Datasheet

ManualsBrandsBROADCOM ManualsDisplaysDot matrix dislplay Green 3.61 mm No. of digits: 4

HDLX-1414 Series

Four Character Smart Alphanumeric Displays

Data Sheet

ESD Warning: Standard CMOS Handling Precautions should be observed with the HDLX-1414.

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 o ers a larger character set than the

HPDL-1414. Lower case letters and special symbols

are now o ered, made possible by the 5 x 7 dot matrix

character layout.

The di erence 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.

Devices

AlGaAs Red High E ciency Red Orange Yellow Green

HDLS-1414 (sun. view.) HDLO-1414 HDLA-1414 HDLY-1414 HDLG-1414

HDLU-1414 (low power)

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)

Summary of content (9 pages)

PAGE 1
HDLX-1414 Series Four Character Smart Alphanumeric Displays Data Sheet Description Features 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.
PAGE 2
Package Dimensions 17.66 (0.695) 4.45 TYP. (0.175) 0.25 ± 0.13 TYP. (0.010 ± 0.005) 0.39 (2X) TYP. (0.015) 15.30 (0.600) 9.14 (0.360) 20.12 (0.792) PIN 1 IDENTIFIER PART NUMBER LUMINOUS INTENSITY COLOR BIN [3] DATE CODE (YEAR, WEEK) HDLX-1414 6.10 (0.240) YYWW X Z PIN NO. 4.10 (0.160) PIN 1 0.51 ± 0.13 (0.020 ± 0.005) TYP. 2.54 TYP. (0.100) FUNCTION PIN NO.
PAGE 3
Character Set ASCII CODE 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 D1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 D2 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 D3 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 1 2 3 4 5 6 7 8 9 A B C D E F D6 D5 D4 HEX 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 NOTES: 1 = HIGH LEVEL 0 = LOW LEVEL 3 D0
PAGE 4
Recommended Operating Conditions Parameter Symbol Min. Typ. Max. Units Supply Voltage VDD 4.5 5.0 5.5 V Electrical/Optical Characteristics over Operating Temperature Range 4.5 < VDD < 5.5 V (unless otherwise specified) -25°C[1] Parameter Symbol Blank Current IDD (blnk) Input Current II Input Voltage High Input Voltage Low IDD 4 Digits 20 dots/character[2,3] IDD (#) Min. Typ. Max. Max. Units Test Conditions 4.0 mA All Digits Blanked –40 10 A VIN = 0 V to VDD VDD = 5.
PAGE 5
High Efficiency Red HDLO-1414 Parameter Symbol Min. Typ. Units Test Conditions Average Luminous Intensity per Digit, Character Average IV 1.2 3.5 mcd “*” illuminated in All Four Digits. 19 Dots ON per Digit. Peak Wavelength PEAK 635 nm Dominant Wavelength[2] D 626 nm Orange HDLA-1414 Parameter Symbol Min. Typ. Units Test Conditions Average Luminous Intensity per Digit, Character Average IV 1.2 3.5 mcd “*” Illuminated in All Four Digits. 19 Dots ON per Digit.
PAGE 6
AC Timing Characteristics over Operating Temperature Range at VDD = 4.5 V Parameter Symbol Min. Units Address Setup tAS 10 ns Address Hold tAH 40 ns Data Setup tDS 50 ns Data Hold tDH 40 ns Write Time tW 75 ns Timing Diagram Enlarged Character Font 2.29 (0.090) TYP. 2.0 V A0 – A1 0.8 V tAS 0.56 (0.022) TYP. tAH 2.0 V WR 0.8 V 3.61 (0.142) TYP. tW 2.0 V D0 – D6 0.8 V tDS tDH 0.25 (0.010) TYP. 0.51 (0.020) TYP. NOTES: 1.
PAGE 7
Electrical Description Pin Function Description \Write (\WR, Pin 3) WR must be logic 0 to store data in the display. Address Inputs (A1 and A0, Pins 4 and 5) A0 and A1 select a specific location in the display memory. Address 00 accesses the far right character, and address 11 accesses the far left position. VDD (Pin 6) VDD is the positive power supply input. Ground (GND, Pin 7) Ground is the display ground.
PAGE 8
CHARACTER RAM A0 – A 1 D0 – D 6 2 7 WRITE ADDRESS ASCII DECODER DATA OUT 7 CHARACTER SELECT COLUMN DATA DATA IN 5 WRITE WR (4 x 7) 3 ROW SELECT COLUMN DRIVERS ROW DRIVERS OSC + 32 +7 ROW SELECT DISPLAY Figure 2. Display internal block diagram. Soldering Instructions Contrast Enhancement The HDLX-1414 is compatible with hand- and wave-solder processes. The use of a no-clean flux is recommended.
PAGE 9
Color Bin Limits Intensity Bin Limits for HDLS-1414 Color Range (nm) Intensity Range (mcd) Bin Min. Max. Color Bin Min. Max. E 3.97 6.79 Green 1 576.0 580.0 F 5.55 9.50 2 573.0 577.0 G 7.78 13.30 3 570.0 574.0 H 10.88 18.62 4 567.0 571.5 I 15.24 26.07 3 581.5 585.0 J 21.33 36.49 4 584.0 587.5 5 586.5 590.0 6 589.0 592.5 Yellow Note: Test conditions as specified in Optical Characteristic table.