sx8635 Semtech Corporation, sx8635 Datasheet - Page 28
sx8635
Manufacturer Part Number
sx8635
Description
Low Power, Capacitive Button And Wheel Touch Controller 12 Sensors With Enhanced Led Drivers And Proximity Sensing
Manufacturer
Semtech Corporation
Datasheet
1.SX8635.pdf
(81 pages)
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SX8635
Low Power, Capacitive Button and Wheel Touch Controller
(12 sensors) with Enhanced LED Drivers and Proximity Sensing
ADVANCED COMMUNICATIONS & SENSING
DATASHEET
GPO ON transition (LED fade in), inverted polarity, (a) linear, (b) logarithmic
Figure 32
The fading out (e.g. after a button is released) is identical to the fading in but an additional off delay can be added
before the fading starts (Figure 33 and Figure 34).
GPO OFF transition (LED fade out), normal polarity, (a) linear, (b) logarithmic
Figure 33
GPO OFF transition (LED fade out), inverted polarity, (a) linear, (b) logarithmic
Figure 34
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 (ie OFF) and programming intensity OFF/ON to 0x00 and 0xFF.
Revision 7_8, October 10
© 2010 Semtech Corp.
www.semtech.com
28
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