LPS22DF datasheet(18/54 Pages) STMICROELECTRONICS

部件名	LPS22DF

功能描述	Low-power and high-precision MEMS nano pressure sensor: 260-1260 hPa absolute digital output barometer

PDF	54 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

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18 / 54 page

5.6

Continuous (Dynamic-Stream)-to-FIFO mode

In Continuous (Dynamic-Stream)-to-FIFO mode (FIFO_CTRL (14h)(TRIG_MODES and F_MODE[1:0] = ‘111’),

data are stored in FIFO and FIFO operates in Continuous (Dynamic-Stream) mode behavior until it switches to

FIFO mode behavior when INT_SOURCE (24h)(IA) rises to '1'.

An interrupt generator has to be set to the desired configuration through INTERRUPT_CFG (0Bh).

Figure 13. Continuous (Dynamic-Stream)-to-FIFO mode

P127

Dynamic-Stream Mode

FIFO Mode

Trigger event

P126

5.7

Retrieving data from FIFO

FIFO data is read through FIFO_DATA_OUT_PRESS (78h, 79h and 7Ah).

The read address is automatically updated by the device and it rolls back to 78h when register 7Ah is reached. In

order to read all FIFO levels in a multiple byte read, 384 bytes (3 output registers with 128 levels) must be read.

LPS22DF

Continuous (Dynamic-Stream)-to-FIFO mode

DS13316 - Rev 1

page 18/54

LPS22DF 数据表(PDF) 18 Page - STMicroelectronics