Datasheet

Data Sheet
BMA456
Page 98
BST-BMA456-DS000-01 | Version 1.1 | October 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.
acc_self_test_en: Enable accelerometer self-test
acc_self_test_en
0x00
disabled
disabled
0x01
enabled
enabled
acc_self_test_sign: select sign of self-test excitation as
acc_self_test_sign
0x00
negative
negative
0x01
positive
positive
acc_self_test_amp: select amplitude of the selftest deflection:
acc_self_test_amp
0x00
low
low
0x01
high
high
Register (0x70) NV_CONF
DESCRIPTION: NVM backed configuration bits.
RESET: 0x00
DEFINITION (Go to register map):
Name
Register (0x70) NV_CONF
Bit
7
6
5
4
Read/Write
n/a
n/a
n/a
n/a
Reset Value
0
0
0
0
Content
reserved
Bit
3
2
1
0
Read/Write
RW
RW
RW
RW
Reset Value
0
0
0
0
Content
acc_off_en
i2c_wdt_en
i2c_wdt_sel
spi_en
spi_en: disable the I2C and enable SPI for the primary interface, when it is in autoconfig mode
spi_en
0x00
disabled
I2C enabled
0x01
enabled
I2C disabled
i2c_wdt_sel: Select timer period for I2C Watchdog
i2c_wdt_sel
0x00
wdt_short
I2C watchdog timeout after 1.25 ms
0x01
wdt_long
I2C watchdog timeout after 40 ms