AIS2DW12 datasheet(23/60 Pages) STMICROELECTRONICS

Part #	AIS2DW12

Description	MEMS digital output motion sensor: ultra-low-power 3-axis accelerometer for automotive applications

PDF	60 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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23 / 60 page

DocID031240 Rev 4

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AIS2DW12

Application hints

Figure 6. AIS2DW12 electrical connections (top view)

The device core is supplied through the Vdd line while the I/O pads are supplied through the

Vdd_IO line. Power supply decoupling capacitors (100 nF ceramic, 10 μF aluminum) should

be placed as near as possible to pin 9 of the device (common design practice).

All the voltage and ground supplies must be present at the same time to have proper

behavior of the IC (refer to Figure 6). It is possible to remove Vdd while maintaining Vdd_IO

without blocking the communication bus, in this condition the measurement chain is

powered off.

The functionality of the device and the measured acceleration data are selectable and

accessible through the I2C or SPI interfaces. When using the I2C, CS must be tied high (i.e.

connected to Vdd_IO).

The functions, the threshold and the timing of the two interrupt pins (INT1 and INT2) can be

completely programmed by the user through the I2C/SPI interface.

AIS2DW12 Datasheet(PDF) 23 Page - STMicroelectronics