Click here for production status of specific part numbers. MAX32664 Ultra-Low Power Biometric Sensor Hub General Description Benefits and Features The MAX32664 is a sensor hub family with embedded Biometric Sensor Hub Enables Faster Time to Market firmware and world-class algorithms for wearables. It Finger-Based (Version A) Algorithms Measure: seamlessly enables customer-desired sensor functionali- Pulse Heart Rate ty, including communication with Maxims optical sensor Pulse Blood Oxygen Saturation (SpO ) 2 solutions and delivering raw or calculated data to the out- Wrist-Based (Version B) Algorithm Measures: side world. This is achieved while keeping overall system Pulse Heart Rate power consumption in check. The device family interfaces Wrist-Based or Ear-Based (Version C) Algorithms 2 to a microcontroller host via a fast-mode slave I C inter- Measure: face for access to raw and processed sensor data as well Pulse Heart Rate as field updates. A firmware bootloader is also provided. Pulse Blood Oxygen Saturation (SpO ) 2 The MAX32664 Version A supports the MAX30101/ Finger-Based (Version D) Algorithms Measure: MAX30102 high-sensitivity pulse oximeter and heart-rate Pulse Heart Rate sensor for wearable health for finger-based applications. Pulse Blood Oxygen Saturation (SpO ) 2 2 A master mode I C interface for communication with sen- Estimated Blood Pressure sors is provided. Both Raw and Processed Data Are Available The MAX32664 Version B supports the MAX86140/ Basic Peripheral Mix Optimizes Size and Performance MAX86141 for wrist-based applications. A master mode 2 One Slave I C for Communication with a Host SPI interface for communication with sensors is provided. Microcontroller The MAX32664 Version C supports the MAX86140/ 2 One Master I C for Communication with Sensors MAX86141 for wrist-based applications and MAXM86161 (Versions A, C, and D) for ear-based applications. The device provides either a One Master SPI for Communication with Sensors 2 master mode SPI or an I C interface for communication (Versions B and C) with sensors. 32.768kHz RTC The MAX32664 Version D supports the MAX30101/ FIFO Provides Minimal Host Interaction MAX30102 high-sensitivity pulse oximeter and heart-rate Bootloader Facilitates Secure, Authenticated sensor for wearable health for finger-based applications. Firmware Upgrades 2 A master mode I C interface for communication with sen- sors is provided. Version D also supports estimated blood Ordering Information appears at end of data sheet. pressure monitoring. The wearable algorithms in the MAX32664 sensor hub support a directly connected accelerometer. They also al- low feeding of X, Y, and Z samples from a host-connected accelerometer. This architecture provides robust detection and compensation of motion artifacts in captured samples. The tiny form factor 1.6mm x 1.6mm WLP or 3mm x 3mm TQFN allows for integration into extremely small applica- tion devices. Applications Wearable Fitness Hearables Wearable Medical Portable Medical Mobile Devices 19-100313 Rev 3 4/20MAX32664 Ultra-Low Power Biometric Sensor Hub Simplified Block Diagram MAX32664 VERSION A, VERSION C, VERSION D 22 (I(I C INTERFACE TO SENSORS)C INTERFACE TO SENSORS) POR, 2 SENSOR SCL SENSOR I C TO SENSORS BROWNOUT SENSOR SDA PORT RSTN MONITOR, SUPPLY VOLTAGE MONITORS V CORE SLAVE SCL BIOMETRIC ALGORITHMS 2 SLAVE I C PORT TO HOST SLAVE SDA REGULATOR/ V DD POWER CONTROL V SS MFIO 32KIN RTC INTERRUPTS HR INT 32KOUT ACCEL INT MAX32664 VERSION B, VERSION C (SPI INTERFACE TO SENSORS)(SPI INTERFACE TO SENSORS) POR, PPG CS BROWNOUT ACCEL CS SENSOR SPI RSTN MONITOR, TO SENSORS SENSOR MOSI PORT SUPPLY VOLTAGE SENSOR MISO MONITORS SENSOR SCK V CORE SLAVE SCL BIOMETRIC ALGORITHMS 2 SLAVE I C PORT TO HOST SLAVE SDA REGULATOR/ VDD POWER CONTROL V SS MFIO 32KIN INTERRUPTS PPG INT RTC ACCEL INT 32KOUT www.maximintegrated.com Maxim Integrated 2