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STMPE16M31PX Datasheet(PDF) 7 Page - STMicroelectronics |
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STMPE16M31PX Datasheet(HTML) 7 Page - STMicroelectronics |
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7 / 75 page  STMPE16M31PX Pin assignment Doc ID 17058 Rev 2 7/75 Figure 3. Sample application - notebook multimedia bar Table 3. Limitations on intrinsic capacitance on PCB / flexi PCB(1) 1. For small PCBs, it is possible to operate the device with CRef left unconnected. However, without a small capacitance at this pin, the capacitive sensing operation tends to be noisier. It is recommended that a capacitor of 10 pF to be connected to this pin. Cmax-Cmin (Difference between highest and lowest channel capacitance) Cmax Matching capacitors < 30 pF < 30 pF Not required <3 0 pF > 30 pF, < 60 pF Cref of up to 30 pF required >30pF, <60pF > 30 pF, <60 pF Cref of up to 30 pF required Channel matching capacitance of up to 25 pF required > 60 pF > 60 pF PCB optimization required Obsolete Product(s) - Obsolete Product(s) |
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