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SX8663 датащи(PDF) 26 Page - Semtech Corporation |
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SX8663 датащи(HTML) 26 Page - Semtech Corporation |
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26 / 64 page ![]() ADVANCED COMMUNICATIONS & SENSING Rev5 4 th August 2011 © 2011 Semtech Corp. www.semtech.com 26 SX8663 Capacitive Button Matrix (up to 36) and Proximity Controller with Individual LED Drivers and Buzzer Output Figure 28 GPO OFF transition (LED fade out), normal polarity, (a) linear, (b) logarithmic Figure 29 GPO OFF transition (LED fade out), inverted polarity, (a) linear, (b) logarithmic Please note that standard high/low logic signals are just a specific case of GPO mode and can also be generated simply by setting inc/dec time to 0 (i.e. OFF) and programming intensity OFF/ON to 0x00 and 0xFF. 3.15.2 Fading Modes The SX8663 supports two different fading modes, namely Single and Continuous. These fading modes can be configured for each GPIO individually. Please see 5.7 “GPIO Parameters” for more information on how to configure this feature. i) Single Fading Mode: The GPO pin fades in when the associated button is touched and it fades out when it is released. This is shown in Figure 30 fading-in OFF intensity ON intensity delay_off fading-out OFF intensity ON OFF OFF Figure 30 Single Fading Mode ii) Continuous Fading Mode: |
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