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AT42QT2100 Datasheet(PDF) 20 Page - ATMEL Corporation |
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AT42QT2100 Datasheet(HTML) 20 Page - ATMEL Corporation |
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20 / 44 page  20 AT42QT2100 [DATASHEET] 9554E–AT42–01/13 Byte 0 AKS – Three bits used to determine the AKS mode, as shown in Table 5-2 (see Section 4.3.4 on page 15 for further information). SLD – Scrolling device type selection. SLD = 0: Wheel mode (default) SLD = 1: Linear slider mode PROX – This setting is included to ensure compatibility with host drivers designed for the QT1106. Any key may be optimized as a proximity sensor but key 7 should be used in any application where AKS is required, as it can be excluded from AKS by selecting AKS mode 101. Req – Set to 000 to indicate Normal Exchange mode. Byte 1 LP Mode – After each measurement and processing cycle the device goes to sleep for a period, the duration of which is set by the LP mode as per Table 5-3. Table 5-2. AKS Mode AKS Bits AKS Option 000 AKS disabled (default) 001 AKS global: All 7 keys + slider/wheel are in the same group 010 AKS group 1: all keys AKS group 2: slider/wheel 011 AKS group 1: keys 1 – 4 AKS group 2: keys 5 – 7 AKS group 3: slider/wheel 100 AKS group 1: keys 1 – 4 AKS group 2: keys 5 – 7 + slider/wheel 101 AKS group 1: keys 1 – 6 + slider/wheel AKS group 2: key 7 Table 5-3. Sleep/Low Power Modes LP Mode Bits Operating Mode 000 Free run – 0 ms sleep period in each cycle (default): Acquisition and processing carried out continuously with no sleep. This mode has the highest power consumption, but the quickest response. 001 60 ms sleep period in each cycle 010 120 ms sleep period in each cycle 011 240 ms sleep period in each cycle 100 480 ms sleep period in each cycle |
Similar Part No. - AT42QT2100_14 |
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Similar Description - AT42QT2100_14 |
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