LIS331DLHTR datasheet(30/38 Pages) STMICROELECTRONICS

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LIS331DLH

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Doc ID 15094 Rev 3

7.7

HP_FILTER_RESET (25h)

Dummy register. Reading at this address zeroes instantaneously the content of the internal

high pass-filter. If the high pass filter is enabled all three axes are instantaneously set to 0

This allows to overcome the settling time of the high pass filter.

7.8

REFERENCE (26h)

This register sets the acceleration value taken as a reference for the high-pass filter output.

When filter is turned on (at least one of 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.

7.9

STATUS_REG (27h)

Table 33.

REFERENCE register

Ref7

Ref6

Ref5

Ref4

Ref3

Ref2

Ref1

Ref0

Table 34.

REFERENCE description

Ref7 - Ref0

Reference value for high-pass filter. Default value: 00h.

Table 35.

STATUS_REG register

ZYXOR

ZOR

YOR

XOR

ZYXDA

ZDA

YDA

XDA

Table 36.

STATUS_REG description

ZYXOR

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)

ZOR

Z axis data overrun. Default value: 0

(0: no overrun has occurred;

1: a new data for the Z-axis has overwritten the previous one)

YOR

Y axis data overrun. Default value: 0

(0: no overrun has occurred;

1: a new data for the Y-axis has overwritten the previous one)

XOR

X axis data overrun. Default value: 0

(0: no overrun has occurred;

1: a new data for the X-axis has overwritten the previous one)

ZYXDA

X, Y and Z axis new data available. Default value: 0

(0: a new set of data is not yet available; 1: a new set of data is available)

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