HDLS-2416 [AVAGO]

Four Character 5.0 mm (0.2 inch) Smart 5x7 Alphanumeric Displays; 四个字符5.0毫米( 0.2英寸)智能5x7个字母数字显示器
HDLS-2416
型号: HDLS-2416
厂家: AVAGO TECHNOLOGIES LIMITED    AVAGO TECHNOLOGIES LIMITED
描述:

Four Character 5.0 mm (0.2 inch) Smart 5x7 Alphanumeric Displays
四个字符5.0毫米( 0.2英寸)智能5x7个字母数字显示器

显示器 光电 驱动
文件: 总12页 (文件大小:234K)
中文:  中文翻译
下载:  下载PDF数据表文档文件
HDLx-2416 Series  
Four Character 5.0 mm (0.2 inch) Smart 5x7  
Alphanumeric Displays  
Data Sheet  
Description  
Features  
These are 5.0 mm (0.2 inch) four character 5 x 7 dot matrix  
displaysdrivenbyanon-boardCMOSIC.Thesedisplaysare  
pin for pin compatible with the HPDL-2416. The IC stores  
and decodes 7 bit ASCII data and displays it using a 5 x 7  
font. Multiplexingcircuitry, anddriversarealsopartofthe  
IC.TheIChasfastsetupandholdtimeswhichmakesiteasy  
to interface to a microprocessor.  
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 AlGaAs versions  
Wide operating temperature range  
-40°C to +85°C  
Excellent ESD protection  
Wide viewing angle (50° typ.)  
Absolute Maximum Ratings  
Supply Voltage, VDD to Ground[1]  
Input Voltage, Any Pin to Ground  
Free Air Operating Temperature Range, TA  
Storage Temperature, TS  
-0.5 V to 7.0 V  
-0.5 V to VDD + 0.5 V  
-40°C to +85°C  
-40°C to 100°C  
+150°C  
CMOS IC Junction Temperature, TJ (IC)  
Relative Humidity (non-condensing) at 65°C  
85%  
Soldering Temperature [1.59 mm (0.063 in.) Below Body]  
Solder Dipping  
Wave Soldering  
260°C for 5 secs  
250°C for 3 secs  
ESD Protection, R = 1.5 kΩ, C = 100 pF  
VZ = 2 kV (each pin)  
Note:  
1. Maximum Voltage is with no LEDs illuminated.  
Devices:  
AlGaAs Red  
HDLS-2416  
HDLU-2416  
High Efficiency Red  
HDLO-2416  
Orange  
Yellow  
Green  
HDLA-2416  
HDLY-2416  
HDLG-2416  
HDLG-2416-FG000  
HDLO-2416-DE000  
ESD WARNING: Standard CMOS handling precautions should be observed with the HDLX-2416.  
The address and data inputs can be directly connected to  
the microprocessor address and data buses.  
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  
3-5) 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.  
The HDLX-2416 has several enhancements over the HPDL-  
2416. These features include an expanded character set,  
internal 8 level dimming control, external dimming capa-  
bility, 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.  
Package Dimensions  
25.15  
(0.990)  
0.38  
(0.015)  
REF.  
3.05  
(0.120)  
0.25 0.13  
TYP.  
6.35  
(0.250)  
TYP.  
(0.010 0.005)  
10.03  
(0.395)  
15.24  
(0.600)  
10.16  
(0.400)  
5.08  
(0.200)  
REF.  
20.07  
(0.790)  
IMAGE PLANE  
PIN 1 IDENTIFIER  
3.43  
1.52  
2.41  
REF.  
TYP.  
(0.095)  
(0.060)  
(0.135)  
PART NUMBER  
DATE CODE (YEAR, WEEK)  
LUMINOUS INTENSITY  
COLOR BIN (3)  
6.60  
(0.260)  
HDLX-2416  
YYWW  
X Z  
4.06  
(0.160)  
REF.  
NOTES:  
1. UNLESS OTHERWISE SPECIFIED, THE TOLERANCE  
ON ALL DIMENSIONS IS 0.254 mm ( 0.010).  
0.51 0.13  
(0.020 0.005)  
TYP.  
2. ALL DIMENSIONS ARE IN MILLIMETERS (INCHES).  
3. FOR YELLOW AND GREEN DISPLAYS ONLY.  
2.41  
(0.095)  
2.54  
TYP.  
(0.100)  
Pin Numbering and Location  
Pin No. Function  
Pin No. Function  
1
2
3
4
5
6
7
8
9
CE1 Chip Enable  
10  
11  
12  
13  
14  
15  
16  
17  
18  
GND  
CE1  
CE2  
CLR  
CUE  
CU  
WR  
A1  
BL  
1
2
3
4
5
6
7
8
9
18  
17  
16  
15  
14  
13  
12  
11  
10  
CE2 Chip Enable  
CLR Cle ar  
D0 Data Input  
D1 Data Input  
D2 Data Input  
D3 Data Input  
D6 Data Input  
D5 Data Input  
D4 Data Input  
BL Display Blank  
D4  
D5  
D6  
D3  
D2  
D1  
D0  
CUE Cursor Enable  
CU Cursor Select  
WR Write  
A0  
VDD  
A1 Address Input  
A0 Address Input  
VDD  
GND  
2
Character Set  
D0  
D1  
D2  
D3  
0
0
0
0
0
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
ASCII  
CODE  
D6 D5 D4 HEX  
0
0
0
0
1
0
0
1
0
0
1
1
0
1
2
3
1
1
0
0
0
1
4
5
1
1
1
1
0
1
6
7
NOTES: 1 = HIGH LEVEL  
0 = LOW LEVEL  
3
Recommended Operating Conditions  
Parameter  
Symbol  
Min.  
Typ.  
Max.  
Unit  
Supply Voltage  
VDD  
4.5  
5.0  
5.5  
V
Electrical Characteristics over Operating Temperature Range  
4.5 < V < 5.5 V (unless otherwise specified)  
DD  
All Devices  
[1]  
25°C  
Parameter  
IDD Blank  
Symbol  
IDD (blnk)  
II  
Min.  
Typ.  
Max.  
Max.  
4.0  
Units  
mA  
µA  
Test Conditions  
1.0  
All Digits Blanked  
Input Current  
-40  
10  
VIN = 0 V to VDD  
VDD = 5.0 V  
Input Voltage High  
Input Voltage Low  
VIH  
VIL  
2.0  
VDD  
0.8  
V
V
GND  
HDLO/HDLA/HDLY/HDLG-2416  
Parameter  
[1]  
25°C  
Symbol  
Min.  
Typ.  
Max.  
Max.  
Units  
Test Conditions  
IDD 4 digits  
IDD(#)  
110  
135  
160  
mA  
“#ON in All  
Four Locations  
20 Dots/Character[2, 3]  
IDD Cursor All  
Dots ON @ 50%  
IDD (CU)  
92  
110  
135  
mA  
Cursor ON in All  
Four Locations  
HDLS/HDLU-2416  
[1]  
25°C  
Part Number  
HDLS-2416  
HDLU-2416  
HDLS-2416  
HDLU-2416  
Parameter  
Symbol  
Typ.  
125  
34  
Max.  
146  
42  
Max.  
180  
52  
Units  
Test Conditions  
IDD 4 digits  
20 dots/character[2,3]  
IDD(#)  
mA  
Four “#ON in All  
Four Locations  
IDD Cursor all dots  
ON @ 50%  
IDD(CU)  
105  
29  
124  
36  
154  
45  
mA  
Four Cursors ON in  
All Four Locations  
Notes:  
1. V = 5.0 V.  
DD  
2. Average I measured at full brightness. Peak I = 28/15 x Average I (#).  
DD  
DD  
DD  
3. I (#) max. = 135 mA for HDLO/HDLA/HDLY/HDLG-2416, 146 mA for HDLS-2416, and 42 mA for HDLU-2416 at default brightness, 150°C IC  
DD  
junction temperature and V = 5.5 V.  
DD  
4
[1]  
Optical Characteristics at 25°C  
= 5.0 V at Full Brightness  
V
DD  
HDLS/HDLU-2416  
Part Number  
HDLS-2416  
HDLU-2416  
All  
Parameter  
Symbol  
Min.  
4.0  
Typ.  
12.7  
3.1  
Units Test Conditions  
Average Luminous Intensity per  
Digit, Character Average  
IV  
mcd  
mcd  
nm  
‘’*’Illuminated in All Four  
Digits, 19 Dots ON per Digit  
1.2  
Peak Wavelength  
lPEAK  
ld  
645  
637  
Dominant Wavelength[2]  
nm  
HDLO-2416  
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  
Peak Wavelength  
lPEAK  
ld  
635  
626  
nm  
nm  
Dominant Wavelength[2]  
HDLA-2416  
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  
Peak Wavelength  
lPEAK  
ld  
600  
602  
nm  
nm  
Dominant Wavelength[2]  
HDLY-2416  
Parameter  
Symbol  
Min.  
Typ.  
Units  
Test Conditions  
Average Luminous Intensity per  
Digit, Character Average  
IV  
1.2  
3.7  
mcd  
‘’*’Illuminated in All Four Digits.  
19 Dots ON  
Peak Wavelength  
lPEAK  
ld  
583  
585  
nm  
nm  
Dominant Wavelength[2]  
HDLG-2416  
Parameter  
Symbol  
Min.  
Typ.  
Units  
Test Conditions  
Average Luminous Intensity per  
Digit, Character Average  
IV  
1.2  
5.6  
mcd  
‘’*’Illuminated in All Four Digits.  
19 Dots ON  
Peak Wavelength  
lPEAK  
ld  
568  
574  
nm  
nm  
Dominant Wavelength[2]  
Notes:  
1. Refers to the initial case temperature of the device immediately prior to the light measurement.  
2. Dominant wavelength, l , is derived from the CIE chromaticity diagram, and represents the single wavelength which defines the color of the  
d
device.  
5
AC Timing Characteristics over Operating Temperature Range at V = 4.5 V  
DD  
Parameter  
Symbol  
tAS  
Min  
10  
40  
50  
40  
0
Units  
ns  
Address Setup  
Address Hold  
Data Setup  
tAH  
ns  
tDS  
ns  
Data Hold  
tDH  
ns  
Chip Enable Setup  
Chip Enable Hold  
Write Time  
tCES  
tCEH  
tW  
ns  
0
ns  
75  
10  
1
ns  
Clear  
tCLR  
tCLRD  
µs  
Clear Disable  
µs  
Timing Diagram  
Enlarged Character Font  
2.0 V  
0.8 V  
3.43 (0.135)  
CE  
CE  
1
0.80 (0.031)  
2
TYP.  
t
t
CEH  
CES  
2.0 V  
0.8 V  
A
– A , CU  
1
0
t
t
AH  
AS  
5.08  
(0.200)  
2.0 V  
0.8 V  
WR  
t
W
2.0 V  
0.8 V  
D
– D  
6
0
0.25 (0.010)  
TYP.  
t
t
DH  
DS  
0.80 (0.031)  
TYP.  
t
t
CLRD  
CLR  
Notes:  
2.0 V  
0.8 V  
1. Unless otherwise specified, the tolerance on all  
dimensions is ± 0.254 mm (0.010 inch).  
2. Dimensions are in mm (inches).  
CLR  
6
Electrical Description  
Pin Function  
Description  
Chip Enable (CE and CE and CE must be a logic 0 to write to the display.  
1
1
2
CE , pins 1 and 2)  
2
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 displays the ASCII or  
the Cursor memory. (1 = Cursor, 0 = ASCII).  
Cursor Select  
(CU, pin 5)  
CU determines whether data is stored in the ASCII RAM  
or the Attribute RAM/Control Register. (1 = ASCII, 0 = Attribute RAM/Control Register).  
Write (WR, pin 6)  
Address Inputs  
WR must be a logic 0 to store data in the display.  
A -A selects a specific location in the display memory.  
0
1
(A and A ,  
Address 00 accesses the far right display location.  
Address 11 accesses the far left location.  
1
0
Pins 8 and 7)  
Data Inputs  
D -D are used to specify the input data for the  
display.  
0
6
(D -D , Pins 11-17)  
0
6
V
(pin 9)  
V
DD  
is the positive power supply input.  
DD  
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.  
Display Internal Block Diagram  
Figure 1 shows the HDLX-2416 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 synchronize the decoding and driving of  
four 5 x 7 dot matrix displays.  
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.  
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 fields  
within the Control Register provide an 8 level brightness  
control, master blank, and extended functions disable.  
7
CHARACTER/CURSOR  
MULTIPLEXER  
CHARACTER RAM  
ASCII DECODER  
2
7
7
WRITE  
DATA  
OUT  
CHARACTER  
A – A  
0
1
ADDRESS  
SELECT  
5
COLUMN  
DATA  
0
1
DATA IN  
D – D  
0
6
CE  
CE  
1
CHARACTER/  
CURSOR  
MULTIPLEXER  
2
WRITE  
WR  
CU  
(4 x 7)  
CLR  
2
READ  
ADDRESS  
3
ROW  
SELECT  
5
CURSOR  
CHARACTER  
SELECT  
CLR  
ATTRIBUTE RAM  
DIGIT CURSOR  
CUE  
DC  
n
D
D
0
1
1
DIGIT BLANK  
DISABLE  
A – A  
WRITE ADDRESS  
WRITE  
0
(2 x 4)  
2
READ ADDRESS  
CLR  
CLR  
COLUMN  
DRIVERS  
BL  
CONTROL REGISTER  
ROW  
DRIVERS  
MB  
EFD  
MASTER  
BLANK  
D
2
ROW  
SELECT  
DISPLAY  
DBD  
n
BLANK  
3
BRIGHTNESS  
LEVELS  
EFD  
D – D  
3
5
6
EFD  
EXTENDED  
FUNCTIONS  
DISPLAY  
D
CE  
CE  
1
2
1 x 5  
3
WRITE  
WR  
CU  
CLR  
CLR  
3
DIGITAL  
DUTY  
CONTROL  
4 (LSBs)  
OSC  
+ 32  
+ 7  
2 (MSBs)  
Figure 1. Internal block diagram.  
8
Display Clear  
Cursor  
Data stored in the Character RAM, Control Register, and When cursor enable (CUE) is a logic 1, a cursor will be  
Attribute RAM will be cleared if the clear (CLR) is held displayed in all digit locations where a logic 1 has been  
low for a minimum of 10 µs. Note that the display will be stored in the Digit Cursor memory in the Attribute RAM.  
cleared regardless of the state of the chip enables (CE , The cursor consists of all 35 dots ON at half brightness.  
1
CE ). After the display is cleared, the ASCII code for a space A flashing cursor can be displayed by pulsing CUE. When  
2
(20hex) is loaded into all character RAM locations and CUE is a logic 0, the ASCII data stored in the Character  
00hex is loaded into all Attribute RAM/Control Register RAM will be displayed regardless of the Digit Cursor bits.  
memory locations.  
Blanking  
Data Entry  
Blanking of the display is controlled through the BL input,  
Figure 2 shows a truth table for the HDLX-2416 display. the Control Register and Attribute RAM. The user can  
Setting the chip enables (CE , CE ) to logic 0 and the achieve a variety of functions by using these controls  
1
2
cursor select (CU) to logic 1 will enable ASCII data in different combinations, such as full hardware display  
loading. When cursor select (CU) is set to logic 0, data blank, software blank, blanking of individual characters,  
will be loaded into the Control Register and Attribute and synchronized flashing of individual characters or  
RAM. Address inputs A -A are used to select the digit entire display (by strobing the blank input). All of these  
0
1
location in the display. Data inputs D -D are used to load blanking modes affect only the output drivers, main-  
0
6
information into the display. Data will be latched into taining the contents and write capability of the internal  
the display on the rising edge of the WR signal. D -D , RAMs and Control Register, so that normal loading of  
0
6
A -A , CE , CE , and CU must be held stable during the RAMs and Control Register can take place even with the  
0
1
1
2
write cycle to ensure that correct data is stored into the display blanked.  
display. Data can be loaded into the display in any order.  
Note that when A and A are logic 0, data is stored in the  
0
1
right most display location.  
CUE  
0
BL  
1
CLR  
1
CE  
CE  
WR  
X
CU  
X
A
A
D
D
D
D
D
D
D
0
Function  
1
2
1
0
6
5
4
3
2
1
Display ASCII  
Display Stored Cursor  
Reset RAMs  
1
1
1
X
X
X
X
X
X
X
X
X
X
X
X
X
0
Blank Display but do not reset  
RAMS and Control Register  
X
0
1
Extended  
Functions  
Disable  
Intensity  
Control  
Master  
Blank  
Digit  
Blank  
Disable 0  
Digit  
Cursor  
0
Write to Attribute RAM  
and Control Register  
0
0
0
0
0
1
0 =  
Enable  
000 = 100%*  
001 = 60%  
010 = 40%  
011 = 27%  
100 = 17%  
101 = 10%  
110 = 7%  
0 =  
Display  
ON  
Digit  
Blank  
Disable 1  
Digit  
Cursor  
1
DBD = 0, Allows Digit n to be  
n
blanked  
D -D  
1
5
DBD = 1 Prevents Digit n from  
n
being blanked.  
X
X
1
0
0
0
1 =  
1 =  
Display  
Blanked  
Digit  
Blank  
Disable 2  
Digit  
Cursor  
2
0
0
1
1
0
1
Disable  
D -D  
DC = 0 Removes cursor from  
n
Digit n  
1
5
111 = 3%  
D
0
Digiit  
Blank  
Disable 3  
Digit  
Cursor  
3
Always  
Enabled  
DC = 1 Stores cursor at Digit n  
n
1
1
1
1
0
0
1
1
0
1
0
1
Digit 0 ASCII Data (Right Most Character)  
Digit 1 ASCII Data  
X
X
X
X
1
1
0
0
0
Write to Character RAM  
Digit 2 ASCII Data  
Digit 3 ASCII Data (Left Most Character)  
1
X
X
X
1
X
X
X
1
X
X
X
X
X
X
X
X
X
X
No Change  
0 = Logic 0; 1 = Logic 1; X = Do Not Care; * 000 = 27% for HDLU-2416  
Figure 2. Display truth table.  
9
Figure 3 shows how the Extended Function Disable  
(bit D of the Control Register), Master Blank (bit D of  
Dimming  
6
2
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 display.  
The internal dimming feature is enabled only if the  
Extended Function Disable is a logic 0.  
the Control Register), Digit Blank Disable (bit D of the  
1
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 synchronization with the BL input.  
Bits 3-5 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 3-5 also  
vary the average value of I . I can be specified at any  
brightness level as shown in Table 1.  
DD DD  
EFD  
0
MB  
0
DBD  
0
BL  
0
n
Display Blanked by BL  
Display ON  
0
0
0
X
1
1
0
Display Blanked by BL. Individual characters  
X
“ONbased on “1being stored in DBD  
n
0
0
1
1
0
1
X
1
Display Blanked by MB  
Display Blanked by MB. Individual characters  
“ONbased on “1being stored in DBD  
n
1
1
X
X
X
X
0
1
Display Blanked by BL  
Display ON  
Figure 3. Display blanking truth table.  
Table 1. Current Requirements at Different Brightness Levels  
Symbol  
D
0
0
0
0
1
1
1
1
D
0
0
1
1
0
0
1
1
D
0
1
0
1
0
1
0
1
Brightness  
100%  
60%  
25°C Typ.  
25°C Max.  
Max. over Temp.  
Units  
mA  
mA  
mA  
mA  
mA  
mA  
mA  
mA  
5
4
3
IDD(#)  
110  
66  
45  
30  
20  
12  
9
130  
79  
53  
37  
24  
15  
11  
6
160  
98  
66  
46  
31  
20  
15  
9
40%  
27%  
17%  
10%  
7%  
3%  
4
10  
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-2416 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.  
+ V  
DD  
1 k  
8
4
7
6
3
BL  
(PIN 18)  
10 kHz  
OUTPUT  
1 k  
1N914  
555  
Input current latchup is caused when the CMOS inputs  
are subjected either to a voltage below ground (V  
<
in  
250 k  
LOG  
ground) or to a voltage higher than V (V > V ) and  
when a high current is forced into the input. To prevent  
input current latchup and ESD damage, unused inputs  
DD in  
DD  
2
1
400 pF  
should be connected either to ground or to V . Voltages  
DD  
should not be applied to the inputs until V has been  
DD  
applied to the display. Transient input voltages should  
be eliminated.  
Figure 4. Intensity modulation control using an astable multivibrator  
(reprinted with permission from Electronics magazine, Sept. 19, 1974,  
VNU Business pub. Inc.)  
Soldering and Post Solder Cleaning Instructions for the  
HDLX-2416  
Figure 4 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 logarithmic po-  
tentiometer 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.  
The HDLX-2416 may be hand soldered or wave soldered  
with SN63 solder. When hand soldering it is recom-  
mended that an electronically temperature controlled  
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 flux 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 1 1/2 to 3 seconds for optimum soldering. The  
preheat temperature should not exceed 110°C (230°F) as  
measured on the solder side of the PC board.  
Extended Function Disable  
Extended Function Disable (bit D of the Control Register)  
6
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.  
For further information on soldering and post solder  
cleaning, see Application Note 1027, Soldering LED Com-  
ponents.  
Contrast Enhancement  
The objective of contrast enhancement is to provide good  
readability 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 additional information on contrast enhance-  
ment, see Application Note 1015.  
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 -40 C to +85 C 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 construction makes the  
display highly tolerant to temperature cycling and allows  
wave soldering.  
Intensity Bin Limits for HDLS-2416  
Intensity Range (mcd)  
Intensity Bin Limits for HDLX-2416  
Intensity Range (mcd)  
Color Bin Limits  
Color Range (nm)  
Bin  
E
Min.  
3.97  
Max.  
6.79  
Bin  
A
B
Min.  
1.20  
1.25  
2.02  
2.83  
3.97  
5.55  
7.78  
Max.  
1.77  
2.47  
3.46  
4.85  
6.79  
9.50  
13.30  
Color  
Yellow  
Bin  
3
Min.  
Max.  
581.5  
584.0  
586.5  
589.0  
576.0  
573.0  
570.0  
567.0  
585.0  
587.5  
590.0  
592.5  
580.0  
577.0  
574.0  
571.5  
F
5.55  
9.50  
4
G
H
I
7.78  
13.30  
18.62  
26.07  
36.49  
C
5
10.88  
15.24  
21.33  
D
E
6
Green  
1
J
F
2
G
3
Note:  
4
Test conditions as specified in Optical Charac-  
teristic table.  
Note:  
Test conditions as specified in Optical Charac-  
teristic table.  
Note:  
Test conditions as specified in Optical Charac-  
teristic table.  
For product information and a complete list of distributors, please go to our website: www.avagotech.com  
Avago, Avago Technologies, and the A logo are trademarks of Avago Technologies in the United States and other countries.  
Data subject to change. Copyright © 2005-2013 Avago Technologies. All rights reserved. Obsoletes 5989-3190EN  
AV02-0662EN - February 26, 2013  

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