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SAM4E датащи(PDF) 20 Page - ATMEL Corporation |
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SAM4E датащи(HTML) 20 Page - ATMEL Corporation |
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20 / 40 page ![]() SAM4E-EK Evaluation Kit [USER GUIDE] Atmel-42067C-SAM4E-EK_UserGuide_022016 2 0 20 4.3.16.3 Analog Output The BNC connector CM2 is connected to the DAC port PB14 and provides an external analog output. An on- board 50Ω resistor termination can be enabled by closing jumper J31. A filter can be implemented on this output channel by replacing R88 and C71 with appropriate resistor and capacitor values, depending on the application requirements. Figure 4-18. DAC Output 4.3.17 QTouch Elements QTouch keys consist in a series of sensors formed by the association of a copper area and the capacitive effect of human fingers approaching it. Keys The Atmel SAM4E-EK implements two individual capacitive touch keys (RIGHT, LEFT). Slider A group of channels forms a Slider. A Slider is composed of eight channels for a QTouch acquisition method. Such a sensor is used to detect a linear finger displacement on a sensitive area. A typical implementation is volume control. Figure 4-19. QT_Slider |
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