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AR1011-I/SS датащи(PDF) 13 Page - Microchip Technology |
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AR1011-I/SS датащи(HTML) 13 Page - Microchip Technology |
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13 / 70 page ![]() 2009-2012 Microchip Technology Inc. Preliminary DS41393B-page 13 AR1000 SERIES RESISTIVE TOUCH SCREEN CONTROLLER 3.4 5-Wire Touch Sensor Interface Sensor tail pinouts can vary by manufacturer and part number. Ensure sensor tail pins for one pair of diagonally related sensor corners are connected to the controller’s X-/X+ pins and the tail pins for the other pair of diagonally related corners are connected to the controller’s Y-/Y+ pins. The controller’s X-/X+ and Y-/Y+ pin pairs do not need to connect to a specific sensor axis. The orientation of controller pins X- and X+ to the two selected diagonal sensor corners is not important. Likewise, the orientation of controller pins Y- and Y+ to the other two selected diagonal sensor corners is not important. The sensor tail pin connected to its top layer must be connected to the controller’s 5WSX- pin. Connections to a 5-wire touch sensor are shown in Figure 3-3 below. FIGURE 3-3: 5-WIRE TOUCH SENSOR INTERFACE Tie unused controller pins SX+, SY-, and SY+ to VSS. See “Section 3.8 “ESD Considerations” and Section 3.9 “Noise Considerations” for important information regarding the capacitance of the controller schematic hardware. |
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