Click here to ask about the production status of specific part numbers. MAX25205 Gesture Sensor for Automotive Applications General Description Benefits and Features The MAX25205 is a low-cost data-acquisition system for Low-Cost, Flexible Gesture-Sensing Solution for gesture and proximity sensing. The MAX25205 recog- Automotive Applications nizes the following independent gestures: Low-Power, Low-Cost External CPU Processes Sensor Output Hand swipe gestures (left, right, up, and down) Supports Swipe, Rotation, and Proximity Gestures Finger and hand rotation (CW and CCW) Highly Integrated Proximity detection 60-Pixel IR Photodiode Array The proximity, hand detection, and gesture recognition Integrated LED Driver functions of the MAX25205 operate by detecting the light 2 400kHz I C and 6MHz SPI Serial Interfaces reflected from the controlled IR-LED light source with an Operates in 120k Lux Ambient Light integrated 6x10-element optical sensor array. The AEC-Q100 Qualified MAX25205 can detect these gestures even when exposed -40C to +85C Operation to bright ambient light. A low-power, low-cost CPU, such MSL1 as the MAX32630, is required to process the data from the sensor. Ultra-Low-Power Operation 1mA at 3.3V This discrete light source is created externally with one or more FETs driven directly from the MA25205. The light Compact 4mm x 4mm x 1.35mm, 20-Pin, Side- sources PWM duty cycle is programmable from 1/16 to Wettable QFN Package 16/16. The LEDs are pulsed on one or more times in a pro- Ordering Information appears at end of datasheet. grammable sequence that is repeated for every sample. For flexibility, the MAX25205 supports two different serial Simplified System Diagram 2 communication protocols: I C (400kHz) and SPI (6MHz). MCU The MAX25205 is available in a 4mm x 4mm, 20-pin, opti- cal QFN package. API MCU Gesture USB Application Library Applications Central Information Display Control UART SPI/I2C Rear-Seat Entertainment Systems Door, Moon Roof, and Trunk Control MAX25205 Mechanical Switch Replacement LEDs Occupant Detection driver Sensor Board 19-100727 Rev 1 9/20MAX25205 Gesture Sensor for Automotive Applications TABLE OF CONTENTS General Description 1 Applications 1 Benefits and Features 1 Simplified System Diagram 1 Absolute Maximum Ratings 5 Package Information . 5 4mm x 4mm QFN . 5 Electrical Characteristics . 5 Pin Configuration 8 MAX25205 8 Pin Description . 8 Functional Diagrams 10 Block Diagram 10 Detailed Description 11 Recommended Operating Conditions 11 Register Map 12 MAX25205 . 12 Register Details . 15 Applications Information . 28 Principle of Operation . 28 Operation Mode . 28 CDS Mode 0 . 28 CDS Mode 1 . 28 MAX25205 Sample-Sequence Timing 28 Array Orientation 30 2 I C Serial Interface . 30 2 Enabling I C or SPI communications 30 START and STOP Conditions 31 Early STOP Conditions . 31 Acknowledge . 31 Write Data Format . 31 Read Data Format . 32 SPI Interface 33 Typical Application Circuits . 35 Typical Application Circuit with External FET LED Drive 35 Typical Application Circuit with Internal Current Drive 36 Ordering Information 36 Revision History . 37 www.maximintegrated.com Maxim Integrated 2