LSM320HAY30 Datasheet, PDF (33/42 Pages) STMicroelectronics – MEMS motion sensor module: 3D digital accelerometer and 2D pitch and yaw analog gyroscope

LSM320HAY30
Register description
By setting the TurnOn[1:0] bits to 11, the “sleep-to-wake” function is enabled. When an
interrupt event occurs, the device is goes into normal mode, increasing the ODR to the value
defined in LA_CTRL_REG1. Although the device is in normal mode, LA_CTRL_REG1
content is not automatically changed to “normal mode” configuration.
8.7
LA_HP_FILTER_RESET (25h)
Dummy register. Reading at this address instantaneously zeroes the content of the internal
high-pass filter. If the high-pass filter is enabled, all three axes are instantaneously set to 0
g. This makes it possible to surmount the settling time of the high-pass filter.
8.8
REFERENCE (26h)
Table 32. REFERENCE register
Ref7
Ref6
Ref5
Ref4
Ref3
Ref2
Ref1
Ref0
Table 33. REFERENCE description
Ref7 - Ref0 Reference value for high-pass filter. Default value: 00h.
This register sets the acceleration value taken as a reference for the high-pass filter output.
When the filter is turned on (at least one FDS, HPen2, or HPen1 bit is equal to ‘1’) and HPM
bits are set to “01”, filter out is generated taking this value as a reference.
8.9
LA_STATUS_REG (27h)
Table 34. LA_STATUS_REG register
ZYXOR
ZOR
YOR
XOR
ZYXDA
ZDA
YDA
XDA
Table 35.
ZYXOR
ZOR
YOR
LA_STATUS_REG description
X, Y and Z axis data overrun. Default value: 0
(0: no overrun has occurred;
1: new data has overwritten the previous one before it was read)
Z axis data overrun. Default value: 0
(0: no overrun has occurred;
1: new data for the Z-axis has overwritten the previous one)
Y axis data overrun. Default value: 0
(0: no overrun has occurred;
1: new data for the Y-axis has overwritten the previous one)
Doc ID 16917 Rev 1
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