Datasheet

Preliminary Data Sheet
BMA400
Page 13 /
Confidential
BST-BMA400-DS000-00 | Version 0.1 | November 2017 Bosch Sensortec
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Note: Specifications within this document are subject to change without notice.
–switching from sleep to normal mode, then SPI3 mode, then enable data ready interrupt and
map to pin int1
sleep
mode
Switch from sleep mode to
normal mode: ACC_CONFIG0
write_reg(addr=0x19,val=0x02)
wait(1500us)
write_reg(addr=0x21,val=0x80)
write_reg(addr=0x1A,val=0x30)
range=2g, osr=3 (high perf),
acc_odr=100Hz:
ACC_CONFIG1
write_reg(addr=0x1B,val=0xE4)
Enable X,Y,Z axis, use acc_filt2
(100Hz fixed) as data source:
ACC_CONFIG2
write_reg(addr=0x1F,val=0x80)
Enable data ready interrupt:
INT_CONFIG0
Map data ready interrupt to
INT1 pin: INT_CONFIG1
write_reg(addr=0x7C,val=0x01)
Switch from SPI4 mode to
SPI3 mode: IF_CONF
SPI4
SPI4
SPI4
SPI3
SPI3
SPI3
SPI3
Normal mode
data conv enabled
data ready int to int1
Confidential and under NDA
Seeed Studio
Confidential and under NDA
Seeed Studio
Confidential and under NDA