IQ Switch ProxFusion Series IQS625 Datasheet Combination sensor including: Hall-effect rotation sensing, along with dual-channel capactive proximity/touch sensing. The IQS625 ProxFusion IC is a multifunctional capacitive and Hall-effect sensor designed for applications where any or all of the technologies may be required. The two Hall-effect sensors 2 calculate 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 interval of the magnet without extra calculations. Features Multiple integrated UI Hall effect angle sensor: o Proximity / Touch o On-chip Hall plates o Proximity wake-up o Absolute Wheel Interval Output o Event mode Up to 36 intervals o Wake Hall sensing on o Raw data: can be used to calculate proximity degrees on external processor. o Interval wake-up o Wide operational range TSSOP-8 Representations Minimal external components o No external components required only, not actual markings 2 Standard I C interface Partial auto calibration: Optional RDY indication for event o Continuous auto-calibration, mode operation compensation for wear or small displacements of the sensor or magnet. Low power consumption: o Flexible gain control 240uA (100Hz response, Hall), o Automatic Tuning Implementation (ATI) 55uA (100Hz response, capacitive), Performance enhancement (10 bit). 65uA (20Hz response, Hall) Capacitive sensing 15uA (20Hz response, capacitive) o Full auto-tuning with adjustable 5uA (5Hz response, capacitive) sensitivity Supply Voltage: 2.0V to 3.6V o 2pF to 200pF external capacitive load *Optimal conditions capability Applications Anemometer Measuring wheel Dial or Selector knob Digital angle gauge Mouse wheel Speedometer for bicycle Available Packages T TSSOP(3x6.4)-8 A -20C to 85C IQS625-3yy Copyright Azoteq 2018 IQS625 Datasheet v1.0 Page 1 of 61 All rights reserved Memory Map November 2018 IQ Switch ProxFusion Series Contents LIST OF ABBREVIATIONS ............................................................................................................................................. 4 INTRODUCTION .................................................................................................................................................. 5 1.1 PROXFUSION ....................................................................................................................................................... 5 1.2 PACKAGING AND PIN-OUT ....................................................................................................................................... 5 1.3 REFERENCE SCHEMATIC ........................................................................................................................................... 5 1.4 SENSOR CHANNEL COMBINATIONS ............................................................................................................................. 6 1.5 PROXFUSION SENSITIVITY ...................................................................................................................................... 6 CAPACITIVE SENSING ......................................................................................................................................... 7 2.1 INTRODUCTION ...................................................................................................................................................... 7 2.2 CHANNEL SPECIFICATIONS ........................................................................................................................................ 7 2.3 HARDWARE CONFIGURATION .................................................................................................................................... 8 2.4 REGISTER CONFIGURATION ....................................................................................................................................... 8 2.5 SENSOR DATA OUTPUT AND FLAGS ............................................................................................................................. 9 HALL-EFFECT SENSING .......................................................................................................................................10 3.1 INTRODUCTION TO HALL-EFFECT SENSING ................................................................................................................. 10 3.2 CHANNEL SPECIFICATIONS ...................................................................................................................................... 10 3.3 HARDWARE CONFIGURATION .................................................................................................................................. 11 3.4 REGISTER CONFIGURATION ..................................................................................................................................... 11 3.5 SENSOR DATA OUTPUT AND FLAGS ........................................................................................................................... 12 3.6 IQS625 INTERVAL UI ........................................................................................................................................... 12 3.7 IQS625 EXAMPLE ................................................................................................................................................ 14 3.8 IQS625 WHEEL WAKE PRELOAD (0X7C) ................................................................................................................. 15 3.9 IQS625 EVENT MODE OPTIONS ............................................................................................................................. 15 DEVICE CLOCK, POWER MANAGEMENT AND MODE OPERATION ......................................................................17 4.1 DEVICE MAIN OSCILLATOR ...................................................................................................................................... 17 4.2 DEVICE MODES .................................................................................................................................................... 17 4.3 STREAMING AND EVENT MODE: ............................................................................................................................... 18 4.4 SYSTEM RESET ..................................................................................................................................................... 19 COMMUNICATION ............................................................................................................................................20 5.1 CONTROL BYTE .................................................................................................................................................... 20 5.2 I2C READ ........................................................................................................................................................... 20 5.3 I2C WRITE .......................................................................................................................................................... 21 5.4 END OF COMMUNICATION SESSION / WINDOW ......................................................................................................... 21 5.5 STOP-BIT DISABLE OPTION ...................................................................................................................................... 21 5.6 DEVICE ADDRESS AND SUB-ADDRESSES ..................................................................................................................... 22 5.7 ADDITIONAL OTP OPTIONS .................................................................................................................................... 22 5.8 REQUEST COMMUNICATION WINDOW ..................................................................................................................... 23 2 5.9 I C SPECIFIC COMMANDS ...................................................................................................................................... 23 5.10 RECOMMENDED COMMUNICATION AND RUNTIME FLOW DIAGRAM ................................................................................ 24 IQS625 MEMORY MAP ......................................................................................................................................25 6.1 DEVICE INFORMATION ........................................................................................................................................... 27 6.2 DEVICE SPECIFIC DATA .......................................................................................................................................... 28 6.3 COUNT DATA ...................................................................................................................................................... 29 6.4 PROXFUSION SENSOR SETTINGS ............................................................................................................................... 30 6.5 TOUCH / PROXIMITY UI SETTINGS............................................................................................................................ 32 6.6 HALL SENSOR SETTINGS........................................................................................................................................ 33 6.7 DEVICE AND POWER MODE SETTINGS ...................................................................................................................... 37 ELECTRICAL CHARACTERISTICS ..........................................................................................................................41 7.1 ABSOLUTE MAXIMUM SPECIFICATIONS ..................................................................................................................... 41 7.2 VOLTAGE REGULATION SPECIFICATIONS ..................................................................................................................... 41 Copyright Azoteq 2018 IQS625 Datasheet v1.0 Page 2 of 61 All rights reserved Memory Map November 2018