sx8643 Semtech Corporation, sx8643 Datasheet - Page 43

• Manufacturer Part Number: sx8643
• Description: Ultra Low Power, Capacitive Button 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_5, February 10
For each CAP pin a threshold level can be set individually.
The threshold levels are used by the SX8643 for making touch and release decisions on e.g. touch or no-
touch.
The details are explained in the sections for buttons.
The SX8643 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 buttons are
released.
© 2010 Semtech Corp.
Ultra Low Power, Capacitive Button Touch Controller
43
(12 sensors) with Enhanced LED Drivers
DATASHEET
www.semtech.com
SX8643