1. 2.3 Inch 8x8 Dot-Matrix Display 數位電路實驗 TA: 吳柏辰 Author: Trumen

2. Outline Introduction to Dot-Matrix Display Product Specification Circuit Connection Results 2

3. Introduction to Dot-Matrix Display 3

4. 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

5. 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

6. Product Specification 6

7. 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

8. Internal Circuit Diagrams 8 CSM-88261EG |||||||||||| 01 02 03 04 05 06 07 08 09 10 11 12 |||||||||||| 24 23 22 21 20 19 18 17 16 15 14 13 CSM-88261EG Pin number frontal view

9. Orange (Ta=25°C) Absolute Maximum Rating (1/2) 9 ParameterSymbolRatingUnit Power Dissipation Per DiceP AD 70mW Continuous Forward Current Per Dice I AF 25mA Peak Current Per Dice(duty cycle 1/10, 1kHz) I PF 90mA Reverse Voltage Per DiceVRVR 5V

10. Yellow Green (Ta=25°C) Absolute Maximum Rating (2/2) 10 ParameterSymbolRatingUnit Power Dissipation Per DiceP AD 70mW Continuous Forward Current Per Dice I AF 25mA Peak Current Per Dice(duty cycle 1/10, 1kHz) I PF 90mA Reverse Voltage Per DiceVRVR 5V

11. Orange (Ta=25°C) Yellow Green (Ta=25°C) Electro-optical Characteristics 11 ParameterSymbolMin.Typ.Max.UnitCondition Forward Voltage Per DotVFVF 2.02.8VI F = 20mA ParameterSymbolMin.Typ.Max.UnitCondition Forward Voltage Per DotVFVF 2.12.8VI F = 20mA ☑ HSMC (standard 2.5 V) ☒ GPIO (standard 3.3V) ☑ HSMC (standard 2.5 V) ☒ GPIO (standard 3.3V) GPIOHSMC

12. Typical Electrical / Optical Characteristics Curves Orange Yellow Green 12 (Ta=25°C)

13. Circuit Connection Results 13

14. 14 01 02 03 04 05 06 07 08 09 10 11 12 24 23 22 21 20 19 18 17 16 15 14 13

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16. Demo Video 16

17. The End. Any question?

18. Reference 1. http://en.wikipedia.org/wiki/Dot_matrix http://en.wikipedia.org/wiki/Dot_matrix 2. http://en.wikipedia.org/wiki/Dot-matrix_display http://en.wikipedia.org/wiki/Dot-matrix_display 3. "Product Specification, Model No: CSM- 88261EG" by China Semiconductor Corporation, http://www.csctw.com.twhttp://www.csctw.com.tw 18