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| 型号： | HCMS-2919 |
| 元件分类： | 显示用LED |
| 英文描述： | 5X7 DOT MATRIX DISPLAY, BLUE, 3.71 mm |
| 文件页数： | 6/14页 |
| 文件大小： | 139K |
| 代理商： | HCMS-2919 |
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www.avagotech.com
Avago, Avago Technologies, and the A logo are trademarks of Avago Technologies, Pte. in the United States and other countries.
Data subject to change. Copyright 2006 Avago Technologies Pte. All rights reserved.
AV01-0115EN - May 16, 2006
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 1001101,
the peak current is 73% of full scale (BIT D5 = L, BIT D4
= L) and the PWM is set to 60% duty factor (BIT D3 = H,
BIT D2 = H, BIT D1 = L, BIT D0 = 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 8. The temperature of
the display will also affect the LED brightness as shown
in Figure 8.
Appendix F. Reference Material
Application Note 1027: Soldering LED Components
Application Note 1015: Contrast Enhancement
Techniques for LED Displays
Figure 8. Relative luminous intensity versus ambient
temperature.
0.4
0.5
0.6
0.7
0.8
0.9
1
1.1
1.2
-40
-20
0
20
40
60
80
Ambient Temperature (
o C)
Relative
Luminous
Intensity
(normalized
to
1
at
25C)
相关PDF资料 |
PDF描述 |
|---|---|
| HCMS-31-D-02-01-G | INTERCONNECTION DEVICE |
| HCMS-26-T-02-01-ST8 | INTERCONNECTION DEVICE |
| HCMS-34-D-02-01-M | INTERCONNECTION DEVICE |
| HCMS-10-T-02-01-R | INTERCONNECTION DEVICE |
| HCMS-02-T-02-01-ST3 | INTERCONNECTION DEVICE |
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