HCMS-3906 Avago Technologies US Inc., HCMS-3906 Datasheet - Page 21
![LED DISPLAY 5X7 4CHAR 3.8MM RED](/photos/22/51/225179/4734722_sml.jpg)
HCMS-3906
Manufacturer Part Number
HCMS-3906
Description
LED DISPLAY 5X7 4CHAR 3.8MM RED
Manufacturer
Avago Technologies US Inc.
Series
HCMS-39xxr
Datasheet
1.HCMS-3906.pdf
(22 pages)
Specifications of HCMS-3906
Millicandela Rating
*
Internal Connection
*
Size / Dimension
*
Color
Red
Configuration
*
Voltage - Forward (vf) Typ
*
Package / Case
12-DIP
Display Type
Alphanumeric
Number Of Digits/alpha
4
Digit/alpha Size
0.15" (3.8mm)
Character Format
Dot Matrix
Character Size
3.81mm
Led Color
Red
Luminous Intensity
2.3mcd
No. Of Digits / Alpha
4
Display Area Width
17.78mm
Display Area Height
10.16mm
Number Of Digits
4
Illumination Color
Red
Wavelength
635 nm
Operating Voltage
3.1 V to 5.5 V
Maximum Operating Temperature
+ 85 C
Minimum Operating Temperature
- 40 C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Common Pin
-
Lead Free Status / Rohs Status
Details
Appendix E. Display
Brightness
Two ways have been shown to
control the brightness of this
LED display: setting the peak
current and setting the duty
factor. Both values are set in
Control Word 0. To compute the
resulting display brightness when
both PWM and peak current
control are used, simply multiply
the two relative brightness
factors. For example, if Control
Register 0 holds the word
Figure 10. Relative luminous Intensity versus ambient temperature.
3.0
2.5
2.0
1.5
1.0
0.5
0
-50
AMBIENT TEMPERATURE – °C
0
50
GREEN
RED
1001101, the peak current is
73% of full scale (BIT D
D
60% duty factor (BIT D
BIT D2 = H, BIT D
= H). The resulting brightness is
44% (.73 x .60 = .44) of full
scale.
The temperature of the display
will also affect the LED
brightness as shown in Figure 10.
4
= L) and the PWM is set to
100
1
= L, BIT D
3
5
=L, BIT
= H,
0
Appendix F. Reference
Material
Application Note 1027:
Soldering LED Components
Application Note 1015: Contrast
Enhancement Techniques for
LED Displays