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SX8661 Datasheet(PDF) 52 Page - Semtech Corporation

Part # SX8661
Description  Low Power, Capacitive Button Touch and Proximity Controller
PDF  88 Pages
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Manufacturer  SEMTECH [Semtech Corporation]
Direct Link  http://www.semtech.com
Logo SEMTECH - Semtech Corporation

SX8661 Datasheet(HTML) 52 Page - Semtech Corporation

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ADVANCED COMMUNICATIONS & SENSING
DATASHEET
Revision v3.2, January 2011
© 2011 Semtech Corp.
www.semtech.com
52
SX8661
Low Power, Capacitive Button Touch and Proximity Controller
(8 sensors) with LED Drivers and Analog Output
Proximity Parameters
Address
Name
Bits
Description
0x20
ProxReporting
7:0
Defines triple or dual mode reporting of proximity on the GPIOs.
0x00: dual mode
0x7F: triple mode (default)
0x21
ProxIntensity
7:0
Defines the proximity ON intensity index.
0x00: 0
0x01: 1
…
0x64: 100 (default)
…
0xFF: 255
Table 19
Proximity Parameters
ProxDebounce
Defines the number of samples for determining proximity detection or out of proximity detection.
This parameter allows to set the debouncer of the proximity differently from the buttons debouncer.
ProxHysteresis
Proximity is detected if the ticks are getting larger as the value defined by:
CapThreshold0 + CapThreshold0 * hysteresis.
Out of proximity is detected if the ticks are getting smaller as the value defined by:
CapThreshold0 – CapThreshold0 * hysteresis.
ProxReporting
Defines the reporting mode of proximity (either dual or triple) on the GPIOs.
ProxIntensity
Defines the proximity intensity index (applicable in triple reporting mode).



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