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SX8661 датащи(PDF) 32 Page - Semtech Corporation

номер детали SX8661
подробное описание детали  Low Power, Capacitive Button Touch and Proximity Controller
PDF  88 Pages
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производитель  SEMTECH [Semtech Corporation]
домашняя страница  http://www.semtech.com
Logo SEMTECH - Semtech Corporation

SX8661 датащи(HTML) 32 Page - Semtech Corporation

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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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