AIS3624DQTR STMicroelectronics

AIS3624DQ High-performance motion sensor for automotive applications: ultra-low-power digital output 3-axis accelerometer Datasheet - production data Description The AIS3624DQ is an ultra-low-power high- performance three-axis accelerometer with a 2 digital serial interface SPI standard output, an I C compatible interface is also available. QFN 24 (4x4x1.8 mm3) The device features ultra-low-power operational modes that allow advanced power saving and smart sleep-to-wake functions. Features The AIS3624DQ has dynamically user selectable Wide supply voltage range: 2.4 V to 3.6 V full scales of 6g/12g/24g and it is capable of 1.8 V low voltage compatible IOs measuring accelerations with output data rates Ultra-low-power mode consumption from 0.5 Hz to 1 kHz. down to 10 A The self-test capability allows the user to check 6g/12g/24g dynamically selectable full the functioning of the sensor in the final scale application. 2 SPI/I C digital output interface The device may be configured to generate an 16-bit data output, 12-bit resolution interrupt signal by inertial wakeup/free-fall events as well as by the position of the device itself. 2 independent programmable interrupt Thresholds and timing of interrupt generators are generators programmable by the end user on the fly. System sleep-to-wake function The AIS3624DQ is available in small, quad flat Embedded self-test no-lead package (QFN) with the reduced 4x4 mm Extended temperature range -40C to 105C footprint required by many applications and it is guaranteed to operate over an extended 10000 g high shock survivability temperature range from -40 C to +105 C. ECOPACK , RoHS and Green compliant (see Section 8) This product may be used in a variety of automotive non-safety applications such as: AEC-Q100 qualification Motion-activated functions Telematic boxes Impact recognition and logging systems Vibration monitoring and compensation Table 1. Device summary Order codes Temperature range C Package Packaging AIS3624DQ -40 to +105 QFN 4x4x1.8 24L Tray AIS3624DQTR -40 to +105 QFN 4x4x1.8 24L Tape and reel December 2015 DocID027117 Rev 2 1/41 This is information on a product in full production. www.st.comContents AIS3624DQ Contents 1 Block diagram and pin description . 8 1.1 Block diagram . 8 1.2 Pin description 8 2 Mechanical and electrical specifications . 10 2.1 Mechanical characteristics 10 2.2 Electrical characteristics 11 2.3 Communication interface characteristics . 12 2.3.1 SPI - serial peripheral interface . 12 2 2.3.2 I C - inter-IC control interface 13 2.4 Absolute maximum ratings 14 2.5 Terminology . 15 2.5.1 Sensitivity 15 2.5.2 Zero-g level 15 2.5.3 Self-test . 15 2.5.4 Sleep-to-wake 15 3 Functionality 16 3.1 Sensing element 16 3.2 IC interface 16 3.3 Factory calibration 16 4 Application hints . 17 4.1 Soldering information 17 5 Digital interfaces . 18 5.1 I2C serial interface 18 5.1.1 I2C operation . 19 5.2 SPI bus interface . 20 5.2.1 SPI read . 21 5.2.2 SPI write 22 5.2.3 SPI read in 3-wire mode 23 2/41 DocID027117 Rev 2