MMA8452QT数据手册恩XP中文资料规格书

描述 Description

The NXP® MMA8452Q is a low-power, three-axis capacitive micromachined accelerometer with 12 bits of resolution, featuring:
Embedded functions with flexible user-programmable options, configurable to two interrupt pins
Embedded interrupt functions for overall power savings relieving the host processor from continuously polling data
User-selectable full scales of ±2g/±4g/±8g with high-pass filtered data as well as non-filtered data available real-time
Inertial wake-up 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

特性 Features

• 1.95 to 3.6-volt supply voltage
• 1.6 to 3.6-volt interface voltage
• ±2g/±4g/±8g dynamically selectable full-scale
• Output data rates (ODR) from 1.56 Hz to 800 Hz
• 99 μg/√Hz noise
• 12-bit and 8-bit digital output
• I²C digital output interface (operates to 2.25 MHz with 4.7 kΩ pull-up)
• Two programmable interrupt pins for six interrupt sources
• Three embedded channels of motion detection
• Freefall or motion detection: one channel
• Pulse detection: one channel
• Jolt detection: one channel
• Orientation (portrait/landscape) detection with set hysteresis
• Automatic ODR change for auto-wake and return to sleep
• High pass filter data available real-time
• Self test
• RoHS compliant
• Current consumption: 6 μA–165 μA
• This product is included in NXP’s product longevity program, with assured supply for a minimum of 10 years after launch

应用 Application

• eCompass applications
• Static orientation detection (portrait/landscape, up/down, left/right, back/front position identification)
• Notebook, eReader and laptop tumble and freefall detection
• Real-time orientation detection (virtual reality and gaming 3-D 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, tap detection for button replacement