Datasheet

DocID025056 Rev 6 17/53
LIS2DH12 Terminology and functionality
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The turn-on time to transition to another operating mode is given in Table 11.
3.2.2 Self-test
The self-test allows the user to check the sensor functionality without moving it. When the
self-test is enabled, an actuation force is applied to the sensor, simulating a definite input
acceleration. In this case the sensor outputs will exhibit a change in their DC levels which
are related to the selected full scale through the device sensitivity. When the self-test is
activated, the device output level is given by the algebraic sum of the signals produced by
the acceleration acting on the sensor and by the electrostatic test-force. If the output signals
change within the amplitude specified inside Table 4, then the sensor is working properly
and the parameters of the interface chip are within the defined specifications.
Table 11. Turn-on time for operating mode transition
Operating mode change
Turn-on time
[ms]
12-bit mode to 8-bit mode 1/ODR
12-bit mode to 10-bit mode 1/ODR
10-bit mode to 8-bit mode 1/ODR
10-bit mode to 12-bit mode 7/ODR
8-bit mode to 10-bit mode 1/ODR
8-bit mode to 12-bit mode 7/ODR
Table 12. Current consumption of operating modes
Operating mode [Hz]
Low-power mode
(8-bit data output)
[μA]
Normal mode
(10-bit data output)
[μA]
High resolution
(12-bit data output)
[μA]
1222
10 3 4 4
25 4 6 6
50 6 11 11
100 10 20 20
200 18 38 38
400 36 73 73
1344 -- 185 185
1620 100 -- --
5376 185 -- --