LPS27HHW datasheet(21/60 Pages) STMICROELECTRONICS

部件名	LPS27HHW

功能描述	MEMS pressure sensor: 260-1260 hPa absolute digital output barometer with water-resistant package

PDF	60 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

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21 / 60 page

DocID032730 Rev 1

21/60

LPS27HHW

FIFO

5.3

Continuous (Dynamic-Stream) mode

In Continuous (Dynamic-Stream) mode (FIFO_CTRL (13h)(TRIG_MODES and

F_MODE[1:0] = ‘011’) 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 read.

In Continuous (Dynamic-Stream) mode FIFO_STATUS1 (25h)(FSS[7:0]) is the number of

new pressure and temperature samples available in the FIFO buffer.

Continuous (Dynamic-Stream) is intended to be used to read FIFO_STATUS1

(25h)(FSS[7:0]) samples when it is not possible to guarantee reading data within 1/ODR

time period.

Also, a FIFO threshold interrupt on the INT_DRDY pad through CTRL_REG3

(12h)(INT_F_WTM) can be enabled in order to read data from the FIFO and leave free

memory slots for incoming data.

Figure 11. Continuous (Dynamic-Stream) mode

LPS27HHW 数据表(PDF) 21 Page - STMicroelectronics