Specifications

Data sheet
BMA220
Page 36
BST-BMA220-DS003-08 | Revision 1.15 | August 2011 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.
6.4 Mode transition via interface
While the SPI or the I²C interfaces are active, transitions between the individual modes can be
triggered via register accesses.
1. Low power: The BMA220 switches into low-power mode after setting the sleep_en
register depicted in the memory map. While the BAA220 is in low-power mode, a period
wake-up is performed (please refer to section
4.1.2). Normal mode operation is resumed
after writing a ‘0’ to the sleep_en register. The sleep register is user accessible.
2. Suspend: The BMA220 is put into suspend mode by reading from the suspend address.
A subsequent read switches back to the previous state. Concluding, a read from the
suspend address toggles the suspend register.
Figure 12: Energy saving mode transitions