Document Number: MMA8452Q NXP Semiconductors Rev. 10, 04/2016 Data sheet: Technical data MMA8452Q, 3-axis, 12-bit/8-bit MMA8452Q digital accelerometer The MMA8452Q is a smart, low-power, three-axis, capacitive, micromachined accelerometer with 12 bits of resolution. This accelerometer is packed with embedded functions with flexible user programmable options, configurable to two Top and bottom view interrupt pins. Embedded interrupt functions allow for overall power savings relieving the host processor from continuously polling data. The MMA8452Q has user selectable full scales of 2 g/4 g/8 g with high-pass filtered data as well as non-filtered data available real-time. The device can be configured to generate inertial wakeup interrupt signals from any combination of the configurable embedded functions allowing the MMA8452Q to monitor events and remain in a low-power mode during periods of inactivity. The MMA8452Q is available in a 16-pin QFN, 3 mm x 3 mm x 1 mm package. Features 16-pin QFN 1.95 V to 3.6 V supply voltage 3 mm x 3 mm x 1 mm 1.6 V to 3.6 V interface voltage 2 g/4 g/8 g dynamically selectable full-scale Output data rates (ODR) from 1.56 Hz to 800 Hz Top view 99 g/Hz noise 12-bit and 8-bit digital output 2 I C digital output interface 16 15 14 Two programmable interrupt pins for six interrupt sources NC VDDIO 1 13 Three embedded channels of motion detection GND BYP 2 12 Freefall or motion detection: one channel Pulse detection: one channel DNC 3 11 INT1 Transient detection: one channel Orientation (portrait/landscape) detection with set hysteresis SCL 4 GND 10 Automatic ODR change for auto-wake and return to sleep 59 INT2 GND High-pass filter data available real-time 6 7 8 Self-test Current consumption: 6 A to 165 A Typical applications Pin connections E-compass applications Static orientation detection (portrait/landscape, up/down, left/right, back/front position identification) Notebook, e-reader, and laptop tumble and freefall detection Real-time orientation detection (virtual reality and gaming 3D user position feedback) Real-time activity analysis (pedometer step counting, freefall drop detection for HDD, dead-reckoning GPS backup) Motion detection for portable product power saving (auto-sleep and auto-wake for cell phone, PDA, GPS, gaming) Shock and vibration monitoring (mechatronic compensation, shipping and warranty usage logging) User interface (menu scrolling by orientation change, pulse detection for button replacement) Ordering information Part number Temperature range Package description Shipping MMA8452QT 40C to +85C QFN-16 Tray MMA8452QR1 40C to +85C QFN-16 Tape and Reel 2016 NXP B.V. SDA NC SA0 NC NC VDDContents 1 Block Diagram and Pin Description . 3 2 Mechanical and Electrical Specifications . 6 2.1 Mechanical characteristics . 6 2.2 Electrical characteristics . 7 2 2.3 I C interface characteristics 8 2.4 Absolute maximum ratings . 9 3 Terminology . 10 3.1 Sensitivity . 10 3.2 Zero-g offset . 10 3.3 Self-test . 10 4 System Modes (SYSMOD) 11 5 Functionality . 12 5.1 Device calibration . 13 5.2 8-bit or 12-bit data . 13 5.3 Low-power modes vs. high-resolution modes 13 5.4 Auto-wake/sleep mode . 13 5.5 Freefall and motion detection 13 5.6 Transient detection 14 5.7 Pulse detection . 14 5.8 Orientation detection . 14 5.9 Interrupt register configurations 16 2 5.10 Serial I C interface 16 6 Register Descriptions 19 6.1 Data registers 20 6.2 Portrait/landscape embedded function registers 25 6.3 Motion and freefall embedded function registers . 27 6.4 Transient (HPF) acceleration detection 32 6.5 Single, double and directional pulse-detection registers 34 6.6 Auto-wake/sleep detection 39 6.7 Control registers 40 6.8 User offset correction registers . 43 7 Printed Circuit Board Layout and Device Mounting . 47 7.1 Printed circuit board layout 47 7.2 Overview of soldering considerations 48 7.3 Halogen content 48 8 Package Information . 49 8.1 Tape and reel information . 49 8.2 Package description . 50 9 Revision History 53 Related documentation The MMA8452Q device features and operations are described in a variety of reference manuals, user guides, and application notes. To find the most-current versions of these documents: 1. Go to the NXP homepage at: