LPS331AP datasheet(26/36 Pages) STMICROELECTRONICS

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LPS331AP

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Doc ID 022112 Rev 7

THS_P_H

Threshold pressure (MSB)

Address:

26h

Type:

R/W

Reset:

00h

Description:

This register contains the high part of the threshold value for pressure interrupt

generation.

The complete threshold value is given by THS_P_H & THS_P_L and is expressed as

unsigned number. P_ths(mbar)=(THS_P_H & THS_P_L)[dec]/16.

STATUS_REG

Status register

Address:

27h

Type:

Reset:

00h

Description:

The content of this register is updated every ODR cycle, regardless of BDU value in

CTRL_REG1.

P_DA is set to 1 whenever a new pressure sample is available. P_DA is cleared

anytime PRESS_OUT_H (29h) register is read.

T_DA is set to 1 whenever a new temperature sample is available. T_DA is cleared

anytime TEMP_OUT_H (2Bh) register is read.

P_OR bit is set to '1' whenever new pressure data is available and P_DA was set in

the previous ODR cycle and not cleared. P_OR is cleared anytime PRESS_OUT_H

(29h) register is read.

T_OR is set to ‘1’ whenever new temperature data is available and T_DA was set in

the previous ODR cycle and not cleared. T_OR is cleared anytime TEMP_OUT_H

(2Bh) register is read.

THS15

THS14

THS13

THS12

THS11

THS10

THS9

THS8

[15:8] THS7 - THS0: Threshold pressure MSB. Default value: 00h.

543

210

P_OR

T_OR

P_DA

T_DA

[7:6] 0

[5] P_OR: Pressure data overrun. Default value: 0

(0: no overrun has occurred;

1: new data for pressure has overwritten the previous one)

[4] T_OR: Temperature data overrun. Default value: 0

(0: no overrun has occurred;

1: a new data for temperature has overwritten the previous one)

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