This part is a kind of semiconductor called AIS326DQ.

Function of this product has MEMS inertial sensor.

Manufacturers : STMicroelectronics

Image and pinout :

Some of the text within the PDF file :

AIS326DQ MEMS inertial sensor 3-axis, low g accelerometer with digital output Data Brief Features ■ 3.3 V single supply operation ■ 1.8 V compatible IOs ■ SPI digital output interface(a) ■ 12 bit resolution ■ Interrupt activated by motion ■ Programmable interrupt threshold ■ Embedded self-test ■ High shock survivability ■ ECOPACK® compliant (see Section 9) ■ Extended temperature range -40 °C to +105 °C Description The AIS326DQ is a three axes digital output accelerometer that includes a sensing element and an IC interface able to take the information from the sensing element and to provide the measured acceleration signals to the external world through an SPI serial interface. The sensing element, capable of detecting the acceleration, is manufactured using a dedica [ ... ]

AIS326DQ PDF Datasheet Download