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SX8644I05AWLTRT Datasheet(PDF) 2 Page - Semtech Corporation |
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SX8644I05AWLTRT Datasheet(HTML) 2 Page - Semtech Corporation |
2 / 76 page ADVANCED COMMUNICATIONS & SENSING DATASHEET Revision 7_3, January 10 © 2009 Semtech Corp. www.semtech.com 2 SX8644 Ultra Low Power, Capacitive Button and Slider Touch Controller (12 sensors) with Enhanced LED Drivers Table of Contents GENERAL DESCRIPTION........................................................................................................................ 1 TYPICAL APPLICATION CIRCUIT ............................................................................................................ 1 KEY PRODUCT FEATURES..................................................................................................................... 1 APPLICATIONS....................................................................................................................................... 1 ORDERING INFORMATION...................................................................................................................... 1 1 GENERAL DESCRIPTION............................................................................................................... 4 1.1 Pin Diagram 4 1.2 Marking information 4 1.3 Pin Description 5 1.4 Simplified Block Diagram 6 1.5 Acronyms 6 2 ELECTRICAL CHARACTERISTICS ................................................................................................. 7 2.1 Absolute Maximum Ratings 7 2.2 Recommended Operating Conditions 7 2.3 Thermal Characteristics 7 2.4 Electrical Specifications 8 3 FUNCTIONAL DESCRIPTION........................................................................................................ 10 3.1 Quickstart Application 10 3.2 Introduction 10 3.2.1 General 10 3.2.2 GPIOs 11 3.2.3 Parameters 11 3.2.4 Configuration 11 3.3 Scan Period 12 3.4 Operation modes 12 3.5 Sensors on the PCB 14 3.6 Button and Slider Information 15 3.6.1 Button Information 15 3.6.2 Slider Information 15 3.7 Analog Sensing Interface 17 3.8 Offset Compensation 18 3.9 Processing 19 3.10 Configuration 19 3.11 Power Management 21 3.12 Clock Circuitry 21 3.13 I2C interface 21 3.14 Reset 22 3.14.1 Power up 22 3.14.2 RESETB 22 3.14.3 Software Reset 23 3.15 Interrupt 24 3.15.1 Power up 24 3.15.2 Assertion 24 3.15.3 Clearing 24 |
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