BHA260AB Bosch

Bosch Sensortec BHA260 Ultra-low power and high-performance smart sensor hub with integrated accelerometer GENERAL DESCRIPTION The BHA260 is a family of ultra-low power smart hubs consisting FEATURES of Bosch Sensortecs new, programmable 32-bit microcontroller The BHA260 provides an ideal all-in-one solution for always-on (Fuser2), a state-of-the-art 3-axis accelerometer and a powerful sensor applications such as fitness tracking, step counting, software framework containing pre-installed sensor fusion and indoor navigation and gesture recognition. other sensor processing software within a small 22 pad LGA package. Hardware features The Fuser2 Core is configurable to operate at 20 MHz (Long CPU Core Run mode) and 50 MHz (Turbo mode). It can boot from a wide ARC EM4 CPU with ARCv2 16/32 bit instruction set TM variety of hosts, ranging from a small Cortex-M0 MCU up to (up to 3.6 CoreMark/MHz) multicore application processors. In combination with its wide Floating Point Unit (FPU) / Memory Protection Unit (MPU) connectivity and extendibility, the BHA260 becomes a versatile 4-channel micro DMA Controller / 2-way associative Cache and ideal solution when it comes to always-on sensor Controller processing at ultra-low power consumption. Memory BHA260 TARGET APPLICATIONS 256 kByte on-chip SRAM 24/7 always-on sensor processing at ultra-low power 144 kByte on-chip ROM preloaded with software consumption Power management and wake-up control, 3D orientation, Connectivity step counting, activity recognition, pose and head tracking, Host interface configurable as SPI or I2C context awareness 2 master interfaces Wrist-mounted, hearables, eyewear and other wearable (1x selectable SPI/12C master and 1xI2C master) devices Up to 12 GPIOs Smartphones and other mobile communication devices Fast I/O operations: AR/VR/MR reality headset and controller devices SPI and GPIOs up to 50 MHz I2C up to 3.4 MHz OVERVIEW Integrated sensor 16-bit 3-axis accelerometer Software features Open sensor development platform TM Integrated Software Framework and OpenRTOS with full TM Android compliant sensor stack Integrated BSX sensor fusion software for reliable 3D motion tracking, activity recognition, and more Powerful SDK for easy customization and support for Metaware C Compiler for ARC GNU C Compiler for ARC Bosch Sensortec BHA260 2 2 TECHNICAL SPECIFICATIONS 8 VREG Voltage regulator output Host Interface: BHA260 Technical data 9 SPI MISO / HSDO I2C address select Operating voltage 1.8 V Host Interface: Current consumption 10 HSDX SPI MOSI / I2C SDA Fuser2 (running CoreMark) Host Interface: Long Run mode (20 MHz) 950 A 11 SPI Chip select / Turbo mode (50 MHz) 2.8 mA HCSB Protocol Select Sensor Algorithm operation 12 (including sensor) M3SDA M3 I2C SDA Significant Motion 32 A 13 RESETN Reset input Step Counter 46 A 14 M3SCL M3 I2C SCL Activity Recognition 77 A 15 MCSB3 SPI Chip Select 3 Standby current 8 A 16 Sensor Fusion Performance M2SCX M2: SPI SCK / I2C SCL Static accuracy (Head., Pitch, Roll) 2, 2, 2, Degrees 17 MCSB2 SPI Chip Select 2 Dynamic accuracy (Head., Pitch, Roll) 7, 2, 2 Degrees 18 MCSB1 SPI Chip Select 1 Calibration time <1 second Host Interface Orientation stabilization time 0.2 seconds 19 HSCX SPI SCK / I2C SCL 20 HIRQ Host Interface Interrupt M2: SPI MISO / PIN CONFIGURATION 21 M2SDI I2C unused 22 RESV Do Not Connect Headquarters Bosch Sensortec GmbH Gerhard-Kindler-Strasse 9 72770 Reutlingen Germany Telephone +49 7121 3535 900 Fax +49 7121 3535 909 www.bosch-sensortec.com Pin configuration Pin Name Description 1 JTAG CLK Debug Clock 2 M2SDX M2: SPI MOSI / I2C SDA 3 JTAG DIO Debug Data 4 GND Analog Sensor Ground Digital IO and Fuser 5 GNDIO Ground Digital IO and Fuser 6 VDDIO Supply 7 VDD Analog Sensor Supply Data & Specification are preliminary and subject to change without notice Bosch Sensortec GmbH reserves all Doc.-Number: BST-BHA260-FL000-01 / Version 1.0 180615 rights in the event of industrial property rights. We reserve all rights of disposal such as copying and passing on to third parties. BOSCH and the symbols are registered trademarks of Robert Bosch GmbH, Germany.