SX8635I05AWLTRT datasheet(3/81 Pages) SEMTECH

Part #	SX8635I05AWLTRT

Description	Low Power, Capacitive Button and Wheel Touch Controller with Enhanced LED

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Manufacturer	SEMTECH [Semtech Corporation]

Direct Link	http://www.semtech.com

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ADVANCED COMMUNICATIONS & SENSING

DATASHEET

Revision 7_8, October 10

www.semtech.com

3

SX8635

Low Power, Capacitive Button and Wheel Touch Controller

(12 sensors) with Enhanced LED Drivers and Proximity Sensing

3.15.4

Example

25

3.16

General Purpose Input and Outputs

25

3.16.1

Introduction and Definitions

25

3.16.2

GPI

26

3.16.3

GPP

26

3.16.4

GPO

27

3.16.5

Intensity index vs PWM pulse width

30

3.17

Smart Wake Up

31

4

PIN DESCRIPTIONS ..................................................................................................................... 32

4.1

Introduction

32

4.2

ASI pins

32

4.3

Host interface pins

33

4.4

Power management pins

36

4.5

General purpose IO pins

37

5

DETAILED CONFIGURATION DESCRIPTIONS .............................................................................. 38

5.1

Introduction

38

5.2

General Parameters

41

5.3

Capacitive Sensors Parameters

42

5.4

Button Parameters

47

5.5

Wheel Parameters

51

5.6

Mapping Parameters

56

5.7

GPIO Parameters

59

6

I2C INTERFACE........................................................................................................................... 63

6.1

I2C Write

63

6.2

I2C read

64

6.3

I2C Registers Overview

65

6.4

Status Registers

66

6.5

Control Registers

69

6.6

SPM Gateway Registers

71

6.6.1

SPM Write Sequence

72

6.6.2

SPM Read Sequence

73

6.7

NVM burn

74

7

APPLICATION INFORMATION ...................................................................................................... 75

7.1

Typical Application Schematic

75

7.2

Example of Touch+Proximity Module

76

7.2.1

Overview

76

7.2.2

Operation

76

7.2.3

Performance

76

7.2.4

Schematics

77

7.2.5

Layout

78

8

REFERENCES ............................................................................................................................. 79

9

PACKAGING INFORMATION ........................................................................................................ 80

9.1

Package Outline Drawing

80

9.2

Land Pattern

80

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SX8635I05AWLTRT Datasheet(PDF) 3 Page - Semtech Corporation

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