HDLU-1414 Avago Technologies US Inc., HDLU-1414 Datasheet - Page 8

• Manufacturer Part Number: HDLU-1414
• Description: Smart 5 X 7 Dot Matrix LED Display,4-CHARACTER,Red,DIP
• Manufacturer: Avago Technologies US Inc.
• Series: HDLx-1414r

Specifications of HDLU-1414

• Millicandela Rating: *
• Internal Connection: *
• Size / Dimension: 0.70" L x 0.80" W x 0.24" H (17.7mm x 20.1mm x 6.1mm)
• Color: Red
• Configuration: *
• Voltage - Forward (vf) Typ: *
• Package / Case: 12-DIP
• Display Type: Alphanumeric
• Number Of Digits/alpha: 4
• Digit/alpha Size: 0.14" (3.6mm)
• Number Of Digits: 4
• Illumination Color: Red
• Wavelength: 637 nm
• Operating Voltage: 5 V
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Luminous Intensity: 3.1 mcd
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Common Pin: -
• Lead Free Status / Rohs Status: Details

8
Figure 2. Display internal block diagram.
WR
applied to the inputs until V
has been turned on, and high
transient input voltages should
be eliminated.
Soldering Instructions
The HDLX-1414 is compatible
with hand- and wave-solder
processes. The use of a no-clean
flux is recommended.
The polycarbonate lens on these
displays is incompatible with
some fluxes and cleaning
solutions. It is not recommended
A
D
0
0
– A
– D
1
6
2
7
WRITE
ADDRESS
DATA IN
WRITE
CHARACTER RAM
(4 x 7)
DD
OSC
DATA
OUT
for use with heated Terpene, or
solutions of propylene glycol
monomethyl ether and
monoethanolamine.
For further information on
soldering 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 user’s
7
+ 32
3 ROW
CHARACTER
SELECT
SELECT
ASCII DECODER
COLUMN
DATA
+ 7
5
ambient lighting conditions. By
using both luminance
(brightness) and chrominance
(color) contrast techniques, the
ON dots of the display can be
made to stand out against a dark
background.
For further information on
contrast enhancement, see
Application Note 1015, Contrast
Enhancement Techniques for
LED Displays.
ROW
SELECT
DRIVERS
ROW
DRIVERS
COLUMN
DISPLAY