LPS25HB datasheet(33/40 Pages) STMICROELECTRONICS

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LPS25HB

8.12

STATUS_REG (27h)

Status register

This register is updated every ODR cycle, regardless of the BDU value in CTRL_REG1

(20h).

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

PRESS_OUT_H (2Ah) register is read.

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

the TEMP_OUT_H (2Ch) 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 when the PRESS_OUT_H (2Ah)

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 when the TEMP_OUT_H (2Ch)

8.13

PRESS_OUT_XL (28h)

Pressure output value (LSB)

The pressure output value is a 24-bit data that contains the measured pressure. It is

composed of PRESS_OUT_H (2Ah), PRESS_OUT_L (29h) and PRESS_OUT_XL (28h).

The value is expressed as 2’s complement.

RES

P_OR

T_OR

RES

P_DA

T_DA

P_OR

Pressure data overrun.

(0: no overrun has occurred;

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

T_OR

Temperature data overrun.

(0: no overrun has occurred;

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

P_DA

Pressure data available.

(0: new data for pressure is not yet available;

1: new data for pressure is available)

T_DA

Temperature data available.

(0: new data for temperature is not yet available;

1: new data for temperature is available)

POUT7

POUT6

POUT5

POUT4

POUT3

POUT2

POUT1

POUT0

POUT[7:0]

This register contains the low part of the pressure output value.

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