Datasheet

8
Figure 2. Display internal block diagram.
Soldering Instructions
The HDLX-1414 is compatible with hand- and wave-solder
processes. The use of a no-clean  ux is recommended.
The polycarbonate lens on these displays is incompatible
with some  uxes and cleaning solutions. It is not rec-
ommended for use with heated Terpene, or solutions
of propylene glycol monomethyl ether and monoetha-
nolamine.
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 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.
CHARACTER RAM ASCII DECODER
WRITE
ADDRESS
A
0
– A
1
2
D
0
– D
6
7
DATA IN
DATA
OUT
7
CHARACTER
SELECT
COLUMN
DATA
5
3
ROW
SELECT
OSC + 32 + 7
ROW
DRIVERS
DISPLAY
COLUMN
DRIVERS
ROW
SELECT
WRITE
(4 x 7)
WR