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BMA400 Datasheet(PDF) 74 Page - Bosch Sensortec GmbH

Part # BMA400
Description  3-axes ultra-low power accelerometer
PDF  121 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) 74 Page - Bosch Sensortec GmbH

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Bosch Sensortec | BMA400 Data sheet
74 | 121
Modifications reserved | Data subject to change without notice
Document number: BST-BMA400-DS000-13 Revision_2.2_012025
wakeup_timeout_thres_3_0:
LSB of wake-up timeout threshold
temp= wakeup_timeout_thres_3_0 + 16*wakeup_timeout_thres_11_4
timeout=temp*2.5ms
Register (0x2F) WKUP_INT_CONFIG0
DESCRIPTION: the registers contain configurations for wake-up interrupt
RESET: 0x00
DEFINITION (Go to register map):
Name
Register (0x2F) WKUP_INT_CONFIG0
Bit
7
6
5
4
Read/Write
RW
RW
RW
RW
Reset Value
0
0
0
0
Content
wkup_z_en
wkup_y_en
wkup_x_en
num_of_samples
Bit
3
2
1
0
Read/Write
RW
RW
RW
RW
Reset Value
0
0
0
0
Content
num_of_samples
wkup_refu
wkup_refu:
wake-up interrupt reference update mode
wkup_refu
0x00
manual
manual update (reference registers are updated by external MCU)
0x01
onetime
one time automated update before going into low power mode
0x02
everytime every time after data conversion
num_of_samples:
number of data samples used for interrupt condition evaluation, allowed range
0...7 (number of samples(real) = num_of_samples(set) + 1)
wkup_x_en:
enable wake-up interrupt for x channel
wkup_x_en
0x00
disabled no x axis evaluation
0x01
enabled wakeup function evaluates x axis
wkup_y_en:
enable wake-up interrupt for y channel
wkup_y_en
0x00
disabled no y axis evaluation
0x01
enabled wakeup function evaluates y axis
wkup_z_en:
enable wake-up interrupt for z channel
wkup_z_en
0x00
disabled no z axis evaluation
0x01
enabled wakeup function evaluates z axis



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