ISM303DAC datasheet(42/80 Pages) STMICROELECTRONICS

42 / 80 page

Application hints

ISM303DAC

42/80

DocID030988 Rev 2

Note:

In order to program INT_MAG/DRDY as a push-pull output, write the INT_MAG bit to 1 in

CFG_REG_C_M (62h).

5.1

Soldering information

The LGA package is compliant with the ECOPACK®, RoHS and “Green” standards.

It is qualified for soldering heat resistance according to JEDEC J-STD-020.

Land pattern and soldering recommendations are available at www.st.com.

5.2

High-current wiring effects

High current in wiring and printed circuit traces can be culprits in causing errors in magnetic

field measurements for compassing.

Conductor-generated magnetic fields will add to the Earth’s magnetic field, leading to errors

in compass heading computation.

Keep currents higher than 10 mA a few millimeters away from the sensor IC.

Table 19. Pin status

Pin#

Name

Function

Status

SCL

SPC

I2C serial clock (SCL)

SPI serial port clock (SPC)

Default: input without pull-up

2CS

I2C/SPI mode selection

(1: SPI idle mode / I2C communication enabled;

0: SPI communication mode / I2C disabled)

Default: input without pull-up

Reserved

Reserved, connected to GND

SDA

SDI

SDO

I2C serial data (SDA)

SPI serial data input (SDI)

3-wire interface serial data output (SDO)

Default: (SDA) input without pull-up

Capacitor connection (C1 = 220 nF)

External cap, voltage forced by the

device

GND

0 V

INT_MAG/DRDY Magnetometer interrupt/data-ready signal

Default: output high impedance

GND

0 V

Vdd

Power supply

Vdd_IO

Power supply for I/O pins

INT2_XL

Accelerometer interrupt 2

Default: output forced to ground

INT1_XL

Accelerometer interrupt 1

Default: output forced to ground

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