LPS35HW datasheet(40/48 Pages) STMICROELECTRONICS

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LPS35HW

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FTH

OVRN

FSS5

FSS4

FSS3

FSS2

FSS1

FSS0

Description

At least one sample have been

overwritten

Notes:

(1)When the number of unread samples in FIFO is greater than the threshold level set in register Section 10.8:

"FIFO_CTRL (14h)", FTH value is ‘1’.

8.17

STATUS_27h

Status register

Table 34: STATUS (27h) register

T_OR

P_OR

T_DA

P_DA

T_OR

Temperature data overrun.

(0: no overrun has occurred;

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

P_OR

Pressure data overrun.

(0: no overrun has occurred;

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

T_DA

Temperature data available.

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

1: new data for temperature is available)

P_DA

Pressure data available.

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

1: new data for pressure is available)

This register is updated every ODR cycle.

8.18

PRESS_OUT_XL_28h

Pressure output value (LSB)

Table 35: PRESS_OUT_XL (28h) register

POUT7

POUT6

POUT5

POUT4

POUT3

POUT2

POUT1

POUT0

POUT[7:0]

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

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

composed of Section 10.20: "PRESS_OUT_H_2Ah", Section 10.19: "PRESS_OUT_L_29h"

and Section 10.18: "PRESS_OUT_XL_28h"

. The value is expressed as 2’s complement.

The output pressure register PRESS_OUT is provided as the difference between the

measured pressure and the content of the register RPDS (18h, 19h)*.

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