Information

BNO055
Data sheet
Page 81
BST-BNO055-DS000-14 | Revision 1.4 | June 2016 Bosch Sensortec
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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.
4.4.7 GYR_Sleep_Config 0x0D
bit7
bit6
bit5
bit4
bit3
bit2
bit1
bit0
Access
r/w
r/w
r/w
r/w
r/w
r/w
r/w
r/w
Reset
Content
reserved
AUTO_SLP_DURATION <2:0>
SLP_DURATION <2:0>
DATA
bits
Description
AUTO_SLP_DUR
ATION <2:0>
<5:3>
The Gyroscope can be configures in the advanced power mode to optimize the power
consumption. This can be only done if the selected operation mode in sensor mode. The auto
sleep duration is the wake up duration of gyroscope during the duty cycling between normal
and fast-power up mode. Possible configuration for auto sleep duration are:
Auto sleep duration
Time (ms)
000b
Not allowed
001b
4 ms
010b
5 ms
011b
8 ms
100b
10 ms
101b
15 ms
110b
20 ms
111b
40 ms
SLP_DURATION
<2:0>
<2:0>
The Gyroscope can be configures in the advanced power mode to optimize the power
consumption. This can be only done if the selected operation mode in sensor mode. The sleep
duration is the sleep time of gyroscope during the duty cycling between normal and fast-power
up mode. Possible configuration for sleep duration are:
Sleep duration
Time (ms)
000b
2 ms
001b
4 ms
010b
5 ms
011b
8 ms
100b
10 ms
101b
15 ms
110b
18 ms
111b
20 ms
The only restriction for the use of the power save mode comes from the configuration of the
digital filter bandwidth of gyroscope. For each bandwidth configuration, minimum auto sleep
duration must be ensured. For example, for bandwidth = 47Hz, the minimum auto sleep
duration is 5ms. This is specified in the table below. For sleep duration, there is no
restriction.
Gyroscope bandwidth (Hz)
Mini Autosleep duration (ms)
32 Hz
20 ms
64 Hz
10 ms
12 Hz
20 ms
23 Hz
10 ms
47 Hz
5 ms
116 Hz
4 ms
230 Hz
4 ms
Unfiltered (523 Hz)
4 ms