The MMA7450L is a Digital Output (I2C/SPI), low power, low profile capacitive micromachined accelerometer featuring signal conditioning, a low pass filter, temperature compensation, self test, configurable to detect 0g through interrupt pins (INT1 or INT2), and pulse (click) detect for quick motion detection. The 0g offset can be customer calibrated using assigned 0g registers and g-Select which allows for command selection for 3 sensitivities (2g/4g/8g). Zero-g offset and sensitivity are factory set and require no external devices. The MMA7450L includes a Standby Mode that makes it ideal for handheld battery powered electronics.

特性 Features

? Digital Output (I2C/SPI) - 10-Bit at 8g Mode

? 3mm x 5mm x 0.8mm LGA-14 Package

? Low Current Consumption: 400 μA

? Sleep Mode: 5 μA

? Low Voltage Operation: 2.4 V – 3.6 V

? Customer Assigned Registers for Offset Calibration

? Programmable Threshold Interrupt Output

? Level/Pulse Detection for Motion Recognition (Shock, Vibration, Freefall)

? Click Detection for Single or Double Click Recognition

? High Sensitivity (64 LSB/g @ 2g and @ 8g in 10-Bit Mode)

? Selectable Sensitivity (±2g, ±4g, ±8g)

? Self Test for X-Axis

? Robust Design, High Shocks Survivability (10,000 g)

? RoHS Compliant

? Environmentally Preferred Product

? Low Cost

Typical Applications

? Cell Phone/PMP/PDA: Image Stability, Text Scroll, Motion Dialing, E-Compass, Tap to Mute

? HDD: Freefall Detection

? Laptop PC: Freefall Detection, Anti-Theft

? Navigation and Dead Reckoning: Position Detection, Pedometer

? E-Compass Tilt Compensation

? 3D Gaming: Tilt and Motion Sensing, Event Recorder