LPS35HW Datasheet, PDF (17/48 Pages) STMicroelectronics – Embedded temperature compensation

LPS35HW
Figure 8: Stream mode
FIFO
In the latter case reading all FIFO content before an overrun interrupt has occurred, the first
data read is equal to the last already read in the previous burst, so the number of new data
available in FIFO depends on the previous reading.
4.4
Dynamic-Stream mode
In Dynamic-Stream mode (FIFO_CTRL(FMODE2:0) = 110) after emptying the FIFO, the
first new sample that arrives becomes the first to be read in a subsequent read burst. In
this way the number of new data available in FIFO does not depend on the previous
reading.
In Dynamic-Stream mode FIFO_STATUS(FSS5:0) is the number of new pressure and
temperature samples available in the FIFO buffer.
Stream Mode is intended to be used reading all 32 samples of FIFO within an ODR after
receiving an overrun signal.
Dynamic-Stream is intended to be used to read FIFO_STATUS(FSS5:0) samples when it is
not possible to guarantee reading data within an ODR.
Also, a FIFO threshold interrupt on the INT_DRDY pad through CTRL3(F_FTH) can be
enabled in order to read data from the FIFO and leave free memory slots for incoming data.
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