LPS27HHTW datasheet(42/55 Pages) STMICROELECTRONICS

42 / 55 page

9.15

INT_SOURCE (24h)

Interrupt source (read only)

BOOT_ON

Indication of Boot phase.

(0: Boot phase has ended;

1: Boot phase is running).

Interrupt active.

(0: no interrupt has been generated;

1: one or more interrupt events have been generated).

Differential pressure Low.

(0: no interrupt has been generated;

1: low differential pressure event has occurred).

Differential pressure High.

(0: no interrupt has been generated;

1: high differential pressure event has occurred).

9.16

FIFO_STATUS1 (25h)

FIFO status register (read only)

FSS7

FSS6

FSS5

FSS4

FSS3

FSS2

FSS1

FSS0

FSS[7:0]

FIFO stored data level, number of unread samples stored in FIFO.

(00000000: FIFO empty; 10000000: FIFO full, 128 unread samples)

9.17

FIFO_STATUS2 (26h)

FIFO status register (read only)

FIFO_WTM_IA

FIFO_OVR_IA

FIFO_FULL_IA

FIFO_WTM_IA

FIFO threshold (watermark) status. Default value: 0

(0: FIFO filling is lower than treshold level;

1: FIFO filling is equal or higher than treshold level).

FIFO_OVR_IA

FIFO overrun status. Default value: 0

(0: FIFO is not completely full;

1: FIFO is full and at least one sample in the FIFO has been overwritten).

FIFO_FULL_IA

FIFO full status. Default value: 0

(0: FIFO is not completely filled;

1: FIFO is completely filled, no samples overwritten)

LPS27HHTW

INT_SOURCE (24h)

DS13489 - Rev 1

page 42/55

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