LPS33HW datasheet(22/50 Pages) STMICROELECTRONICS

Part #	LPS33HW

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

PDF	50 Pages

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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22 / 50 page

FIFO

LPS33HW

22/50

DocID030522 Rev 1

4.7

Bypass-to-FIFO mode

In Bypass-to-FIFO mode (FIFO_CTRL (14h)(FMODE2:0) = '111'), data measurement

storage inside FIFO operates in FIFO mode when INT_SOURCE (25h)(IA) is equal to '1',

otherwise FIFO content is reset (Bypass mode).

An interrupt generator can be set to the desired configuration through INTERRUPT_CFG

(0Bh).

The INTERRUPT_CFG (0Bh)(LIR) bit should be set to '1' in order to have latched interrupt.

Figure 12. Bypass-to-FIFO mode

4.8

Retrieving data from FIFO

FIFO data is read from PRESS_OUT_H (2Ah), PRESS_OUT_L (29h), PRESS_OUT_XL

(28h) and TEMP_OUT_H (2Ch), TEMP_OUT_L (2Bh).

Each time data is read from the FIFO, the oldest data are placed in the PRESS_OUT_H

(2Ah), PRESS_OUT_L (29h), PRESS_OUT_XL (28h), TEMP_OUT_H (2Ch) and

TEMP_OUT_L (2Bh) registers and both single-read and read-burst operations can be used.

The reading address is automatically updated by the device and it rolls back to 28h when

(5 output registers by 32 levels) must be read.

LPS33HW Datasheet(PDF) 22 Page - STMicroelectronics