any products or data herein to improve reliability, function, or design. information furnished by broadcom is believed to be accurate and reliable. however, broadcom does not assume any liability arising out of the application or use of this information, nor the application or use of any product or circuit described herein, neither does it convey any license under its patent rights nor the rights of others. av02-0662en C may 15, 2017

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