Information

BMA280
Data sheet
Page 52
BST-BMA280-DS000-11 | Revision 1.8 | August 2014 Bosch Sensortec
© Bosch Sensortec GmbH reserves all rights even in the event of industrial property rights. We reserve all rights of disposal such as copying and passing on to
third parties. BOSCH and the symbol are registered trademarks of Robert Bosch GmbH, Germany.
Note: Specifications within this document are subject to change without notice.
Register 0x04 (ACCD_Y_LSB)
The register contains the least-significant bits of the Y-channel acceleration readout value.
When reading out Y-channel acceleration values, data consistency is guaranteed if the
ACCD_Y_LSB is read out before the ACCD_Y_MSB and shadow_dis=’0’. In this case, after the
ACCD_Y_LSB has been read, the value in the ACCD_Y_MSB register is locked until the
ACCD_Y_MSB has been read. This condition is inherently fulfilled if a burst-mode read access
is performed. Acceleration data may be read from register ACCD_Y_LSB at any time except
during power-up and in DEEP_SUSPEND mode.
Name
0x04
ACCD_Y_LSB
Bit
7
6
5
4
Read/Write
R
R
R
R
Reset
Value
n/a
n/a
n/a
n/a
Content
acc_y_lsb<5:2>
Bit
3
2
1
0
Read/Write
R
R
R
R
Reset
Value
n/a
n/a
n/a
n/a
Content
acc_y_lsb<1:0>
undefined
new_data_y
acc_y_lsb<5:2>: Upper 4 bits of least significant 6 bits of acceleration read-back value; (two’s-
complement format)
acc_y_lsb<1:0>: Lower 2 bits of least significant 6 bits of acceleration read-back value; (two’s-
complement format)
undefined: random data; to be ignored
new_data_y: ‚0’: acceleration value has not been updated since it has been read out last
‚1’: acceleration value has been updated since it has been read out last