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BMC056 is a low power and low noise 6-axis digital compass. It measures the earth’s geomagnetic field as well as dynamic and static acceleration in all three dimensions and outputs tilt- compensated heading or orientation information. BMC056 is housed in a package with a footprint of 3 x 3 mm² and 0.95 mm height. The integrated accelerometer provides all functionalities of Bosch Sensortec’s leading-edge 12 bit digital accelerometer, including a 32 frame FIFO buffer for storing acceleration data. Due to its advanced power management, BMC056 is ideally suited for virtual reality and navigation applications, motion tracking, shock and vibration detection in handhelds like mobile phones, tablet PCs, notebooks, portable media players, man- machine interfaces and game controllers. SENSOR FEATURES The eCompass comprises a 3-axis geomagnetic sensor based on Bosch’s proprietary FlipCore™ technology and a 3-axis 12 bit accelerometer. The accelerometer provides the device orien- tation for tilt compensated heading output. At the same time, it features all functions of a state-of-the art standalone accelero- meter. Like its predecessor BMC050, Bosch Sensortec’s BMC056 comes in a 3 x 3 x 0.95 mm³ 16-pin LGA package. The BMC056 features I²C and SPI (3-wire/4-wire) digital, serial interfaces and a powerful interrupt engine. Parameters like g- ranges or low-pass filter settings as well as all interrupt settings can easily be programmed via the digital interfaces. TECHNICAL SPECIFICATIONS BMC056 Technical data Digital interfaces I2C, SPI (3/4 wire) 4 interrupt pins Current consumption – regular mode – low-power mode 540 µA @ 10 Hz 190 µA @ 10 Hz Supply voltage 1.62 … 3.6 V Supply voltage I/O 1.20 … 3.6 V Operating temperature -40 … +85 °C LGA package 3 x 3 x 0.95 mm3 Geomagnetic sensor Measurement range ± 1000 µT (x-,y-axis) ± 2500 µT (z-axis) Resolution 0.3 µT Acceleration sensor Stand-alone operation supported Resolution 12 bit Programmable g-range ±2 g; ±4 g; ±8 g; ±16 g Zero-g offset (typ.) ±80 mg Sensitivity tolerance ±4 % Interrupt engine Accelerometer interrupts Orientation/flat detection, any motion, tap/double tap, sensing, low-/high-g threshold, slow motion/no motion detection, data ready Magnetometer interrupts magnetic data ready, magnetic threshold detection FIFO data buffer accelerometer 32 sample depth for each axis Bosch Sensortec BMC056 eCompass (6-axes digital compass) BMC056 TARGET APPLICATIONS Augmented reality applications and location-based services Indoor and outdoor navigation, e. g. map rotation or step counting (pedometry) Motion tracking Gesture recognition e. g. tap and double tap sensing, display profile switching Gaming Air mouse applications, pointing devices
Bosch Sensortec | BMC056 Data & Specification are preliminary and subject to change without notice | | Bosch Sensortec GmbH reserves all 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. 2 | 2 Doc.-Number: BST-BMC056-FL000-00 / Version_1.0_092012 TECHNICAL SPECIFICATIONS Pin configuration Pin No. Name Sensor Description 1 VDDIO Mag. + Acc. I/O voltage 2 INT3 Mag. Interrupt output #3
3 DNC/
Mag. Do not connect or connect to ground 4 SCK Mag. + Acc. Serial clock 5 GND Mag. + Acc. Ground 6 SDI Mag. + Acc. SPI: Data in, I²C: Data 7 SDO Mag. + Acc. SPI: Data out I²C: Slave address select 8 DRDY Mag. Data ready 9 INT2 Acc. Interrupt output #2 10 CSB2 Mag. Chip Select #2 11 INT1 Acc. Interrupt output #1 12 GND1 Mag. + Acc. Ground
13 NC – Not internally connected
14 VDD Mag. + Acc. Supply voltage 15 PS Mag. + Acc. Protocol select NEW FEATURES OF BMC056 Backed by Bosch’s huge technology and IP portfolio, Bosch Sensortec now introduces BMC056 in the premium eCompass segment. The enhanced interrupt engine features a set of new hard-wired functions making a BMC056 a more power efficient and easy to design-in product. The new FIFO memory allows storing 32 samples of each axis and offers use-case specific FIFO operation modes. ECOMPASS SOFTWARE Bosch Sensortec licenses proprietary leading-edge software package supporting BMC056, which has been tailored to ideally complement with the Bosch MEMS hardware. It features in-use calibration and self-monitoring and includes automatic magnetic offset cancellation and accelerometer tilt-compensation in order to provides a magnetic robust heading. For more details please contact your Bosch Sensortec representative. Fast in-use offset calibration Hard- and soft-iron calibration Magnetic heading 3D device orientation Signal quality information M4G – gyroscope emulation 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 (top view)