Information

BMA280
Data sheet
Page 99
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.
The basic write operation waveform for 4-wire configuration is depicted in figure 14. During the
entire write cycle SDO remains in high- impedance state.
CSB
SCK
SDI
R/W
AD6
AD5
AD4
AD3
AD2
AD1
AD0
DI5
DI4
DI3
DI2
DI1
DI0
DI7
DI6
SDO
tri-state
Z
Figure 14: 4-wire basic SPI write sequence (mode ´11´)
The basic read operation waveform for 4-wire configuration is depicted in figure 15:
CSB
SCK
SDI
R/W
AD6
AD5
AD4
AD3
AD2
AD1
AD0
SDO
DO5
DO4
DO3
DO2
DO1
DO0
DO7
DO6
tri-state
Figure 15: 4-wire basic SPI read sequence (mode ´11´)