ISM330BX datasheet(149/150 Pages) STMICROELECTRONICS

149 / 150 page

List of figures

Figure 1.

Generic state machine............................................................... 5

Figure 2.

State machine in the ISM330BX ........................................................ 5

Figure 3.

Machine learning core in the ISM330BX................................................... 6

Figure 4.

Four-stage pedometer algorithm ........................................................ 8

Figure 5.

Pin connections ................................................................... 9

Figure 6.

ISM330BX connection modes......................................................... 10

Figure 7.

SPI target timing in mode 0 .......................................................... 17

Figure 8.

SPI target timing in mode 3 .......................................................... 18

Figure 9.

I²C target timing diagram ............................................................ 19

Figure 10.

TDM timing diagram ............................................................... 20

Figure 11.

Read and write protocol (in mode 3) .................................................... 26

Figure 12.

SPI read protocol (in mode 3) ......................................................... 27

Figure 13.

Multiple byte SPI read protocol (2-byte example) (in mode 3) ................................... 27

Figure 14.

SPI write protocol (in mode 3)......................................................... 28

Figure 15.

Multiple byte SPI write protocol (2-byte example) (in mode 3) ................................... 28

Figure 16.

SPI read protocol in 3-wire mode (in mode 3) .............................................. 28

Figure 17.

WCLK, TDMout change on the falling edge of BCLK and are valid on the rising edge of BCLK, no delay ..... 33

Figure 18.

WCLK, TDMout change on the rising edge of BCLK and are valid on the falling edge of BCLK, no delay ..... 33

Figure 19.

WCLK, TDMout change on the falling edge of BCLK and are valid on the rising edge of BCLK, delayed...... 34

Figure 20.

WCLK, TDMout change on the rising edge of BCLK and are valid on the falling edge of BCLK, delayed...... 34

Figure 21.

Single-channel mode (XL_DualC_EN = 0) ................................................ 36

Figure 22.

Dual-channel mode (XL_DualC_EN = 1) ................................................. 36

Figure 23.

Block diagram of filters ............................................................. 38

Figure 24.

Accelerometer UI chain ............................................................. 39

Figure 25.

Accelerometer composite filter ........................................................ 39

Figure 26.

Frequency response ............................................................... 40

Figure 27.

Gyroscope digital chain - mode 1 (UI) and mode 2 .......................................... 41

Figure 28.

ISM330BX electrical connections in mode 1 ............................................... 45

Figure 29.

ISM330BX electrical connections in mode 2 ............................................... 46

Figure 30.

Qvar external connections to pin 6, 9 (Qvar input) ........................................... 47

Figure 31.

Accelerometer block diagram ......................................................... 68

Figure 32.

LGA-14L 2.5 x 3.0 x 0.74 mm package outline and mechanical data ............................. 133

Figure 33.

Carrier tape information for LGA-14 package ............................................. 134

Figure 34.

LGA-14 package orientation in carrier tape............................................... 134

Figure 35.

Reel information for carrier tape of LGA-14 package ........................................ 135

ISM330BX

List of figures

DS14588 - Rev 2

page 149/150

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