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AT42QT2100 Datasheet(PDF) 31 Page - ATMEL Corporation |
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AT42QT2100 Datasheet(HTML) 31 Page - ATMEL Corporation |
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31 / 44 page  31 AT42QT2100 [DATASHEET] 9554E–AT42–01/13 6.3 AC Specifications 6.4 DC Specifications Vdd = 5.0V, Cs keys = 4.7 nF, Cs slider/wheel = 15 nF; circuit of Figure 1-1 Parameter Description Min Typ Max Units Notes Tsu Start-up to SPI time – 50 60 ms From cold start Trc Recalibration time – 300 – ms Depends on ground loading of electrodes and Cs selection Fc Burst center frequency – 100 80 – kHz Spread spectrum disabled Spread spectrum enabled Fm Burst modulation, percent – 15 – % Total deviation Tpc Sample pulse duration – 2.66 5.85 – µs Spread spectrum disabled Spread spectrum enabled Tbd Acquire burst duration – 20 25 – ms Spread spectrum disabled Spread spectrum enabled (Total for all 3 acquire burst groups) Tdf6 Response time – Free Run mode, DI 6 samples – 120 – ms Spread spectrum disabled Tdf2 Response time – Free Run mode, DI 2 samples – 40 – ms Spread spectrum disabled Tdl Response time – LP mode – 280 – ms LP Mode 2, DI = six counts Tdr Release time – all modes – 40 – ms End of touch Vdd = 5.0V, Cs keys = 4.7 nF, Cs slider/wheel = 15 nF; circuit of Figure 1-1 Parameter Description Min Typ Max Units Notes Vil Low input logic level 0 – 0.3 × Vdd V Vhl High input logic level 0.7 × Vdd – Vdd V Vol Low output voltage – – 0.5 V 7mA sink Voh High output voltage Vdd–0.5 – – bits 2.5 mA source Iil Input leakage current – – ±1 µA Ar Acquisition resolution – 14 – bits Trst External reset low pulse width 2 – – µs |
Similar Part No. - AT42QT2100_14 |
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Similar Description - AT42QT2100_14 |
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