HDLS-1414 HP | Alldatasheet

Document overview

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Technical content

Features

  • Dot Matrix Replacement of HPDL-1414
  • Smart Alphanumeric Display Built-in RAM, ASCII Decoder, and LED Drive Circuitry
  • 128 ASCII Character Set
  • End Stackable
  • Categorized for Luminous Intensity; Yellow and Green Categorized for Color
  • Low Power and Sunlight Viewable AlGaAs Versions
  • Wide Viewing Angle (50˚ Typical)

Description

These are 3.7 mm (0.145 inch) four character 5 x 7 dot matrix displays driven by an on-board CMOS IC. These displays are pin for pin compatible with the HPDL-1414. The IC stores and decodes 7-bit ASCII data and displays it in an easy to read 5 x 7 font. Multiplexing and LED drive circuitry is also included in the display, and fast setup and hold times allow it to interface easily with common microprocessors. The address and data inputs can be directly connected to microprocessor address and data buses. The HDLX-1414 offers a larger character set than the HPDL-1414. Lower case letters and special symbols are now offered, made possible by the 5 x 7 dot matrix character layout. The difference between the sunlight viewable HDLS-1414 and the low power HDLU-1414 lies in the brightness level. The sunlight viewable version is internally set to provide high intensity characters. The low power version uses the same bright LED technology, but reduces the current through each LED to a much lower level, and maintains an intensity comparable to the HDLO-1414. ESD Warning: Standard CMOS Handling Precautions should be observed with the HDLX-1414. Devices AlGaAs Red High Efficiency Red Orange Yellow Green HDLS-1414 (sun. view.) HDLO-1414 HDLA-1414 HDLY-1414 HDLG-1414 HDLU-1414 (low power)

Wave Solder Temperature, Note: 1. Maximum Voltage is with no LEDs illuminated. Package Dimensions PIN NO. FUNCTION PIN NO. FUNCTION GROUND D0 DATA INPUT D1 DATA INPUT D2 DATA INPUT D3 DATA INPUT D6 DATA INPUT D5 DATA INPUT D4 DATA INPUT WR WRITE A1 DIGIT SELECT A0 DIGIT SELECT VDD 17.66 (0.695) 4.45 (0.175) 20.12 (0.792) 9.14 (0.360) 0.51 ± 0.13 6.10 (0.240) 2.54 (0.100)TYP. 15.30 (0.600) 0.25 ± 0.13 DIMENSIONS ARE IN MILLIMETERS (INCHES). PIN 1 IDENTIFIER 4.10 (0.160) HDLX-1414 YYWW X Z PART NUMBER LUMINOUS INTENSITY COLOR BIN [3] DATE CODE (YEAR, WEEK) 0.39 (0.015) TYP. (2X) PIN 1 TYP.

A B C D E F NOTES: 1 = HIGH LEVEL 0 = LOW LEVEL

Recommended Operating Conditions Parameter Symbol Min. Typ. Max. Units Supply Voltage VDD 4.5 5.0 5.5 V AlGaAs Red HDLU-1414 Parameter Symbol Min. Typ. Units Test Conditions Average Luminous IV 1.2 3.1 mcd “*” illuminated in all four digits. Intensity per digit, 19 dots ON per digit. Character Average Peak Wavelength λPEAK 645 nm Dominant λD 637 nm Wavelength[2] Electrical/Optical Characteristics over Operating Temperature Range 4.5 < VDD < 5.5 V (unless otherwise specified). 25˚C[1] Parameter Symbol Min. Typ. Max. Max. Units Test Conditions Blank Current IDD (blnk) 1.0 4.0 mA All Digits Blanked Input Current II –40 µA VIN = 0 V to VDD VDD = 5.0 V Input Voltage High VIH 2.0 VDD V Input Voltage Low VIL GND 0.8 V IDD 4 Digits IDD (#) 110 130 160 mA “#” ON in all four 20 dots/character[2,3] locations Notes: 1. VDD = 5.0 V. 2. Average IDD measured at full brightness. Peak IDD = 28/15 x Average IDD (#). 3. IDD (#) max. = 130 mA, 150˚C IC junction temperature and VDD = 5.5 V. Optical Characteristics at 25˚C[1] VDD = 5.0 V at Full Brightness AlGaAs Red HDLS-1414 Parameter Symbol Min. Typ. Units Test Conditions Average Luminous IV 4.0 12.7 mcd “*” illuminated in all four digits. Intensity per digit, 19 dots ON per digit. Character Average Peak Wavelength λPEAK 645 nm Dominant λD 637 nm Wavelength[2]

High Efficiency Red HDLO-1414 Parameter Symbol Min. Typ. Units Test Conditions Average Luminous IV 1.2 3.5 mcd “*” illuminated in all four digits. Intensity per digit, 19 dots ON per digit. Character Average Peak Wavelength λPEAK 635 nm Dominant λD 626 nm Wavelength[2] Orange HDLA-1414 Parameter Symbol Min. Typ. Units Test Conditions Average Luminous IV 1.2 3.5 mcd “*” illuminated in all four digits. Intensity per digit, 19 dots ON per digit. Character Average Peak Wavelength λPEAK 600 nm Dominant λD 602 nm Wavelength[2] Yellow HDLY-1414 Parameter Symbol Min. Typ. Units Test Conditions Average Luminous IV 1.2 3.7 mcd “*” illuminated in all four digits. Intensity per digit, 19 dots ON per digit. Character Average Peak Wavelength λPEAK 583 nm Dominant λD 585 nm Wavelength[2] Green HDLG-1414 Parameter Symbol Min. Typ. Units Test Conditions Average Luminous IV 1.2 5.6 mcd “*” illuminated in all four digits. Intensity per digit, 19 dots ON per digit. Character Average Peak Wavelength λPEAK 568 nm Dominant λD 574 nm Wavelength[2] Notes: 1. Refers to the initial case temperature of the device immediately prior to the light measurement. 2. Dominant wavelength, λD, is derived from the CIE chromaticity diagram, and represents the single wavelength which defines the color of the device.

AC Timing Characteristics over Operating Temperature Range at VDD = 4.5 V Parameter Symbol Min. Units Address Setup tAS ns Address Hold tAH ns Data Setup tDS ns Data Hold tDH ns Write Time tW ns Enlarged Character Font Timing Diagram tAS tW tAH 2.0 V 0.8 V 2.0 V 0.8 V 2.0 V 0.8 V tDS tDH A0 – A1 WR D0 – D6 0.51 (0.020) TYP. 3.61 (0.142) TYP. 0.56 (0.022) TYP. 0.25 (0.010) TYP. 2.29 (0.090) TYP. NOTES: 1. UNLESS OTHERWISE SPECIFIED, THE TOLERANCE ON ALL DIMENSIONS 2. DIMENSIONS ARE IN MILLIMETERS (INCHES).

Figure 2 shows the HDLX-1414 display internal block diagram. The CMOS IC consists of a 4 x 7 Character RAM, a 128-character ASCII decoder and the refresh circuitry necessary to synchronize the decoding and driving of four 5 x 7 dot matrix characters. Four 7-bit ASCII words are stored in the Character RAM. The IC reads the ASCII data and decodes it vita the 128-character ASCII decoder. This decoder includes the 64-character set of the HPDL- 1414, 32 lower case ASCII symbols, and 32 foreign language symbols. Electrical Description Pin Function \\Write WR must be logic 0 to store data in the (\\WR, pin 3) display. Address Inputs A0 and A1 select a specific location in the (A1 and A0, pins display memory. Address 00 accesses the far 4 and 5) right character, and address 11 accesses the far left position. VDD VDD is the positive power supply input. (pin 6) Ground Ground is the display ground. (GND, pin 7) Data Inputs D0–D6 are used to specify the input data (D0–D6, pins 1, for the display. 2, 8-12) Data Entry Figure 1 shows a truth table for the HDLX-1414 display. Address inputs A0 and A1 are used to select the digit location in the display. When A0 and A1 are both logic low, data is loaded into the right most character. Data inputs D0–D6 are used to load information into the display. Data is latched into the given character address on the rising edge of the \\WR signal. Data and Address inputs must be held stable during the write cycle to ensure that correct data is stored in the display. Mechanical and Electrical Considerations The HDLX-1414 is a 12-pin DIP package that can be stacked to create a character array of any size. The display is designed to operate reliably in –40˚C to +85˚C ambient temperatures. The HDLX-1414 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 a protective air gap over the LED wire bonds. Backfill epoxy environmentally seals the display package. This package construction makes the display highly tolerant to temperature cycling and allows wave soldering. ESD and Latchup Protection The inputs to the CMOS IC are protected against static discharge and input current latchup. However, for best results, standard CMOS handling precautions should be used. Prior to use, the HDLX-1414 should be stored in antistatic 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 since they are prone to static charge build-up. Input current latchup can be caused when the CMOS inputs are subjected either to a voltage below ground (Vin < ground) or higher than VDD (Vin > VDD) 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 VDD. Voltages should not be \\WR Function X X X X X X X X X No Change Digit 0 ASCII Data (Right Most Character) Digit 1 ASCII Data Digit 2 ASCII Data Digit 3 ASCII Data (Left Most Character) Figure 1. Display Truth Table 0 = Logic 0; 1 = Logic 1; X = Do Not Care.

Figure 2. Display Internal Block Diagram.

3 ROW

Intensity Range (mcd) Bin 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 Note: Test conditions as specified in Optical Characteristic table. Intensity Bin Limits for HDLS-1414 Intensity Range (mcd) Bin Min. Max. A 1.20 1.77 B 1.45 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 Note: Test conditions as specified in Optical Characteristic table. Intensity Bin Limits for HDLX-1414 Color Range (nm) Color Bin Min. Max. Green 576.0 580.0 573.0 577.0 570.0 574.0 567.0 571.5 Yellow 581.5 585.0 584.0 587.5 586.5 590.0 589.0 592.5 Note: Test conditions as specified in Optical Characteristic table. Color Bin Limits

www.agilent.com/semiconductors For product information and a complete list of distributors, please go to our web site. For technical assistance call: Americas/Canada: +1 (800) 235-0312 or (916) 788-6763 Europe: +49 (0) 6441 92460 China: 10800 650 0017 Hong Kong: (+65) 6756 2394 India, Australia, New Zealand: (+65) 6755 1939 Japan: (+81 3) 3335-8152 (Domestic/Interna- tional), or 0120-61-1280 (Domestic Only) Korea: (+65) 6755 1989 Singapore, Malaysia, Vietnam, Thailand, Philippines, Indonesia: (+65) 6755 2044 Taiwan: (+65) 6755 1843 Data subject to change. Copyright © 2004 Agilent Technologies, Inc. Obsoletes 5988-2802EN July 14, 2004 5988-3270EN