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-BMA455-FL000-01 / Version_1.1_032017

TECHNICAL SPECIFICATIONS

Pin

configuratio

n

Pin

Name

Description

1

SDO

SPI: serial data out

2

SDx

Serial data I/O

3

Power supply

4

ASDA

Serial data I/O –

Secondary Interface

5

INT1

Interrupt pin

6

INT2

Interrupt pin

7

Power supply

8

Ground

9

GND

Ground

10

CSB

Chip select for SPI

11

ASCL

Digital clock (in) –

Secondary Interface

12

SCx

Digital clock (in)

SENSOR OPERATION

The BMA455 supports two modes of operation:

1) Standard data polling mode: Acceleration data is directly read-

out via the sensor’s digital interface and computed by a system

μController, application processor or a baseband processor. An

integrated FIFO with 1 kB of size can be used optionally to

reduce overall system current consumption.

2) Plug ’n’ play intelligence operation: Acceleration data is

computed already within the BMA455. The embedded

intelligence of the sensor can trigger an interrupt at certain

selectable events which can be mapped to the selectable

interrupt pins. In addition to the electrical interrupt, the status of

the events and the counted steps are stored in the register map

and can be read out easily.

Embedded intelligence:

 Step detector / Step counting

 Significant motion

 Tilt detection

 Wake-up, Glance, Pick-up

Feature parameters can be configured by the designer and thus

perfectly support the adoption to the required use case and

system design.

SYSTEM COMPATIBILITY

The BMA455 has been designed for best possible fit into

modern mobile consumer electronics and IoT devices. Besides

the very low height and lowest power consumption, the BMA455

connection of an external magnetometer (BMM150 recom-

mended) and the synchronization of the acceleration and the

magnetometer data in the FIFO of the BMA455. This reduces

the complexity of sensor data fusion and improves its precision

as well. BMA455 is designed for plug ‘n’ play functionality and

ease-of-use in various system designs with demanding

performance requirements.

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)

1

2

3

4

5

6

10

9

8

7

12

11

BMA455

Top View

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