1

Schematic diagram

EN

3

I/O_Vcc4

5

GND

1V8

100nF

C4

GND

3V3

1V8

GND

LDK130M-R

U2

6

I/O_VL5

SB27

10

CN5

Mag

U3

SB51

DNM

SB17

DNM

I2C ADDw = D4h

JP8

100nF

C16

1

2

3

4

JP7

M_INT_Pin16

M_INT2

CN8

4

I/O_VL3

C14

100nF

1V8 = 1.8V

MIC_DAT_O

GND

6

GND

SB52

M

SDA/SDI/SDO

4

SB46

DNM SPI_MISO

4k7

R17

14

GND

3

2

JP2

I2C2 Vio header

I/O_VL2

18

GND

GND

SB40

I/O_Vcc1

19

ST2378E

U7

SCL

SDA

DNM

SB7

1V8

Vio

Trigger from DRDY MAG in SensorHub Mode

1-2 , 3-4

I/O_Vcc6

7

GND

GND

I/O_VL2

18

M_SA0/DRDY

M_INT_Pin24

1V8

ISM330DHC_INT2

ISM330DHC_INT2_O

ISM330DHC_INT1_O

II2DMC_DRDY

GND

16

1V8

16

I/O_VL4

SB16

DNM

10µF

C6

10

GND

U5

SB30 SB28

VDD_IO

10

SB38

4k7

R11

11

SCL/SPC

1

MIC_DAT

100nF

C80

SPI_MOSI

SB25

17

18

4k7

R1

10µF

C3

14

I/O_VL6

IIS2DLPC_INT2

1V8

CS

2

I/O_Vcc3

17

GND

JP7, JP8 must have the shunts in the same position

I/O_Vcc3

17

I/O_VL8

12

I/O_Vcc7

13

1V8

I2C2_SDA

I2C2_SCL

SB12

SB43 DNM

I/O_Vcc7

1V8

2

I/O_VL1

Vio

C31

GND

8

1V8

GND

10

1V8

MIC_DAT_O

Vio

1V8

21

L/R

2

I/O_Vcc4

5

II2SMDC magnetometer

VDDIO

5

SB29

DNM

SB33

M_INT_Pin17

SPI_MISO

C12

100nF

13

DIL24 Socket

3V3J1

2k2

R8

SB42

GND

Header 19x2

CN7

1

2

3

IIS2DLPC_INT2_O

1V8

Acc_ULP

U1

VL

1

SB4

DNM

4

I/O_VL3

2

I/O_VL1

Vio

JP4

I/O_Vcc6

7

SB36

SB18

1V8

GND

SPI_MOSI_O

SPI_CK_O

NC

2

CN9

I/O_Vcc5

15

M_SA0/DEN

IIS2DLPC_INT

ISM330DHC_INT2

1V8

100nF

C5

9

8

7

6

5

4

3

2

1

Vio

OE

11

JP9

ISM330DHC_INT1_O 13

I2C ADDw = D6hSB15

Vout

5

GND

14

I/O_VL6

Header 19x2

CN10

220nF

C32

SB26

JP12

20

Vcc

SB9

I2C ADDw = 30h

DNM

11

10

SB24

DNM

JP11

C11

100nF

MIC_CK

22

M_SA0/DEN

23

SPI_CS_O

SPI_MOSI

SPI_CK

SB2

JP1

4

5

IIS2DLPC_INT2

1V8

USER_INT routing selector

SDO/SA0

3

IIS2DLPC

ISM330DHCX accelerometer and gyroscope

4k7

R2

I/O_Vcc8

9

SB47

1V8

SPI_MOSI_O

SPI_CK_O

SPI_MISO_O

SPI_CS_O

4k7

R12

I2C ADDw = 3Ch

SB3

Arduino and morpho connectors

OE

11

SB14

DNM

BT_Irq

I/O_Vcc2

3

GND

12k

R6

8

7

6

5

4

3

2

1

INT/DRDY

7

C30

I/O_Vcc8

9

1V8

15k

R7

J2

SDA

SCL

DNM

SB34

I2C1_SDA

DNM

I2C1_SCL

GND

20

JP3

MIC_CK

MIC_DAT

MIC_CK_O

MIC_DAT_O

MIC_CK_O

MIC_DAT_O

MIC_CK_O

Adj

4

Data

4

DN

MIC_DAT_O

12

JP6

Header 6X2

SB31

DNM

I2C ADDw = 32h

SB8

GND

GND

M_INT2_O

M_INT1_O

USER_INT_O

USER_INT

SCL

13

DNM

GND

4k7

R10

7

RES

SB13

20

Vcc

SB6

100nF

C17

GND

SB41

SCx

SDx

Vdd_IO

10

1

CS

3

4k7

R9

SPI_CS

II2DMC_DRDY_O

M_INT1

1V8

R4

4k7

DNM

4k7

DNM

SB22

SB23

DNM

JP5

SB21

DNM

M_INT_Pin17

I/O_Vcc2

3

1V8

IMP34DT05 microphone

CS

12

SB37

DNM

IIS2MDC

VL

1

GND

1

2

3

4

5

6

2.2µF

C18

24

CLK

3

SB32

II2DMC_DRDY

SPI_CK

SPI_MISO_O

15

SB35

SB44

IIS2DLPC_INT2_O

1

2

3

4

5

6

7

8

SDA/SDI/SDO

4

SDA

14

DIL24 Socket for Adapter Board

6

GND

10

SB1

DNM

1

Vin

GND

I2C2_SDA

I2C2_SDA

I2C2_SCL

I2C2_SCL

SDA

SCL

I2C1_SCL

I2C1_SDA

I2C2_SCL

I2C2_SDA

SDx

SCx

SCx

SDx

I²C Mode

standard

ISM330DHC

Sensor HUB

Shunts

SB20

DNM

I/O_Vcc5

15

I/O_Vcc1

ST2378E

ISM330DHC_INT2_O 19

U6

I2C1_SCL

I2C1_SDA

I2C2_SDA

I2C2_SCL

I/O_VL5

6

GND

8

I/O_VL7

SB54

DNM

MIC_CK_O

MIC_CK_O

M_INT2

M_INT1

M_INT2_O

M_INT1_O

USER_INT_O

2-3

I2C1=I2C2 all devices are on same bus (I2Caux = GND)

ISM330DHC (U2) as master of I2C1 = I2Cx

U3,U4,U8,,U9, Adapter are slave of U2

ISM330DHC_INT1

1

2

3

4

Vio

C13

100nF

CN6

19

GND

7

VDD

9

SB39

SPI_CS

1V8

JP10

1

2

3

4

5

6

7

8

9

12

DNM

SB19

SB45

10µF

C15

SB53

DNM

M_INT_Pin24

M_SA0/DRDY

GND

8

U4

8

I/O_VL7

9

GND

GND

SB5

8

GND

SB10

DNM

Vdd

1

Vio

1

SCL

I/O_VL4

16

Vio

7

SB50

DNM

IIS2DLPC_INT2_O

Vdd

9

SB11

GND

I/O_VL8

12

2k2

R3

Description

IIS2DLPC accelerometer

10µF

100nF

DNM

M_INT_Pin16

R5

IIS2DLPC_INT_O

USER_INT