Information

BMA280
Data sheet
Page 91
BST-BMA280-DS000-11 | Revision 1.8 | August 2014 Bosch Sensortec
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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 0x39 (OFC_OFFSET_Y)
Contains the offset compensation value for y-axis acceleration readout data.
Name
0x39
OFC_OFFSET_Y
Bit
7
6
5
4
Read/Write
R/W
R/W
R/W
R/W
Reset
Value
0
0
0
0
Content
offset_y<7:4>
Bit
3
2
1
0
Read/Write
R/W
R/W
R/W
R/W
Reset
Value
0
0
0
0
Content
offset_y<3:0>
offset_ y<7:0>: offset value, which is subtracted from the internal filtered and unfiltered y-
axis acceleration data; the offset value is represented with two’s complement
notation, with a mapping of +127  +0.992g, 0  0 g, and -128  -1 g; the
scaling is independent of the selected g-range; the content of the
offset_y<7:0> may be written to the NVM; it is automatically restored from
the NVM after each power-on or softreset; offset_y<7:0> may be written
directly by the user; it is generated automatically after triggering the fast
offset compensation procedure for the y-axis