LPS25H datasheet(25/45 Pages) STMICROELECTRONICS

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LPS25H

7.6

CTRL_REG1

Control register 1

Address:

20h (R/W)

Reset:

00h

Description:

Control register.

PD bit allows to turn on the device. The device is in power-down mode when PD = ‘0’

(default value after boot). The device is active when PD is set to ‘1’.

ODR2- ODR1 - ODR0 bits allow to change the output data rates of pressure and

temperature samples. The default value is “000” which corresponds to “one shot

configuration” for both pressure and temperature output. ODR2, ODR1 and ODR0 bits can

be configured as described in Table 18.

543

210

ODR2

ODR1

ODR0

DIFF_EN

BDU

RESET_AZ

SIM

[7] PD: power down control.

Default value: 0

(0: power-down mode; 1: active mode)

[6:4] ODR2, ODR1, ODR0: output data rate selection.

Default value: 00

(see Table 18)

[3] DIFF_EN: Interrupt circuit enable.

Default value: 0

(0: interrupt generation disabled; 1: interrupt circuit enabled)

[2] BDU: block data update.

Default value: 0

(0: continuous update; 1: output registers not updated until MSB and LSB reading)

[1] RESET_AZ: Reset AutoZero function. Reset REF_P reg, set pressure to default value in RPDS

(1: Reset. 0: disable)

[0] SIM: SPI Serial Interface Mode selection.

Default value: 0

(0: 4-wire interface; 1: 3-wire interface)

Table 18. Output data rate bit configurations

ODR2

ODR1

ODR0

Pressure (Hz)

Temperature (Hz)

One shot

001

1 Hz

010

7 Hz

12.5 Hz

25 Hz

101

Reserved

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