sx8661 Semtech Corporation, sx8661 Datasheet - Page 50

• Manufacturer Part Number: sx8661
• Description: Low Power, Capacitive Button Touch And Proximity Controller 8 Sensors With Led Drivers And Analog Output
• Manufacturer: Semtech Corporation

ADVANCED COMMUNICATIONS & SENSING
CapThresh0, CapThresh1, CapThresh2, CapThresh3, CapThresh4, CapThresh5, CapThresh6, CapThresh7:
CapPerComp:
CapProxEnable:
Revision v3.2, January 2011
For each CAP pin a threshold level can be set individually.
The threshold levels are used by the SX8661 for making touch and release decisions.
The details are explained in the sections for buttons.
The SX8661 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.
The SX8661 is intended to be used with proximity. This register is set by default to ON (0x74). In case
proximity is not required then this register should be set to OFF (0x46) and CAP0 Mode should be set to button
or disabled.
Low Power, Capacitive Button Touch and Proximity Controller
© 2011 Semtech Corp.
50
(8 sensors) with LED Drivers and Analog Output
www.semtech.com
DATASHEET
SX8661