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SX8661 датащи(PDF) 32 Page - Semtech Corporation |
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SX8661 датащи(HTML) 32 Page - Semtech Corporation |
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32 / 88 page ![]() ADVANCED COMMUNICATIONS & SENSING DATASHEET Revision v3.2, January 2011 © 2011 Semtech Corp. www.semtech.com 32 SX8661 Low Power, Capacitive Button Touch and Proximity Controller (8 sensors) with LED Drivers and Analog Output 3.18.2 GPO Dual Reporting GPIOs configured as GPO will operate as digital outputs which can generate both standard low/high logic levels and PWM low/high duty cycles levels. Typical application is LED ON/OFF control. This is the dual reporting mode. The SX8661 offers additionally a triple reporting mode which allows the reporting of proximity by a medium strong LED intensity (section 3.18.5). Transitions between ON and OFF states can be triggered either automatically in Autolight mode or manually by the host. This is illustrated in figures below. Figure 31 LED Control in GPO mode, Autolight OFF Figure 32 LED Control in GPO mode, Autolight ON (mapped to Button) Additionally these transitions can be configured to be done with or without fading following a logarithmic or linear function. This is illustrated in figures below. Figure 33 GPO ON transition (LED fade in), normal polarity, (a) linear, (b) logarithmic Figure 34 GPO ON transition (LED fade in), inverted polarity, (a) linear, (b) logarithmic |
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