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AT42QT2100 Datasheet(PDF) 5 Page - ATMEL Corporation |
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AT42QT2100 Datasheet(HTML) 5 Page - ATMEL Corporation |
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5 / 44 page  5 AT42QT2100 [DATASHEET] 9554E–AT42–01/13 1.3 Schematic Figure 1-1. Connection Diagram (32-MLF Package) Important Design Guidelines: The sensitivities of the various sense channels are determined by the values of the respective Cs capacitors (that is, CsB1, CsB7, and so on); these values will require adjustment based on building a prototype product and testing the sensitivity experimentally. Signals DRDY and CHANGE may need pull-down resistors. Re Figure 1-1, check the following sections for the variable component values: Section 3.1 on page 9: Cs capacitors (CsB) Section 3.2 on page 9: Sample resistors (RSNS) Section 3.3 on page 9: Voltage levels SNSKB2 1 SNSB3 2 SNSKB5 9 SNSB5 8 SNSKB7 11 SNSKB4 6 SNSKB3 3 SNSB7 13 SNSKB6 10 SNSB6 12 SNSB1 30 SPREAD 22 SNSKB1 31 DRDY 19 SNSB2 32 SNSB4 7 SNSA2 25 SNSKA1 24 SNSA1 23 CHANGE 20 SCK 17 MISO 16 SNSA3 27 SNSKA3 28 SNSKA2 26 RESET 29 SS 14 MOSI 15 GND Vin Vout Voltage Regulator VCC VDD GND C3 C4 C2 C1 VDD SS MOSI MISO SCK DRDY CHANGE GND QT Key Key B1 QT Key Key B2 QT Key Key B3 QT Key Key B4 QT Key Key B5 QT Key Key B6 QT Key Key B7 RsB1 RsB2 RsB3 RsB4 RsB5 RsB6 RsB7 RsA1 RsA2 RsA3 R2 R3 R4 R5 R1 Ch1 Ch2 Ch3 Wheel/Slider CsB1 CsB2 CsB3 CsB4 CsB5 CsB6 CsB7 CsA1 CsA2 CsA3 |
Similar Part No. - AT42QT2100_14 |
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Similar Description - AT42QT2100_14 |
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