sx8644 Semtech Corporation, sx8644 Datasheet - Page 46

• Manufacturer Part Number: sx8644
• Description: Ultra Low Power, Capacitive Button And Slider Touch Controller 12 Sensors With Enhanced Led Drivers
• Manufacturer: Semtech Corporation

ADVANCED COMMUNICATIONS & SENSING
CapThresh0, CapThresh1, CapThresh2, CapThresh3, CapThresh4, CapThresh5, CapThresh6, CapThresh7,
CapThresh8, CapThresh9, CapThresh10, CapThresh11:
CapPerComp:
Revision 7_3, January 10
For each CAP pin a threshold level can be set individually.
The threshold levels are used by the SX8644 for making touch and release decisions on e.g. touch or no-
touch.
The details are explained in the sections for buttons and slider.
The SX8644 offers a periodic offset compensation for applications which are subject to substantial
environmental changes. The periodic offset compensation is done at a defined interval and only if slider and
buttons are released.
Touch Controller (12 sensors) with Enhanced LED Drivers
© 2009 Semtech Corp.
46
Ultra Low Power, Capacitive Button and Slider
DATASHEET
www.semtech.com
SX8644