SX8661Z datasheet(2/87 Pages) SEMTECH

2 / 87 page

ADVANCED COMMUNICATIONS & SENSING

DATASHEET

Revision v4.0, February 2016

www.semtech.com

SX8661Z

Low Power, Capacitive Button Touch and Proximity Controller

(8 sensors) with LED Drivers and Analog Output

Table of Contents

GENERAL DESCRIPTION........................................................................................................................ 1

TYPICAL APPLICATION CIRCUIT ............................................................................................................ 1

KEY PRODUCT FEATURES..................................................................................................................... 1

APPLICATIONS....................................................................................................................................... 1

ORDERING INFORMATION...................................................................................................................... 1

GENERAL DESCRIPTION............................................................................................................... 5

1.1

Pin Diagram

1.2

Marking information

1.3

Pin Description

1.4

Simplified Block Diagram

1.5

Acronyms

ELECTRICAL CHARACTERISTICS ................................................................................................. 8

2.1

Absolute Maximum Ratings

2.2

Recommended Operating Conditions

2.3

Thermal Characteristics

2.4

Electrical Specifications

FUNCTIONAL DESCRIPTION........................................................................................................ 12

3.1

Introduction

3.1.1

General

3.1.2

GPIOs

3.1.3

Analog Output Interface A and B (SPO mode)

3.1.4

Buzzer (SPO mode)

3.1.5

Parameters

3.1.6

Configuration

3.2

Scan Period

3.3

Operation modes

3.4

Sensors on the PCB

3.5

Button Information

3.6

Buzzer

3.7

Analog Output Interface

3.8

Analog Sensing Interface

3.9

Offset Compensation

3.10

Processing

3.11

Configuration

3.12

Power Management

3.13

Clock Circuitry

3.14

I2C interface

3.15

Interrupt

3.15.1

Power up

3.15.2

Assertion

3.15.3

Clearing

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