Data Sheet

DocID027112 Rev 4 19/50
LPS25HB FIFO
50
4.4 Stream-to-FIFO mode
In Stream-to-FIFO mode (F_MODE[2:0] in FIFO_CTRL (2Eh) set to '011'), the data from
PRESS_OUT_H (2Ah), PRESS_OUT_L (29h) PRESS_OUT_L (29h) and PRESS_OUT_XL
(28h) are stored in the FIFO.
An interrupt can be enabled (STOP_ON_FTH bit set to '1' in CTRL_REG2 (21h)) in order to
be raised when the FIFO is filled to the level specified by the WTM_POINT[4:0] bits of
FIFO_CTRL (2Eh).The FIFO continues filling until it's full (32 slots of data for pressure
output). When full, the FIFO discards the older data as the new arrive. Once a trigger event
occurs, the FIFO starts operating in FIFO mode. A trigger event can be configured in
INTERRUPT_CFG (24h).
The LIR bit in INTERRUPT_CFG (24h) should be set to '1' in order to have latched interrupt
for triggering and reading the data in FIFO mode.
Figure 9. Stream-to-FIFO mode