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MTCH6301-I/ML датащи(PDF) 9 Page - Microchip Technology |
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MTCH6301-I/ML датащи(HTML) 9 Page - Microchip Technology |
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9 / 32 page ![]() 2012 Microchip Technology Inc. DS41663A-page 9 MTCH6301 PROJECTED CAPACITIVE TOUCH CONTROLLER 4.4 Example Custom Application Layout An example 4-channel RX/11-channel TX sensor is shown in Figure 4-3. In addition to using a completely modified pin layout, this example differs from the default configuration by also having the TX axis along the bottom (X) and RX axis along the side (Y). Note that some RX pins are used as TX lines in this example. FIGURE 4-3: NON-STANDARD LAYOUT EXAMPLE Using the scaling coefficient table generates the values displayed in Table 4-3. The FLIPSTATE register, using Figure 4-2, should be set to 0b111, or 0x7, for this particular example. Sensor Line MTCH63001 Pin Map ID TX 0TX11 16 1TX17 31 2TX16 32 3TX15 33 4TX14 34 5RX12 21 6RX11 22 7TX13 8 8TX12 5 9RX10 23 10 RX9 24 RX 0RX5 10 1RX6 9 2RX7 1 3RX8 0 MTCH6301 TX3 TX2 TX1 TX0 VSS VDD RX0 RX1 RX2 RX3 RX4 TX15 TX16 TX17 SDA TX14 VSS VCAP INT N/C RX12 RX11 TX0 TX10 SENSOR The Pin Map arrays for this particular setup are as follows (arrays are shown as organized in memory): RXPinMap: {10,9,1,0} TXPinMap: {16,31,32,33,34,21,22,8,5,23,24} TABLE 4-3: CUSTOM APPLICATION SCALING COEFFICIENTS Axis Channels Scaling Coefficient Maximum Output RX 4 65535 [0-3071] TX 11 26214 [0-4095] |
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