SX8661 datasheet(52/88 Pages) SEMTECH

tên linh kiện	SX8661

Giải thích chi tiết về linh kiện	Low Power, Capacitive Button Touch and Proximity Controller

PDF	88 Pages

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nhà sản xuất	SEMTECH [Semtech Corporation]

Trang chủ	http://www.semtech.com

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ADVANCED COMMUNICATIONS & SENSING

DATASHEET

Revision v3.2, January 2011

www.semtech.com

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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