BMI270 | Bosch Sensortec | 6-axis intelligent IMU (3-axis accelerometer + 3-axis gyroscope) consumer-grade MEMS inertial sensor

BMI270

I. Appearance and packaging

Package: LGA-14 (14-pin plastic LGA), reel-to-reel TR packaging, Bosch Sens...

Dimensions: 2.5 × 3.0 × 0.8 mm, small-sized chip from Bosch Sens...

Appearance description: black plastic cover on the top, with silk-screened "BMI270" and Bosch logo; 14 square gold-plated solder pads are arranged around the bottom, and there are no exposed pins; Internal integration of accelerometer MEMS, gyroscope MEMS module, no exposed holes; Pin compatible with BMI160, BMI260, can be directly hardware replaced

Moisture sensitivity level MSL3, reflow soldering needs to be controlled to prevent moisture, standard packaging of coil tape 5000 pieces / plate

2. Core electrical performance

form

parameter

Specifications

Measurement axis

3-axis accelerometer + 3-axis gyroscope (6-axis)

Acceleration measurement range

± 2g / ± 4g / ± 8g / ± 16g programmable img.quarkt...

Gyroscope range

±125/±250/±500/±1000/±2000 dps programmable img.quarkt...

Output resolution

16-bit acceleration, 16-bit gyroscope

Output rate ODR

Acceleration: 12.5 Hz-1.6 kHz; Gyroscope: 25 Hz - 6.4 kHzBosch Sens...

power supply

VDD：1.71‑3.6V；VDDIO: 1.2-3.6V, supports 1.8V system Bosch Sens...

electric consumption

Typical full-mode 685μ A;Only acceleration works about 10μA;Standby 3.5μ A

Communication interface

I²C, SPI, with AUX auxiliary interface, OIS anti-shake interface, 2 interrupt outputs INT1/INT2 Bosch Sens...

Built-in resources

2KB FIFO cache; On-chip motion recognition engine; Step counter, wrist lift, activity status detection (walking / running / stationary)

Operating temperature

-40℃ ~ +85℃

III. Working principle

Bosch MEMS silicon micromachining process, accelerometer detects gravity and linear motion; Gyroscope detects angular velocity rotation; The chip has built-in hardware motion processing units, no need for MCU to do complex algorithms, the chip directly outputs step count, gesture, and activity status interrupt signals, the host only does reading, greatly reducing the main controller's power consumption and extending battery life.

IV. Core Function Highlights

On-chip intelligent motion detection: built-in plug-and-play pedometer, wrist lift wake-up, gesture recognition, motion state classification, hardware completes detection, event triggers interrupt wake-up MCU

Pin compatibility with previous generation: BMI160 / BMI260 hardware is directly compatible, low cost for product iteration and material replacement

Rich interface expansion: AUX interface can be connected to other sensors; The OIS interface supports lens stabilization solution; Double interrupt flexible configuration Bosch Sens...

Low power consumption optimization for battery-powered wearable devices, balancing sampling performance and battery lifeBosch Sens...

Programmable filter, configurable bandwidth, suitable for different scenes such as motion tracking and attitude acquisitionBosch Sens...

V. Typical application scenarios

Wearable devices: smartwatches, wristbands, TWS earbuds, step counting, wrist raising to turn on screen, posture detection, fall detection

VR / AR controller: posture tracking, motion recognition

IoT portable devices: remote control, sports wristband, human activity monitoring

Mobile phone: motion recording, gesture recognition, stabilization assistance

Note: Consumer-grade devices, not car-grade, cannot be used in vehicle safety systems.

VI. Comparison of selection in the same series

BMI260: The previous generation of mainstream six-axis IMU, basic motion function;

BMI270: upgraded version, optimized step counting algorithm, activity recognition capability, OIS interface improvement, power consumption optimization;

BMI263: High seismic version.

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