LPS22HB datasheet(20/49 Pages) STMICROELECTRONICS

Part #	LPS22HB

Description	MEMS nano pressure sensor: 260-1260 hPa absolute digital output barometer

PDF	49 Pages

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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20 / 49 page

FIFO

LPS22HB

20/49

DocID027083 Rev 5

5.4

Dynamic-Stream mode

In Dynamic-Stream mode (FIFO_CTRL (14h)(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 (26h)(FSS5:0) is the number of new pressure and

temperature samples available in the FIFO buffer.

Stream Mode is intended to be used to read all 32 samples of FIFO within an ODR after

receiving an overrun signal.

Dynamic-Stream is intended to be used to read FIFO_STATUS (26h)(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 throughCTRL_REG3 (12h)(F_FTH)

can be enabled in order to read data from the FIFO and leave free memory slots for

incoming data.

Figure 10. Dynamic-Stream mode

LPS22HB Datasheet(PDF) 20 Page - STMicroelectronics