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AT42QT1110-AU Datasheet(PDF) 34 Page - ATMEL Corporation |
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AT42QT1110-AU Datasheet(HTML) 34 Page - ATMEL Corporation |
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34 / 50 page  34 AT42QT1110-MU / AT42QT1110-AU [DATASHEET] 9520J–AT42–05/2013 IN_DETECTn: PWM to output when key n is “In Detect” (where n is 0–6). OUT_DETECTn: PWM to output when key n is “Out of Detect” (where n is 0–7). This PWM is also output if the DETECT output is “disconnected” from the key (that is, “LED_n” in address 17 is set to 0), allowing the host to directly control the PWM output. The values for the “IN_DETECTn” and “OUT_DETECTn” nibbles are listed in Table 7-11. Default IN_DETECTn value: 8 (100% PWM – on) Default OUT_DETECTn value: 0 (0% PWM – off) 7.13 Address 16: LED Detect Hold Time When a key is touched, if the “Detect” outputs and “Key to LED” options are enabled (see Section 7.12 and Section 7.14), the corresponding “Detect” pin will output its “In-Detect” PWM signal. After the key touch is removed, the “Detect” output can be held at the “In-Detect” PWM signal for a time before returning to the “Out of Detect” PWM signal. This allows a reasonable length of time for an LED to be illuminated. The length of this time is controlled by the LED Detect Hold Time. Valid values are in multiples of 16 ms. Default value: 0 (0 ms) Table 7-11. PWM Values Value Meaning 0 0% 1 12.5% 2 25% 3 37.5% 4 50% 5 62.5% 6 75% 7 87.5% 8 100% Table 7-12. LED Detect Hold Time Address Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 16 LED_DETECT_HOLD_TIME |
Similar Part No. - AT42QT1110-AU_14 |
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Similar Description - AT42QT1110-AU_14 |
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