IQ Switch Azoteq ProxSense Series IQS624 DATASHEET Combination sensor including: Hall-effect rotation sensing, along with dual-channel capactive proximity/touch sensing, or single-channel inductive sensing. The IQS624 ProxFusion IC is a multifunctional capacitive and Hall-effect sensor designed for applications where any or all the technologies may be required. The two Hall-effect sensors calculate 2 the angle of a magnet rotating parallel with the sensor. The sensor is fully I C compatible and on- chip calculations enable the IC to stream the current angle of the magnet without extra calculations. Features > Hall effect angle sensor: > Inductive sensing On-chip Hall plates Only external sense coil 360 Absolute Output required (PCB 1 Resolution*, calculated on chip trace) Relative rotation angle. > Multiple Detect movement and the direction of integrated UI movement. DFN10 WLCSP-9 Proximity / Touch Raw data: can be used to calculate Representations only, not actual markings Proximity wake-up degrees on external processor. Event mode Wide operational range Wake Hall sensing on proximity No external components required > Minimal external components > Partial auto calibration: 2 > Standard I C interface Continuous auto-calibration, > Optional RDY indication for event mode compensation for wear or small operation displacements of the sensor or magnet. > Low power consumption: Flexible gain control 240uA (100Hz response, Hall), Automatic Tuning Implementation (ATI) 55uA (100Hz response, capacitive), Performance enhancement (10 bit). > Capacitive sensing 65uA (20Hz response, Hall) 15uA (20Hz response, capacitive) Full auto-tuning with adjustable sensitivity 5uA (5Hz response, capacitive) 2pF to 200pF external capacitive load > Supply Voltage: 2.0V to 3.6V** capability *Optimal conditions **5V solution available on demand. Applications > Anemometer > Measuring wheel > Dial or Selector knob > Digital angle gauge > Mouse wheel > Speedometer for bicycle Available Packages TA DFN(3x3)-10 WLCSP-9 1 IQS624-xzyy -20C to 85C IQS624-32yy 1 All versions Copyright Azoteq (Pty) Ltd 2021. IQS624 Datasheet V2.06 Page 1 of 76 All Rights Reserved. Memory map July 2021 IQ Switch Azoteq ProxSense Series Contents IQS624 DATASHEET ........................................................................................................................................ 1 INTRODUCTION ....................................................................................................................................... 5 PROXFUSION .............................................................................................................................5 PACKAGING AND PIN-OUT .............................................................................................................5 REFERENCE SCHEMATIC ................................................................................................................7 SENSOR CHANNEL COMBINATIONS..................................................................................................7 PROXFUSION SENSITIVITY ..........................................................................................................8 CAPACITIVE SENSING ............................................................................................................................ 9 INTRODUCTION ..............................................................................................................................9 CHANNEL SPECIFICATIONS .............................................................................................................9 HARDWARE CONFIGURATION....................................................................................................... 10 REGISTER CONFIGURATION ......................................................................................................... 10 SENSOR DATA OUTPUT AND FLAGS .............................................................................................. 11 INDUCTIVE SENSING ............................................................................................................................ 12 INTRODUCTION TO INDUCTIVE SENSING ........................................................................................ 12 CHANNEL SPECIFICATIONS .......................................................................................................... 12 HARDWARE CONFIGURATION....................................................................................................... 12 REGISTER CONFIGURATION ......................................................................................................... 13 SENSOR DATA OUTPUT AND FLAGS .............................................................................................. 13 HALL-EFFECT SENSING ....................................................................................................................... 14 INTRODUCTION TO HALL-EFFECT SENSING ................................................................................... 14 CHANNEL SPECIFICATIONS .......................................................................................................... 14 HARDWARE CONFIGURATION....................................................................................................... 15 REGISTER CONFIGURATION ......................................................................................................... 15 EXAMPLE CODE: ......................................................................................................................... 16 SENSOR DATA OUTPUT AND FLAGS .............................................................................................. 16 IQS624-32 INTERVAL UI ............................................................................................................ 17 IQS624-32 EXAMPLE ................................................................................................................. 19 IQS624-32 WHEEL WAKE PRELOAD (0X7C) ............................................................................... 20 IQS624-32 EVENT MODE OPTIONS ............................................................................................ 20 DEVICE CLOCK, POWER MANAGEMENT AND MODE OPERATION ............................................... 22 DEVICE MAIN OSCILLATOR ........................................................................................................... 22 DEVICE MODES .......................................................................................................................... 22 REPORT RATES ..................................................................................................................................... 24 NORMAL POWER MAXIMUM REPORT RATE ................................................................................... 24 SYSTEM RESET ..................................................................................................................................... 24 COMMUNICATION ................................................................................................................................. 25 CONTROL BYTE.......................................................................................................................... 25 I2C READ .................................................................................................................................. 25 I2C WRITE ................................................................................................................................. 26 END OF COMMUNICATION SESSION / WINDOW ............................................................................. 26 STOP-BIT DISABLE OPTION(IQS624-32) ...................................................................................... 26 DEVICE ADDRESS AND SUB-ADDRESSES ...................................................................................... 27 ADDITIONAL OTP OPTIONS ......................................................................................................... 27 REQUEST COMMUNICATION WINDOW .......................................................................................... 28 Copyright Azoteq (Pty) Ltd 2021. IQS624 Datasheet V2.06 Page 2 of 76 All Rights Reserved. Memory map July 2021