LIS331DL(2007) View Datasheet(PDF) - STMicroelectronics

Part Name

Description

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LIS331DL
(Rev.:2007)

MEMS motion sensor 3-axis - ±2g/±8g smart digital output “nano” accelerometer

STMicroelectronics 

LIS331DL

Register description

HP_coeff[2:1]. These bits are used to configure high-pass filter cut-off frequency ft.

Table 15. High pass filter cut-off frequency configuration

HPcoeff2,1

ft (Hz)

(ODR=100 Hz)

00

2

01

1

10

0.5

11

0.25

ft (Hz)

(ODR=400 Hz)

8

4

2

1

7.4

CTRL_REG3 [interrupt CTRL register] (22h)

Table 16. CTRL_REG3 register

IHL

PP_OD I2CFG2 I2CFG1

I2CFG0

I1CFG2

I1CFG1

I1CFG0

Table 17.

IHL

PP_OD

I2CFG2

I2CFG1

I2CFG0

I1CFG2

I1CFG1

I1CFG0

CTRL_REG3 description

Interrupt active high, low. Default value 0.

(0: active high; 1: active low)

Push-pull/Open Drain selection on interrupt pad. Default value 0.

(0: push-pull; 1: open drain)

Data Signal on Int2 pad control bits. Default value 000.

(see table below)

Data Signal on Int1 pad control bits. Default value 000.

(see table below)

Table 18. Data Signal on Int1 pad control bits

I1(2)_CFG2

I1(2)_CFG1

I1(2)_CFG0

0

0

0

0

0

1

0

1

0

0

1

1

1

0

0

1

1

1

Int1(2) Pad

GND

FF_WU_1

FF_WU_2

FF_WU_1 or FF_WU_2

Data ready

Click interrupt

7.5

HP_FILTER_RESET (23h)

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 0g.

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

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