ILPS22QS datasheet(21/57 Pages) STMICROELECTRONICS

部件名	ILPS22QS

功能描述	Dual full-scale, 1260 hPa and 4060 hPa, absolute digital output barometer with embedded Qvar electrostatic sensor

PDF	57 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

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21 / 57 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 7Ch 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.

ILPS22QS

Continuous (dynamic-stream)-to-FIFO mode

DS13431 - Rev 3

page 21/57

ILPS22QS 数据表(PDF) 21 Page - STMicroelectronics