sx8636 Semtech Corporation, sx8636 Datasheet - Page 26

• Manufacturer Part Number: sx8636
• Description: Low Power, Capacitive Button Touch Controller 8 Sensors With Enhanced Led Drivers And Proximity Sensing
• Manufacturer: Semtech Corporation

SX8636
Low Power, Capacitive Button Touch Controller (8 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 27
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 28 and Figure 29).
GPO OFF transition (LED fade out), normal polarity, (a) linear, (b) logarithmic
Figure 28
GPO OFF transition (LED fade out), inverted polarity, (a) linear, (b) logarithmic
Figure 29
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_5, September 10
© 2010 Semtech Corp.
www.semtech.com
26