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Transcript 
2.3 Inch 8x8
Dot-Matrix Display
數位電路實驗
TA: 吳柏辰
Author: Trumen
Outline
• Introduction to Dot-Matrix Display
• Product Specification
• Circuit Connection Results
2
Introduction to
Dot-Matrix Display
3
Introduction to
Dot-Matrix Display
• A dot-matrix display is a display device used to
display information on machines, clocks and
many other devices requiring a simple display
device of limited resolution.
4
LED Matrix
• It consists of a 2-D diode matrix with their
cathodes joined in columns and their anodes
joined in rows (or vice versa).
• By controlling the flow of electricity through
each row and column pair it is possible to
control each LED individually.
5
Product Specification
6
Model No: CSM-88261EG
• Descriptions:
• 2.3Inch 8X8 Dot-Matrix Display
• Dot Pitch 7.62mm
• CSM-88261: Column Cathode, Row Anode
• Emitting Color: Orange & Yellow Green
7
Internal Circuit Diagrams
||||||||||||
24 23 22 21 20 19 18 17 16 15 14 13
Pin number
01 02 03 04 05 06 07 08 09 10 11 12
||||||||||||
CSM-88261EG
CSM-88261EG
8
Absolute Maximum Rating (1/2)
• Orange (Ta=25°C)
Parameter
Symbol
Rating
Unit
Power Dissipation Per Dice
PAD
70
mW
Continuous Forward Current
Per Dice
IAF
25
mA
Peak Current Per Dice(duty
cycle 1/10, 1kHz)
IPF
90
mA
Reverse Voltage Per Dice
VR
5
V
9
Absolute Maximum Rating (2/2)
• Yellow Green (Ta=25°C)
Parameter
Symbol
Rating
Unit
Power Dissipation Per Dice
PAD
70
mW
Continuous Forward Current
Per Dice
IAF
25
mA
Peak Current Per Dice(duty
cycle 1/10, 1kHz)
IPF
90
mA
Reverse Voltage Per Dice
VR
5
V
10
Electro-optical Characteristics
• Orange (Ta=25°C)
Parameter
Forward Voltage Per Dot
Symbol Min.
VF
Typ. Max.
2.0
2.8
Unit
Condition
V
IF = 20mA
Unit
Condition
V
IF = 20mA
• Yellow Green (Ta=25°C)
Parameter
Forward Voltage Per Dot
Symbol Min.
VF
☑ HSMC (standard 2.5 V)
☒ GPIO (standard 3.3V)
Typ. Max.
2.1
GPIO
2.8
HSMC
11
Typical Electrical / Optical
Characteristics Curves
• Orange
• Yellow Green
(Ta=25°C)
12
Circuit Connection Results
13
14
15
Demo Video
16
The End.
Any question?
Reference
1. http://en.wikipedia.org/wiki/Dot_matrix
2. http://en.wikipedia.org/wiki/Dot-matrix_display
3. "Product Specification, Model No: CSM88261EG" by China Semiconductor
Corporation, http://www.csctw.com.tw
18
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