Datasheet

Preliminary Data Sheet
BMA400
Page 84 /
Confidential
BST-BMA400-DS000-00 | Version 0.1 | November 2017 Bosch Sensortec
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BOSCH and the symbol are registered trademarks of Robert Bosch GmbH, Germany.
Note: Specifications within this document are subject to change without notice.
wakeup_timeout_thres_3_0: lsb of wake-up timeout threshold
timeout= wakeup_timeout_thres_3_0 + 16*wakeup_timeout_thres_11_4
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_sample
s
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 samples for interrupt condition evaluation, allowed range 1..8
wkup_x_en: enable low power 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 low power 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 low power 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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