DocID030220 Rev 3

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LIS3DHH

Register description

29

7.9

OUT_X (28h - 29h)

Linear acceleration sensor X-axis output register. The value is expressed as a 16-bit word in

two’s complement.

7.10

OUT_Y (2Ah - 2Bh)

Linear acceleration sensor Y-axis output register. The value is expressed as a 16-bit word in

two’s complement.

7.11

OUT_Z (2Ch - 2Dh)

Linear acceleration sensor Z-axis output register. The value is expressed as a 16-bit word in

two’s complement.

7.12

FIFO_CTRL (2Eh)

FIFO control register.

Table 26. FIFO_CTRL register

FMODE2

FMODE1

FMODE0

FTH4

FTH3

FTH2

FTH1

FTH0

Table 27. FIFO_CTRL register description

FMODE [2:0]

FIFO mode selection bits. Default value: 000

For further details refer to Table 28.

FTH [4:0]

FIFO threshold level setting. Default value: 0 0000

Table 28. FIFO mode selection

FMODE2

FMODE1

FMODE0

Mode

0

0

0

Bypass mode. FIFO turned off

0

0

1

FIFO mode. Stops collecting data when FIFO is full.

0

1

0

Reserved

0

1

1

Continuous mode until trigger is asserted, then FIFO mode.

1

0

0

Bypass mode until trigger is asserted, then Continuous mode.

1

0

1

Reserved

1

1

0

Continuous mode. If the FIFO is full, the new sample over-

writes the older sample.

1

1

1

Reserved