IQ Switch ProxFusion Series IQS621 Datasheet Combination sensor with ambient light sensing (ALS), capacitive proximity/touch, Hall- effect sensor & inductive sensing capabilities The IQS621 ProxFusion IC is a multifunctional, ambient light sensing (ALS), capacitive, Hall-effect & inductive sensor designed for applications where any or all of the technologies may be required. The IQS621 is an ultra-low power solution designed for short or long term activations through any of 2 the sensing channels. The IQS621 is fully I C compatible. Features mobile platforms: Unique combination of sensing technologies: o Proximity / Touch o Capacitive sensing o Proximity wake-up o Ambient light sensing (ALS) Automatic Tuning o Hall-effect sensing Implementation (ATI) o Inductive sensing performance Capacitive sensing enhancement (10bit) o Full auto-tuning with adjustable sensitivity Minimal external UOLG 2.8 x 2.5 x 0.6 o 2pF to 200pF external capacitive load components 9-pin capability 2 Representations only Standard I C interface o Enhanced temperature stability Optional RDY indication for event mode Ambient light sensing (ALS) operation o Absolute lux output o Human eye response compensated Low power consumption: o 75uA (100Hz response, 1ch inductive) o 4-bit ALS range output (0 - 10) o 95uA (100Hz response, 2ch Hall) o Dual threshold detection for day/night o 75uA (100Hz response, 3ch capacitive) indication with hysteresis o 60uA (100Hz response, ALS) Hall-effect sensing o 25uA (20Hz response, 1ch inductive) o On-chip Hall-effect measurement plates o 25uA (20Hz response, 2ch Hall) o Dual direction Hall switch sensor UI o 20uA (20Hz response, 3ch capacitive) o 2 level detection (widely variable) o 18uA (20Hz response, ALS) o Detection range 10mT 200mT o 2.5uA (4Hz response, 1ch cap. wake-up) Inductive sensing Supply voltage: 1.8V to 3.3V o 2 Level detection and hysteresis for inductive sensing Low profile UOLG - 2.8 x 2.5 x 0.6 - 9-pin package o Only external sense coil required (PCB trace) Multiple integrated UI options based on years of experience in sensing on fixed and Applications Mobile electronics (phones/tablets) Wearable devices Home automation & lighting control Human Interface Devices 1 White goods and appliances Aftermarket automotive Available Packages T UOLG-2.8 x 2.5 x 0.69N A -20C to +85C IQS621 1 The part is not automotive qualified. Copyright Azoteq 2018 IQS621 Datasheet revision 1.15 Page 1 of 79 All Rights Reserved Shortcut to memory map May 2018 IQ Switch ProxFusion Series Table of Contents LIST OF ABBREVIATIONS ............................................................................................................................................. 4 1 INTRODUCTION .................................................................................................................................................. 5 PROXFUSION ....................................................................................................................................................... 5 PACKAGING AND PIN-OUT ....................................................................................................................................... 6 REFERENCE SCHEMATIC ........................................................................................................................................... 7 SENSOR CHANNEL COMBINATIONS ............................................................................................................................. 8 PROXFUSION SENSITIVITY ....................................................................................................................................... 9 2 CAPACITIVE SENSING ........................................................................................................................................10 INTRODUCTION TO PROXSENSE .............................................................................................................................. 10 CHANNEL SPECIFICATIONS ...................................................................................................................................... 10 HARDWARE CONFIGURATION .................................................................................................................................. 11 SOFTWARE CONFIGURATION ................................................................................................................................... 12 SENSOR DATA OUTPUT AND FLAGS ........................................................................................................................... 13 3 INDUCTIVE SENSING ..........................................................................................................................................14 INTRODUCTION TO INDUCTIVE SENSING ..................................................................................................................... 14 CHANNEL SPECIFICATIONS ...................................................................................................................................... 14 HARDWARE CONFIGURATION .................................................................................................................................. 15 SOFTWARE CONFIGURATION ................................................................................................................................... 15 SENSOR DATA OUTPUT AND FLAGS ........................................................................................................................... 17 4 AMBIENT LIGHT SENSING (ALS) .........................................................................................................................18 INTRODUCTION TO AMBIENT LIGHT SENSING .............................................................................................................. 18 CHANNEL SPECIFICATIONS ...................................................................................................................................... 18 HARDWARE CONFIGURATION .................................................................................................................................. 18 SOFTWARE CONFIGURATION ................................................................................................................................... 19 SENSOR DATA OUTPUT AND FLAGS ........................................................................................................................... 20 5 HALL-EFFECT SENSING .......................................................................................................................................21 INTRODUCTION TO HALL-EFFECT SENSING ................................................................................................................. 21 CHANNEL SPECIFICATIONS ...................................................................................................................................... 21 HARDWARE CONFIGURATION .................................................................................................................................. 22 SOFTWARE CONFIGURATION ................................................................................................................................... 23 SENSOR DATA OUTPUT AND FLAGS ........................................................................................................................... 24 6 TEMPERATURE MONITORING ...........................................................................................................................25 INTRODUCTION TO TEMPERATURE MONITORING ......................................................................................................... 25 CHANNEL SPECIFICATIONS ...................................................................................................................................... 25 HARDWARE CONFIGURATION .................................................................................................................................. 25 SOFTWARE CONFIGURATION ................................................................................................................................... 25 SENSOR DATA OUTPUT AND FLAGS ........................................................................................................................... 26 7 DEVICE CLOCK, POWER MANAGEMENT AND MODE OPERATION ......................................................................27 DEVICE MAIN OSCILLATOR ...................................................................................................................................... 27 DEVICE MODES .................................................................................................................................................... 27 SYSTEM RESET ..................................................................................................................................................... 28 8 COMMUNICATION ............................................................................................................................................29 2 I C MODULE SPECIFICATION .................................................................................................................................... 29 I2C READ ........................................................................................................................................................... 29 2 I C WRITE .......................................................................................................................................................... 29 STOP-BIT DISABLE OPTION ...................................................................................................................................... 30 DEVICE ADDRESS AND SUB-ADDRESSES ..................................................................................................................... 31 Copyright Azoteq 2018 IQS621 Datasheet revision 1.15 Page 2 of 79 All Rights Reserved Shortcut to memory map May 2018