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BMX160 Datasheet(HTML) 16 Page - Bosch Sensortec GmbH

Part No. BMX160
Description  Small, low power 9-axis sensor
Download  113 Pages
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Maker  BOSCH [Bosch Sensortec GmbH]
Homepage  https://www.bosch-sensortec.com
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BMX160 Datasheet(HTML) 16 Page - Bosch Sensortec GmbH

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BMX160
Data sheet
Page 16
BST-BMX160-DS000-12 | Revision 1.2 | January 2019
Bosch Sensortec
© Bosch Sensortec GmbH reserves all rights even 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 symbol are registered trademarks of Robert Bosch GmbH, Germany. Note: Specifications within this document are preliminary and
subject to change without notice.
Magnetometer Interface
 Low power mode: 1) In setup mode*: It allows the user to configure the magnetometer
using indirect addressing; 2) In data mode*: It triggers the magnetometer force mode
periodically. FIFO data readout are supported in low power mode to a limited extent, see
Register (0x03) PMU_STATUS
 Normal mode: Similar to low power mode but FIFO data readout are supported
 Suspend mode: Neither magnetometer configuration nor triggering of magnetometer
force mode take place
* Note: Setup mode and data mode are two basic configurations of the magnetometer interface,
see section 2.4.3.1.
Magnetometer
 Force mode: Selected magnetometer channels are measured according to data
acquisition presets described in section 2.2.1.2 and then the magnetometer goes to sleep
mode. This design assures an optimized power consumption
 Sleep mode: Force mode can be triggered. All the magnetometer data acquisition presets
remain. Magnetometer can only be indirectly configured via magnetometer interface when
it is in sleep mode
 Suspend mode: No force mode can be triggered. All the data acquisition presets will be
cleared and no magnetometer configuration can be done. From suspend mode,
magnetometer must be put into sleep mode first, and then the data acquisition presets
can be configured.
2.2.1 Transitions between Power Modes
Accelerometer and Gyroscope Power Modes
The table below for the power modes of gyroscope and accelerometer shows which power mode
combinations are supported by BMX160.
With regard to the below diagram, transitions between power modes are only allowed in horizontal
or vertical direction. Transitions in diagonal direction are not supported.
Table 8: Typical total current consumption in µA according to accel/gyro modes
Typical current consumption in µA10
(geomagnetic sensor in suspend mode)
Accelerometer Mode
Suspend
Normal
Low Power
Gyroscope
Mode
Suspend
3
180
See Table 9
Fast Start-up
500
580
n.a.
Normal
850
925
n.a.
10 Preliminary values to be updated.
It is mandatory to put magnetometer into suspend mode before putting
magnetometer interface into suspend mode.


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