HDLA-3416 - AVAGO TECHNOLOGIES - searchdatasheet.com

HDLx-3416 Series

Four Character 6.9 mm (0.27 inch)

Smart 5 x 7 Alphanumeric Displays

Data Sheet

ESD WARNING: Standard CMOS handling precautions should be observed to avoid static discharge.

Features

 Smart alphanumeric display

Built-in RAM, ASCII decoder, and LED drive circuitry

 Software controlled dimming and blanking

 128 ASCII character set

 End-stackable

 Categorized for luminous intensity

– Yellow and Green categories for color

– Use of like categories yields a uniform display

 Wide operating temperature range -40°C to +85°C

 Wave solderable

 Wide viewing angle (50° typical)

Description

These are 5 x 7 dot matrix displays with four 0.27” tall char-

acters, driven by an on-board CMOS IC. The IC stores and

decodes 7 bit ASCII data and displays it with an easy to read 5 x 7

font. Multi-plexing circuitry and drivers are included in the IC

to allow the display to interface simply with bus-based

micro processor systems.

The address and data inputs of the display can be directly

con nected to the microprocessor address and data buses.

These displays are related to the HDLX-2416 family, and

thus share the same enhancements over the HPDL-2416

segmented displays. These features include support

for the full 128 character US ASCII character set, 8 level

dimming control, external hardware dimming capability,

and digit blanking.

An extended function disable exists for those designers

who desire compatibility with competitive displays.

This function disables the dimming and digit blanking

controls.

Devices:

High E ciency Red Orange Yellow Green

HDLO-3416 HDLA-3416 HDLY-3416 HDLG-3416

Absolute Maximum Ratings

Supply Voltage, VDD to Ground[1] -0.5 V to 7.0 V

Input Voltage, Any Pin to Ground -0.5 V to VDD + 0.5 V

Free Air Operating Temperature Range, TA -40°C to +85°C

Storage Temperature, TS -40°C to +85°C

CMOS IC Junction Temperature, TJ (IC) +150°C

Relative Humidity (non-condensing) at 65°C 85%

Soldering Temperature [1.59 mm (0.063 in.) Below Body]

Solder Dipping 260°C for 5 secs

Wave Soldering 250°C for 3 secs

ESD Protection, R = 1.5 k, C = 100 pF VZ = 1 kV (each pin)

Note:

1. Maximum Voltage is with no LEDs illuminated.

Package Dimensions

Notes:

1. Unless otherwise speci ed, the tolerance on all dimensions is ± 0.254 mm (0.010).

2. All dimensions are in millimeters (inches).

32.77

(1.290)

8.26

(0.325)

10.03

(0.395)

20.07

(0.790)

6.86

(0.270)

4.45

(0.175)

0.51

(0.020)TYP.

8.64

(0.340)

2.54

(0.100)TYP.

4.06

(0.160)

10.16

(0.400)

2.41

(0.095)TYP.

0.38

(0.015)

15.24

(0.600)

0.25

(0.010)TYP.

PIN 1 IDENTIFIER

PIN NO. FUNCTION PIN NO. FUNCTION

NO CONNECT

CE1

CE2

CLR

VDD

CUE

GROUND

NO CONNECT

Character Set

ASCII

CODE

HEX

D6 D5 D4

000 0

001 1

010 2

011 3

100 4

101 5

110 6

111 7

NOTES: 1 = HIGH LEVEL

0 = LOW LEVEL

Electrical/Optical Characteristics over Operating Temperature Range

4.5 < VDD < 5.5 V (unless otherwise speci ed)

All Devices

25°C[1]

Parameter Symbol Min. Typ. Max. Max. Units Test Conditions

IDD Blank IDD (blnk) 1.0 4.0 mA All Digits Blanked

Input Current II -40 10 A VIN = 0 V to VDD

DD = 5.0 V

Input Voltage High VIH 2.0 VDD V

Input Voltage Low VIL GND 0.8 V

IDD 4 Digits 20 Dots/ IDD (#) 110 130 160 mA “#” ON in All Four

Character[2,3] Locations

IDD Cursor All Dots IDD (CU) 92 110 135 mA Cursor ON in All

ON @ 50% Four 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.

Recommended Operating Conditions

Parameter Symbol Min. Typ. Max. Units

Supply Voltage VDD 4.5 5.0 5.5 V

Optical Characteristics at 25°C[1]

VDD = 5.0 V at Full Brightness

High E ciency Red HDLO-3416

Parameter Symbol Min. Typ. Units Test Conditions

Average Luminous Intensity IV 1.2 3.5 mcd “*” Illuminated in All Four Digits.

per Digit, Character Average 19 Dots ON per Digit.

Peak Wavelength PEAK 635 nm

Dominant Wavelength[2] D 626 nm

Orange HDLA-3416

Parameter Symbol Min. Typ. Units Test Conditions

Average Luminous Intensity IV 1.2 3.5 mcd “*” Illuminated in All Four Digits

per Digit, Character Average 19 Dots ON per Digit.

Peak Wavelength PEAK 600 nm

Dominant Wavelength[2] D 602 nm

Yellow HDLY-3416

Parameter Symbol Min. Typ. Units Test Conditions

Average Luminous Intensity IV 1.2 3.7 mcd “*” Illuminated in All Four Digits

per Digit, Character Average 19 Dots ON per Digit.

Peak Wavelength PEAK 583 nm

Dominant Wavelength[2] D 585 nm

Green HDLG-3416

Parameter Symbol Min. Typ. Units Test Conditions

Average Luminous Intensity IV 1.2 5.6 mcd “*” Illuminated in All Four Digits

per Digit, Character Average 19 Dots ON per Digit.

Peak Wavelength PEAK 568 nm

Dominant Wavelength[2] D 574 nm

Notes:

1. Refers to the initial case temperature of the device immediately prior to the light measurement.

2. Dominant wavelength, D, is derived from the CIE chromaticity diagram, and represents the single wavelength which de nes the color of the

device.

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

Chip Enable Setup tCES 0 ns

Chip Enable Hold tCEH 0 ns

Write Time tW 75 ns

Clear tCLR 10 s

Clear Disable tCLRD 1 s

Timing Diagram Enlarged Character Font

Notes:

1. Unless otherwise speci ed, the tolerance on

all dimensions is ± 0.254 mm (0.010").

2. Dimensions are in millimeters (inches).

CE1

tCES

tAS

tAH

tCEH

2.0 V

0.8 V

2.0 V

0.8 V

2.0 V

0.8 V

2.0 V

0.8 V

tDS tDH

tCLRD

tCLR

2.0 V

0.8 V

CE2

A0 – A1, CU

D0 – D6

CLR

1.05 (0.041)

TYP.

6.9 (0.27)

TYP.

1.09 (0.043)

TYP.

0.25 (0.010)

TYP.

4.4 (0.175)

TYP.

Display Internal Block Diagram

Figure 1 shows the HDLX-3416 display internal block

diagram. The CMOS IC consists of a 4 x 7 Character RAM, a

2 x 4 Attribute RAM, a 5 bit Control Register, a 128 character

ASCII decoder and the refresh circuitry necessary to syn-

chronize the decoding and driving of four 5 x 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 includes 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  elds

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

BL input, the Master Blank in the Control Register, or the

Digit Blank Disable in the Attribute RAM.

Electrical Description

Pin Function Description

Chip Enable (CE1 and CE1 and CE2 must be a logic 0 to write to the display.

CE2, Pins 3 and 4)

Clear (CLR, Pin 5) 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 determines whether the IC displays the ASCII or

(CUE Pin 11) the Cursor memory. (1 = Cursor, 0 = ASCII.)

Cursor Select CU determines whether data is stored in the ASCII

(CU, Pin 10) RAM or the Attribute RAM/Control Register.

(1 = ASCII, 0 = Attribute RAM/ Control Register.)

Write (WR, Pin 9) WR must be a logic 0 to store data in the display.

Address Inputs A0-A1 selects a speci c location in the display

(A1 and A0, Pins memory. Address 00 accesses the far right display

7 and 8) location. Address 11 accesses the far left location.

Data Inputs (D0-D6, D0-D6 are used to specify the input data for

Pins 16 – 22) the display.

VDD (Pin 6) VDD is the positive power supply input.

GND (Pin 12) GND is the display ground.

Blanking Input BL is used to  ash the display, blank the

(BL, Pin 14) display or to dim the display.

Figure 1. Internal block diagram.

CHARACTER RAM ASCII DECODER

CHARACTER/CURSOR

MULTIPLEXER

WRITE

ADDRESS

A0 – A12

D0 – D67DATA IN

DATA

OUT

7CHARACTER

SELECT COLUMN

DATA

3ROW

SELECT

OSC + 32 + 7

DIGITAL

DUTY

CONTROL

ROW

DRIVERS

DISPLAY

COLUMN

DRIVERS

ROW

SELECT

BLANK

CLR

ATTRIBUTE RAM

DIGIT CURSORD0

D1DIGIT BLANK

DISABLE

CLR

CONTROL REGISTER

MASTER

BLANK

D3 – D53BRIGHTNESS

LEVELS

CLR

EXTENDED

FUNCTIONS

DISPLAY

WRITE

CLR

WRITE

2READ

ADDRESS 51

CURSOR

CHARACTER

CHARACTER/

CURSOR

MULTIPLEXER

SELECT

CUE DCn

(4 x 7)

CE1

CE2

CE1

CE2

WRITE

WRITE ADDRESSA0 – A1

READ ADDRESS

(2 x 4)

1 x 5

4 (LSBs)

2 (MSBs)

EFD

DBDn

0 = Logic 0; 1 = Logic 1; X = Do Not Care

Figure 2. Display truth table.

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 μs. Note that the display will be

cleared regardless of the state of the chip enables (CE1,

CE2). 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-3416 display.

Setting the chip enables (CE1, CE2) 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

A0-A1 are used to select the digit location in the display.

Data inputs D0-D6 are used to load information into the

display. Data will be latched into the display on the rising

edge of the WR signal. D0-D6, A0-A1, CE1, CE2, 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 A0 and A1 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 RAM.

The cursor consists of all 35 dots ON at half brightness. A

 ashing cursor can be displayed by pulsing CUE. When

CUE is a logic 0, the ASCII data stored in the Character RAM

will be dis played regardless of the Digit Cursor bits.

Blanking

Blanking of the display is con trolled through the BL input,

the Control Register, and Attribute RAM. The user can

achieve a variety of functions by using these controls

in di erent combinations, such as full hardware display

blank, software blank, blanking of individual characters,

and syn chronized  ashing of individual characters or

entire display (by strobing the blank input). All of these

blanking modes a ect only the output drivers, maintain-

ing 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.

CUE BL CLR CE1 CE2 WR CU A1 A

0 D

6 D

5 D

4 D

3 D

2 D

1 D

0 Function

0 1 1 Display ASCII

1 1 1 Display Stored Cursor

X X 0

X X X X X X X X X X X X X

Reset RAMs

X 0 1 Blank Display but do not reset

RAMs and Control Register

Extended Intensity Master Digit Digit Write to Attribute RAM

0 0 0 Functions Control Blank Blank Cursor and Control Register

Disable Disable 0 0

0 = 000 = 100% 0 = Digit Digit DBDn = 0, Allows Digit n to be

0 0 1 Enable 001 = 60% Display Blank Cursor blanked

1-D5 010 = 40% ON Disable 1 1

011 = 27% DBDn = 1 Prevents Digit n from

X X 1 0 0 0 1 = 100 = 17% 1 = Digit Digit being blanked.

0 1 0 Disable 101 = 10% Display Blank Cursor

1-D5 110 = 7% Blanked Disable 2 2 DCn = 0 Removes cursor from

111 = 3% Digit n

0 Digit Digit

0 1 1 Always Blank Cursor DCn = 1 Stores cursor at

Enabled Disable 3 3 Digit n

1 0 0 Digit 0 ASCII Data (Right Most Character)

X X 1 0 0 0 1 0 1 Digit 1 ASCII Data Write to Character RAM

1 1 0 Digit 2 ASCII Data

1 1 1 Digit 3 ASCII Data (Left Most Character)

1 X X

X X 1 X 1 X X X X X X X X X X X No Change

X X 1

Table 1. Current Requirements at Di erent Brightness Levels

Symbol D5 D

4 D

3 Brightness 25°C Typ. 25°C Max. Max. over Temp. Units

IDD(#) 0 0 0 100% 110 130 160 mA

0 0 1 60% 66 79 98 mA

0 1 0 40% 45 53 66 mA

0 1 1 27% 30 37 46 mA

1 0 0 17% 20 24 31 mA

1 0 1 10% 12 15 20 mA

1 1 0 7% 9 11 15 mA

1 1 1 3% 4 6 9 mA

Figure 3. Display blanking truth table.

Figure 3 shows how the Extended Function Disable (bit D6

of the Control Register), Master Blank (bit D2 of the Control

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, pro vid ing 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 individ-

ual characters to be blanked or  ashed in synchronization

with the BL input.

Dimming

Dimming of the display is con trolled 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 display.

The internal dimming feature is enabled only if the

Extended Function Disable is a logic 0.

Bits 3–5 in the Control Register provide internal brightness

control. These bits are inter-preted 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 3–5 also

vary the average value of IDD . IDD can be speci ed at any

brightness level as shown in Table 1.

– Display Blanked by BL

– Display ON

– Display Blanked by BL.

Individual Characters “ON”

based on “1” being stored in DBDn

– Display Blanked by MB

– Display Blanked by MB.

Individual characters “ON”

based on “1” being stored in DBDn

– Display Blanked by BL

– Display ON

EFD MB DBDn BL

0 0 0 0

0 0 X 1

0 X 1 0

0 1 0 X

0 1 1 1

1 X X 0

1 X X 1

The inputs to the CMOS IC are protected against static

discharge and input current latchup. How ever, for best

results standard CMOS handling precautions should be

used. Prior to use, the HDLX-3416 should be stored 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

since they are prone to static charge build-up.

Input current latchup is caused when the CMOS inputs are

sub jected either to a voltage below ground (Vin < ground)

or to a voltage 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 applied to the inputs until VDD has been

applied to the display.Transient input voltages should

be eliminated.

Soldering and Post Solder Cleaning Instructions for the

HDLX-3416

The HDLX-3416 may be hand soldered or wave soldered

with SN63 solder. When hand solder ing it is recommend-

ed that an electronically temperature con trolled and

securely grounded soldering iron be used. For best results,

the iron tip temperature should be set at 315°C (600°F).

For wave soldering, a rosin-based RMA  ux can be used.

The solder wave temperature should be set at 245°C ± 5°C

(473°F±9°F), and dwell in the wave should be set between

1½ to 3 seconds for optimum soldering. The preheat tem-

perature should not exceed 110°C (230°F) 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 enhance ment is to provide good

read abil ity in the end user’s ambient lighting conditions.

The concept is to employ both luminance and chromi-

nance contrast techniques. These enhance readability by

having the OFF-dots blend into the display background

and the ON-dots vividly stand out against the same back-

ground. For addi tional information on contrast enhance-

ment, see Application Note 1015.

Figure 4. Intensity modulation control using an astable multivibrator

(reprinted with permission from Electronics magazine, Sept. 19, 1974, V

NU Business pub. Inc.).

Figure 4 shows a circuit designed to dim the display from

98% to 2% by pulse width modulating the BL input. A log-

arithmic or a linear potentiometer may be used to adjust

the display intensity. However, a logarithmic potentio-

meter 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 fre quencies may cause the display

to  icker.

Extended Function Disable

Extended Function Disable (bit D6 of the Control Register)

disables the extended blanking and dimming functions in

the HDLX-3416. 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.

Mechanical and Electrical Considerations

The HDLX-3416 is a 22 pin DIP package that can be stacked

horizontally and vertically to create arrays of any size. The

display is designed to operate continuously from -40°C to

+85°C for all possible input conditions.

The HDLX-3416 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. Back ll epoxy environmentally seals the

display package. This package construc tion makes the

display highly tolerant to temperature cycling and allows

wave soldering.

+ VDD

555

(PIN 18)

10 kHz

OUTPUT

1 k

250 k

LOG

400 pF

1 k

1N914

For product information and a complete list of distributors, please go to our web site: www.avagotech.com

Avago, Avago Technologies, and the A logo are trademarks of Avago Technologies in the United States and other countries.

AV02-3642EN - June 20, 2012

Intensity Bin Limits

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 speci ed in Optical Characteristic table.

Color Bin Limits

Color Range (nm)

Color Bin Min. Max.

Green 1 576.0 580.0

2 573.0 577.0

3 570.0 574.0

4 567.0 571.5

Yellow 3 581.5 585.0

4 584.0 587.5

5 586.5 590.0

6 589.0 592.5

Note:

Test conditions as speci ed in Optical Characteristic table.