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BMA400 Datasheet(PDF) 80 Page - Bosch Sensortec GmbH

Part # BMA400
Description  3-axes ultra-low power accelerometer
Download  126 Pages
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Manufacturer  BOSCH [Bosch Sensortec GmbH]
Direct Link  https://www.bosch-sensortec.com
Logo BOSCH - Bosch Sensortec GmbH

BMA400 Datasheet(HTML) 80 Page - Bosch Sensortec GmbH

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Bosch Sensortec | BMA400 Data sheet
80 | 126
Modifications reserved | Data subject to change without notice
Document number: BST-BMA400-DS000-02 | Revision_1.1_072018
Register (0x30) WKUP_INT_CONFIG1
DESCRIPTION: the register contains configurations for wake-up interrupt
RESET: 0x00
DEFINITION (Go to register map):
Name
Register (0x30) WKUP_INT_CONFIG1
Bit
7
6
5
4
Read/Write
RW
RW
RW
RW
Reset Value
0
0
0
0
Content
int_wkup_thres
Bit
3
2
1
0
Read/Write
RW
RW
RW
RW
Reset Value
0
0
0
0
Content
int_wkup_thres
int_wkup_thres:
interrupt threshold
The value is range sensitive, unsigned and defines the threshold for activity
which must be present to cause a wake-up. The physical value of LSB
corresponds to 2^(2+acc_range)/256, here acc_range = 0, 1, 2, 3 corresponds
to +/-2g, +/-4g, +/-8g, +/-16g.
Register (0x31) WKUP_INT_CONFIG2
DESCRIPTION: the register contains configurations for wake-up interrupt
RESET: 0x00
DEFINITION (Go to register map):
Name
Register (0x31) WKUP_INT_CONFIG2
Bit
7
6
5
4
Read/Write
RW
RW
RW
RW
Reset Value
0
0
0
0
Content
int_wkup_refx
Bit
3
2
1
0
Read/Write
RW
RW
RW
RW
Reset Value
0
0
0
0
Content
int_wkup_refx
int_wkup_refx: reference acceleration x-axis for the wake-up interrupt. The value is range sensitive
and a signed integer, either provided by the host (wkup_refu=0) or automatically the
wake-up interrupt calculates abs(acc_x/y/z-int_wkup_refx/y/z*16)>int_wkup_thres*16
to determine whether activity is sufficiently high on the x/y/z-axis to cause wake-up


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