LPS35HW datasheet(2/48 Pages) STMICROELECTRONICS

2 / 48 page

Contents

LPS35HW

2/48

DocID029129 Rev 1

Contents

Block diagram and pin description ................................................ 6

Mechanical and electrical specifications....................................... 8

2.1

Mechanical characteristics ................................................................ 8

2.2

Electrical characteristics.................................................................... 9

2.3

Communication interface characteristics........................................... 9

2.3.1

SPI serial peripheral interface ............................................................ 9

2.3.2

I2C inter - IC control interface .......................................................... 10

2.4

Absolute maximum ratings .............................................................. 12

Functionality .................................................................................. 13

3.1

Sensing element ............................................................................. 13

3.2

IC interface...................................................................................... 13

3.3

Factory calibration........................................................................... 13

3.4

How to interpret pressure readings ................................................. 13

FIFO ................................................................................................ 15

4.1

Bypass mode .................................................................................. 15

4.2

FIFO mode ...................................................................................... 16

4.3

Stream mode................................................................................... 16

4.4

Dynamic-Stream mode ................................................................... 17

4.5

Stream-to-FIFO mode ..................................................................... 18

4.6

Bypass-to-Stream mode ................................................................. 19

4.7

Bypass-to-FIFO mode..................................................................... 20

4.8

Retrieving data from FIFO............................................................... 20

Application hints ........................................................................... 21

5.1

Soldering information ...................................................................... 22

Digital interfaces ........................................................................... 23

6.1

IC serial interface ............................................................................ 23

6.2

I2C serial interface .......................................................................... 23

6.3

I2C operation................................................................................... 24

6.4

SPI bus interface............................................................................. 25

6.5

SPI read .......................................................................................... 26

6.6

SPI write.......................................................................................... 27

6.7

SPI read in 3-wire mode.................................................................. 28

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